Terminates the program and gives the return value to os as exit code.
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what is the use of Application.Exit() method?
Notifies all message loops to quit, closes windows opened by them and closes program.
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Daily Tips- Tip #44 - How to exit c# applications?
You can exit using the following 2 static methods,
1. Environment.Exit(returnval)
2. Application.Exit()
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Explain What is browser capabilities providers?
Saturday, December 19, 2009
It lets you build a provider that in turn lets you write custom code to determine browser capabilities.
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What is the advantage of Routing?
It makes your site more user-friendly and your site content more discoverable by search engines.
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How will you set the Backward Compatibility feature in asp.net 4.0?
You need make the following change to the web.config ,
<system.web>
<pages controlRenderingCompatibilityVersion="3.0"/>
</system.web>
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What is the expansion of XDT?
XML Document Transform (XDT),is the feature that lets you transform a Web.config file.
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What is Incredible Shrinking Session State in asp.net 4.0?
It a feature which compresses session states in StateServer and SQL Server modes of session storage.
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What is the use of new ClientIDMode property in asp.net 4.0?
It makes client-side script accessing asp.net server controls rendered as html controls.
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What is the PersistedSelection in a gridview newly introduced in asp.net 4.0?
It is a new attribute which makes the selected row in a gridview persistable between navigation between pages in a gridview.
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What are the other UI related enhancements in asp.net 4.0?
1. Better support to Web standards and Accessibility.
2. Better attribute values(boolean) for controls with Disabled attribute.
3. In-line css support for validation controls.
4. CSS for the Hidden Fields Div Element.
5. CSS and UI related to many other controls
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How will you make an application auto-startable in asp.net 4.0?
To use the auto-start feature, an IIS administrator sets an application pool in IIS 7.5 to be automatically started by using the following configuration in the
applicationHost.config file:
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What is auto-start feature in asp.net 4.0?
Thursday, December 17, 2009
It is an feature which can be automatically started by using the configuration in the applicationHost.config file.
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Explain Windows HTTP Services Certificate Configuration Tool (WinHttpCertCfg.exe)?
The Microsoft Windows HTTP Services (WinHTTP) Certificate Configuration Tool, WinHttpCertCfg.exe, enables administrators to install and configure client certificates in any
certificate store that can be accessed by the Internet Server Web Application Manager (IWAM) account.
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Daily Tips- Tip #42 - What is the shortcut key to bring up the Immediate window?
Wednesday, December 16, 2009
What is an HttpCombiner?
An HTTP handler that combines multiple CSS, Javascript or URL into one response for faster page load. It can combine, compress and cache response which results in faster page
load and better scalability of web application.
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What is the best practice for calling explicit garbage collections?
Monday, December 14, 2009
You should call the finalizer after gc like,
//c#
GC.Collect();
GC.WaitForPendingFinalizers();
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Which is the best practice in applying multiple attributes to a same member?
Instead of applying it as comma seperated, apply individually in separate lines,
//c#
[Conditional("TRACE")]
[DebuggerStepThrough]
void MyMethod()
{
}
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Daily Tips- Tip #38 - What is the method in MS Exception Management Application Block which is used to publish exceptions?
Friday, December 11, 2009
Daily Tips- Tip #39 - How will you beging a running a standard application message loop on the current thread?
Is it true that objects don't always get destroyed immediately when the last reference goes away?
Yes. The garbage collector offers no guarantees about the time when an object will be destroyed and its memory reclaimed.
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Daily Tips- Tip #36 - How to view trace details for a specific request?
Thursday, December 10, 2009
To view trace details for a specific request
1.Goto to Trace.axd in the root of your application.
For ex: if the URL for your application is http://localhost/myApplication, Goto http://localhost/myApplication/trace.axd to view the trace information for that application.
2.Select the View Details link for the specific request that you want to investigate.
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How to enable application level Tracing?
<configuration>
<system.web>
<trace enabled="true" pageOutput="false" requestLimit="40" localOnly="false"/>
</system.web>
</configuration>
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How will you protect your ASP.NET application from XSS?
Monday, December 7, 2009
You can prevent your website from xss using:
1. Validate Input received from your site.
2. Encode Output generated from your site.
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Daily Tips- Tip #34 - How will you invoke Immediate window in Visual studio?
1. Open the command window in Visual Studio
2. Type “immed” To Execute statements
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Which is the best practice for explicit event subscriptions: using AddHandler and RemoveHandler or WithEvents?
Daily Tips- Tip #35 - #region blocks
Enclose Methods and Interfaces in #region blocks so that it can be collapsed or expanded.
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What interface do you need to implement for your HttpHandler to support sessions?
It needs to implement IRequiresSessionState or IReadOnlySessionState in order to use session state.
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How will you find which control did the postback?
you can find the control which did postback using "__EVENTTARGET" with few exceptions.
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When do you use windows authentication in ASP.NET 2.0?
Your ASP.NET application should use windows authentication when your users have windows accounts that can be authenticated by a server. The accounts can be local windows accounts or domain accounts.
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How will you enforce strong passwords using membership feature in ASP.NET 2.0?
You can enforce strong passwords using membership by configuring the attributes minRequiredPasswordLength, minRequiredNonAlphanumericCharacters, and passwordStrengthRegularExpression on your membership provider configuration.
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Where will you place your user-interface strings ?
Saturday, December 5, 2009
It is a best practice to place all your user-interface strings in a resource file rather burning them in code.
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Which control of Ajax control toolkit populates matching list upon entering characters in a text box?
What is url rewriting in asp.net?
Monday, November 30, 2009
URL rewriting is the process of intercepting an incoming Web request and automatically redirecting it to a different URL.
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What is purpose of WCAG ?
The Web Content Accessibility Guidelines (WCAG) documents explain how to make Web content accessible to people with disabilities.
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How will you disable personalization in ASP.NET Web Parts?
By using the attribute personalization-enabled as given in the below example,
<asp:webpartmanager runat="server" id="wpm1"
personalization-enabled="false" />
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What is the short cut for collapsing all the open classes and methods in .net?
Saturday, November 28, 2009
What should you do to make Routing handle requests that point to files?
If you want routing to handle all requests, even requests that point to files, you can overwrite the default behavior by setting the RouteExistingFiles property of the RouteCollection object to true. When you set this value to true, all requests that match a defined pattern are handled by routing.
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What is Asp.NET Routing?
ASP.NET routing enables you to use URLs that do not have to map to specific files in a Web site. Because the URL does not have to map to a file, you can use URLs in a Web application that are descriptive of the user's action and therefore more easily understood by users.
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What is the attribute that need to be added for a class to be tested in Unit Testing?
Wednesday, November 4, 2009
What is nAML?
It is .NET Application Modeling Language, pronounced as “namel” is a visual modeling semantics to model .net applications with wide range of specific details. It contains extremely powerful visual notations and semantics to illustrate complex application components, processes and operations easily.
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What is the file used to create a metabse backup of IIS 6.0 programatically?
Friday, October 9, 2009
What are the IIS backup files?
The backup files are the copies of the
1. MetaBase.xml , the metabase configuration file and
2. MSSchema.xml , the matching metabase schema file.
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What is Windows Azure?
Thursday, October 8, 2009
Windows Azure is the cloud services operating system that serves as the development, service hosting, and service management environment for the Windows Azure Platform.
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What Is an Indexer?
An indexer is a set of get and set accessors, similar to those of properties. It gives get and set access to multiple data members of the class.
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What are MMC tools or snap-ins ?
MMC tools (called snap-ins) can be used to administer networks, computers, services,
applications and other system components. MMC does not perform administrative functions, but hosts a variety of Windows and non-Microsoft snap-ins that do.
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What is MMC ?
Microsoft Management Console is a framework that unifies and simplifies day-to-day system management tasks on Windows by providing common navigation, menus, toolbars, and workflow across diverse tools.
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Daily Tips- Tip #33 - How will you detect the name of the browser using ASP.NET ?
You can find that using the following code (which detects whether it is IE)
if(Page.Request.Browser.Browser=="IE")
{
}
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ASP.NET Webpart basic sample
Tuesday, October 6, 2009
<h4>
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:WebPartManager ID="WebPartManager1" runat="server">
</asp:WebPartManager>
<table>
<tr>
<td>
<asp:WebPartZone ID="MainZone" runat="server" HeaderText="My WebPart Zone">
<ZoneTemplate>
<asp:Label ID="Label1" runat="server" Title="Content">
<h2>Welcome to my Webparts world</h2>
</asp:Label>
</ZoneTemplate>
</asp:WebPartZone>
</td>
</tr>
</table>
</form>
</body>
</html>
</h4>
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:WebPartManager ID="WebPartManager1" runat="server">
</asp:WebPartManager>
<table>
<tr>
<td>
<asp:WebPartZone ID="MainZone" runat="server" HeaderText="My WebPart Zone">
<ZoneTemplate>
<asp:Label ID="Label1" runat="server" Title="Content">
<h2>Welcome to my Webparts world</h2>
</asp:Label>
</ZoneTemplate>
</asp:WebPartZone>
</td>
</tr>
</table>
</form>
</body>
</html>
</h4>
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LINQ Basic Sample with arrays
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace LINQSamp1
{
class Program
{
static void Main()
{
int[] ages = { 47, 45, 53, 57,44,63,66 };
IEnumerable seniorcitizen =
from n in ages
where n >50
select n;
foreach (var x in seniorcitizen)
Console.Write("Senior Citizen aged:{0}\n", x);
Console.Read();
}
}
}
from n in ages
where n >50
select n;
foreach (var x in seniorcitizen)
Console.Write("Senior Citizen aged:{0}\n", x);
Console.Read();
}
}
}
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When a program wants to retrieve the results of the completed asynchronous method,Which property will it check?
What is done in the Pre-Build Activity?
Generally we do the Build related settings here, For ex: setting the configuration of the build like "Debug|Any CPU".
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What are the various Branching Scenarios generally followed ?
1. Release Isolation
2. Feature Isolation
3. Team Isolation
4. Integration Isolation
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How will you make those ASP.NET controls that don’t have UI visible in Design mode?
Click View > Visual Aids > select ASP.NET Non-Visual Controls or press Ctrl + Shift + N
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What are the various edit options available in an ASP.NET Webpart?
There are 4 types of edit options available in an ASP.NET Webpart, they are:
1. Appearance
2. Behavior
3. Property
4. Layout
What are the types of zones in ASP.NET Webpart zones?
There are 4 kinds of zones in webpart zones, they are:
1. WebPart Zone
2. Editor Zone
3. Catalog Zone
4. Connection Zone
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what are the advantages of ASP.NET AJAX server framework?
Sunday, October 4, 2009
1. ASP.NET AJAX Server controls
2. ASP.NET AJAX ASP.NET Services
3. Microsoft AJAX Library
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What are the advantages of using ASP.NET Ajax over the raw Ajax coding?
1. Browser Compatibility layer.
2. Core services.
3. Base Class Library.
4. Script controls and components.
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What is JSON?
It is a Javascript Data serialization feature which does data persistance in a simple way where you require less code to read and write the data.
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What should be done to enable PageMethods in ASP.NET?
Thursday, October 1, 2009
You should set the EnablePageMethods ="true" attribute of the ScriptManager control.
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What are the conditions for making a client method searchable by ASP.NET AJAX?
1. The method must be given the ScriptMethod attribute, which is available in System.Web.Script.Sevices
2. It must be Public
3. It must be Static
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What is the use of PageMethods class in ASP.NET?
ASP.NET AJAX automatically searches for all methods declared Public Static and encapsulates them in the client PageMethods class.
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What are the 2 requirements REST services are based on?
1. An addressing scheme used to locate networked resources.
2. A methodology for returning representations of these resources.
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What are the editor webparts available in ASP.NET 2.0?
There are 4 editor Webparts present in ASP.NET, they are :
1. AppreanceEditorPart
2. BehaviourEditorPart
3. LayoutEditorPart
4. PropertyGridEditorPart
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What are the webpart menu verbs?
There are 3 types of webpart menu verbs. They are:
1. Client-side verbs
2. Server-side verbs
3. Both.
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What is the main concept behind AJAX ?
The main concept behind AJAX is to enable web pages to make HTTP requests asynchronously without reloading the entire page.
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What are the situations on which Caching Application Block can be used?
1. A static data (which rarely changes) need to be accessed.
2. when the data access is expensive.
3. Data should always be available even when the source is not available.
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With which applications can we use Caching Application Block?
1. Windows Forms
2. Console application
3. Windows service
4. COM+ server
5. ASP.NET Web application or Web service if you need features not included in the ASP.NET cache
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What is Silverlight?
Microsoft Silverlight is a cross-browser, cross-platform implementation of the .NET Framework for building rich interactive applications for the Web.
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What are exception handlers in the Exception Handling Application Block?
1. Wrap handler.
2. Replace handler.
3. Logging handler.
4. Fault Contract Exception Handler.
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What is the Unity Application Block of Enterprise Library?
The Unity Application Block (Unity) is a lightweight, extensible dependency injection container that supports constructor injection, property injection, and
method call injection.
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What is the Caching Application Block of Enterprise Library?
It allows the developer to incorporate a local cache in their applications which can either be an in-memory or backing store.
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What is the Exception Handling Application Block of Enterprise Library?
The Enterprise Library Exception Handling Application Block lets developers and policy makers create a consistent strategy for processing exceptions that
occur in all architectural layers of an enterprise application.
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What is Webpart Personalization?
It enables users to modify--or personalize--the layout, appearance, and behavior of Web Parts controls on a page.
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What is a Webpart Manager?
It manages the Webpart controls functionality and events that occur on the page.
Manages all connections between controls in the Web Parts zone on a page.
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What is jQuery?
It is basically a JavaScript framework for writing huge task of JavaScript with few lines of code. jQuery is a fast, concise, JavaScript Library that
simplifies how you traverse HTML documents, handle events, perform animations, and add Ajax interactions to your web pages
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What is an ASP.NET Webpart?
It is an integrated set of ASP.NET controls that allow the end user to modify the content, appearance, and behavior of Web pages directly in a browser.
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What is the role of WSDL in WCF?
Web Services Description Language is used to share Endpoint details with the Clients.
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What is a WCF Contract?
It says about what the Endpoint communicates. It is a collection of messages in MEP (Message Exchange Patterns) format.
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What is a WCF Endpoint Binding?
It says How to send the messages like specifying the transport protocol (e.g., TCP), encoding information (e.g., binary), and security requirements (e.g.,
SSL), etc.
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What is a WCF Endpoint?
The Endpoint is the point where messages are sent by the Client to the service. Every Service has some Endpoints based on the requirement and provides the
Client with the details. An Endpoint will have an Address, a Binding, and a Contract.
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What is a WCF Service?
It is a piece of code which can be interacted with messages. They work based on the messages from the Clients and they wait until the Client sends the
messages.
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Say any 3 key features of WCF?
1. Unified Programming Model.
2. Service Oriented Architecture.
3. Cross-Vendor interoperability.
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Say any 3 key features of WCF?
Wednesday, September 30, 2009
<h4>
1. Unified Programming Model.
2. Service Oriented Architecture.
3. Cross-Vendor interoperability.
</h4>
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What is Virtualization?
Virtualization is a technique which provides a completely virtualized infrastructure for your enterprise, from data center to desktop.
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What is an Build Agent in TFS?
It is a dedicated machine on which the build happens. It needs to have Build service installed in it.
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How will you specify the Build Order for projects in TFS?
Right-click in the project , Select “Project Build Order”. There you can specify the order in which your projects need to be built.
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How to suppress code violations in FxCop?
You can suppress code violations in FxCop by providing using the attribute
System.Diagnostics.CodeAnalysis.SuppressMessage
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What is the use of CompilerGenerateAttribute in FxCop?
If this attribute is given to your code then FxCop will not raise warnings. Generally it is used to give for
compiler generated code.
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What is shelving in TFS?
Sunday, September 27, 2009
Shelving is a way through which you save your code to TFS without checking in. If you want you can unshelve it whenever you want. Generally it is used for reviewing purpose
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What is the Svcutil.exe ?
Friday, September 25, 2009
Service Model Metadata Utility Tool is used to generate the proxy from the client.
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What will the deployment retail="true" do when set in a asp.net web.config file?
It forces the 'debug' attribute in the web.config to false, disables page output tracing, and forces the custom error page to be shown to remote users rather than the actual exception.
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What is a Unity Application Block ?
The Unity Application Block (Unity) is a lightweight, extensible dependency injection container that supports constructor injection, property injection, and method call injection.
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What are the blocks in Enterprise Library?
1. The Caching Application Block
2. The Cryptography Application Block
3. The Data Access Application Block
4. The Exception Handling Application Block
5. The Logging Application Block
6. The Policy Injection Application Block
7. The Security Application Block
8. The Unity Application Block
9. The Validation Application Block
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What is a callback function?
A callback is a function that is passed as an argument to another function and is executed after its parent
function has completed.
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What is a Build machine?
Saturday, September 19, 2009
A Build machine is a computer which is dedicated for taking builds. It should have Build Service installed in it.
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What are the types of Build Plans generally followed ?
There are generally 3 build plans followed in the industry, they are:
1. Basic
2. Standard
3. Advanced
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What are the phases in the Build process?
There are 3 phases in the build process, they are:
1. Pre-Build Activities
2. Build
3. Post-Build Activities
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What is the name of the new serializer that can be serialize and deserialize JSON objects to and from .NET introduced in .NET 3.5 ?
More Articles
1. Purpose and Usage of Partial Class
2. Design Patterns for all – Chapter I (Introduction to Design patterns and OOPs)
3. Design Patterns for all – Chapter II (Singleton Pattern)
4. Design Patterns for all – Chapter III (Factory Pattern)
5. FxCop – Part I (Introduction)
6. FxCop – Part II (A startup lesson on using FxCop)
7. FxCop – Part III (A detailed explanation over Project)
8. SharePoint for all – Chapter I (Introduction to the basics of SharePoint)
9. DataConnections in InfoPath 2007- Part I
10. Function to remove Cache Problem with IE
What are the Predefined bindings in WCF?
1. BasicHttpBinding
2. WSHttpBinding
3. WSDualHttpBinding
4. NetTcpBinding
5. NetNamedPipeBinding
6. NetMsmqBinding
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How will you check whether automated build is successful and call a custom task on successful build?
Sunday, September 13, 2009
You can do that by providing the following config entry in the MS Build or TFS Build config file,
<GetBuildProperties TeamFoundationServerUrl="$(TeamFoundationServerUrl)"
BuildUri="$(BuildUri)"
Condition=" '$(IsDesktopBuild)' != 'true' ">
<Output TaskParameter="CompilationSuccess" PropertyName="LocalCompilationSuccess" />
</GetBuildProperties>
<Exec Condition="'$(LocalCompilationSuccess)'=='true'" Command="do_the_voodoo"/>
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What are the new Features in Team Build 2008 ?
Sunday, September 6, 2009
1. Continuous Integration
2. Build Queuing
3. Scheduled Builds
4. Build Agent Management
5. Build Definition Editing GUI
6. Better Build Management
7. Managed object model
8. Improved extensibility
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What are Tasks in MS Build?
Tasks are reusable units of executable code used by MSBuild projects to perform build operations. They are declared inside the Target element.
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What are Properties in MS Build?
They are key/value pairs which are used to configure the build. They are created by declaring a
property element inside PropertyGroup element.
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What is an ItemGroup in MS Build ?
Items represent inputs to the build system and they will be added as collections which are used as
parameters for tasks. They are available inside the ItemGroup element.
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What is Team Foundation Proxy Server ?
It is used to develope a single application from many places around the world at the same time.
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What is MS Build ?
It is a build tool for Visual Studio. It will build the software in environments where even visual studio is not installed.
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When are Changeset Type branching used ?
It is used on situations like maintenace or bug fixing , ie., you knew where the break occured.
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When are Workspace Type branching used ?
Workspaces are mapped from developer's machine to server , so this type will reflect local
files.
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When are Label Type branching used ?
It is not time-based, instead used on such situations where branching needs to be done based on
a collection of files grouped by a user.This type of branching is for the needs of an individual
user.
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What are the options available on creating a branch?
There are 5 options available on creating a branch, they are :
1. Changeset
2. Date
3. Label
4. Latest Version
5. Workspace version
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Daily Tips- Tip #32 - How can i copy the files in the debug folder to some other directory automatically using the Build macros?
Sunday, August 30, 2009
Add the following line of code to the Post build event in the project properties,
call copy $(ProjectDir)$(OutDir) c:\test\
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What is STM.NET ?
STM.NET is an experimental version of the .NET Framework which has been modified to enable software transactional memory. STM.NET simplifies multithreaded application programming by allowing you to delineate sections of your code as transacted, atomic, and isolated from other atomic regions.
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What is Build Automation ?
It is a process of collecting, assembling, validating and auditing the artifacts that compirse your solution.
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What is a BVT ?
Build Verification Test(BVT) is a type of automated test which is used to validate your team's work after build.
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Does TFS store all the configuration data in TFSBuild.proj file itself ?
No. Most of the data are stored in TFS databases.
Note: In VS 2005 all configuration data were stored in this file.
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What is a Build Retention Policy ?
It is a policy using which you can decide how many build results Team Build can keep.
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Name any two Managed API Assemblies of Team Build 2008.
1. Microsoft.TeamFoundation.Build.Client.dll
2. Microsoft.TeamFoundation.VersionControl.Client.dll
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What are the 2 process templates in TFS ?
1. Microsoft Solutions Framework for Agile Software Development version 4.0 (MSF Agile for short)
2.MSF for CMMI Process Improvement version 4.0 (MSF CMMI for short).
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Daily Tips- Tip #31 - How can i copy the files in the debug folder to some other directory automatically ?
Add the following line of code to the Post build event in the project properties,
call copy E:\projectdir\bin\Debug c:\test\
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What is the name of the file you need to change to add pre- and post-build functionality into your custom package ?
Targets file.
It is located in ,
%WINDOWS%\Microsoft.NET\Framework\v2.0.50727\Microsoft.Common.targets
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What is Windows Cardspace ?
Friday, August 21, 2009
Windows CardSpace is client software that enables users to provide their digital identity to online services in a simple, secure, and trusted way.
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Tell some of the new features of ASP.NET 3.5?
Saturday, August 15, 2009
1. Expression Trees
2. Controls
1. ListView
2. DataPager
3. Support for LINQ, WCF , WPF and WWF
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What is ContentPresenter?
Thursday, August 13, 2009
It is used to present content which can be a text,image ,CLR objects, XML ,etc. It is a part of WPF.
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What are the disadvantages of LINQ over Stored Procedures ?
1.Network traffic: LINQ needs to send the entire query over the network whereas the SP need only to send sproc-name and argument.
2.Control over DB: LINQ has lesser control over DB compared to SPs as they run within the DB.
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Full Functional sample for ASP.NET FileUpload Server Control
Wednesday, August 12, 2009
The following example will save the uploaded file in the root folder of your application.
Default.aspx
============
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUpload ID="fupTest" runat="server" />
<asp:Button ID="btnUpload" runat="server" OnClick="btnUpload_Click" Text="Upload" />
<br />
<asp:Label ID="lblStatus" runat="server"></asp:Label></div>
</form>
</body>
</html>
Default.aspx.cs
============
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
protected void btnUpload_Click(object sender, EventArgs e)
{
if (fupTest.HasFile )
{
try
{
string strFileName = Path.GetFileName(fupTest.FileName);
fupTest.SaveAs(Server.MapPath("~/") + strFileName);
lblStatus.Text = "File Uploaded Successfully";
}
catch (Exception ex)
{
lblStatus.Text = "Error File could not be uploaded. The Reason for Failure is: " + ex.Message;
}
}
}
}
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ASP.NET FileUpload Server Control Sample 1
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:FileUpload ID="FileUpload1" runat="server" /></div>
</form>
</body>
</html>
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.NET 3.0, Abbreviations and Expansions, Glossary,
What is a Virtual path provider?
Friday, August 7, 2009
It is a mechanism which extends ASP.NET to serve virtual content to the compiler.
Ex:
It provides content from database instead of file system.
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What is SafeMode Parser in ASP.NET ?
SafeMode parser is an alternate to the ASP.NET Compiler. It does not compile the pages instead interpretatively parse the page.
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What is WPF (Windows Presentation foundation )?
Thursday, August 6, 2009
Windows Presentation Foundation (WPF) provides a unified programming model for building rich Windows smart client user experiences that incorporate UI, media, and documents.
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What is WWF or Windows Workflow Foundation ?
WWF (Windows Workflow Foundation) is a platform for designing, managing and executing workflow-enabled applications.
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What is Windows communication foundation, WCF?
WCF (Windows Communication Foundation) offers Distributed Programming through Service Oriented Programming Model.
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Daily Tips- Tip #30 - How to access ViewState value of the previous page in the current page ?
Previous page's information is stored in a property called PreviousPage and you can access it using the following code,
Page prePage = this.PreviousPage;
Label totalEmployees = prePage.FindControl("lblTotEmployees");
Response.Write(totalEmployees.Text);
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What are the differences between Cache object and Application object ?
| Sno | Application | Cache |
| 1 | Life of Application objects are till the end of Application unless you destroy it. | Also provides application-wide scope but get destroyed by expiration mechanism. |
| 2 | You have Locking mechanism in Application object | Not available. |
| 3 | Not available. | Has a feature called SQL Cache dependency using which you can invalidate a cache object based on the changes to its source in the table |
What is marshalling? What are the types of marshalling?
Marshalling is the process in which the data is serialized at one application domain and deserialized at the another application domain or vice versa.
Types :
1. Marshal by value
2. Marshal by reference
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On which situation Partial Classes are used ?
When multiple programmers need to work on a same class then Partial class is an obvious choice.
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What is a Partial Class (or struct or interface)?
A partial class is a feature in which you split a class definition into two or more files. All the parts are joined together when the application is compiled.
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How can you provide an alternate color schema in a Repeater Control ?
You can provide an alternate color schema in a Repeater Control AlternatingItemTemplate.
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How will you sort an Array in descending order?
You can sort an Array in descending by the calling the following methods,
Sort();
Reverse();
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Daily Tips- Tip #29 - How will you get the value of ASP.Net control in Javascript ?
You can call the ASP.NET control from Javascript using the document.getElementById method.
Ex:
Let txtEmployeeName be a Textbox, then
var tEmp = document.getElementById('<%=txtEmployeeName.ClientID%>');
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An alternate to Javascript's document.getElementByid()?
You can use as an alternate to Javascript's document.getElementByid(), the following ASP.NET AJAX's method,
$get('nameofcontrol')
Ex:
var myctrl = $get('lblTotal')
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What is the difference between Convert.ToInt32(string) and Int32.Parse(string) ?
Int32.Parse thorws an exception when null value is passed whereas Convert.ToInt32 returns zero . Apart from this both function in a simillar manner.
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What is the difference between EVAL and BIND ?
Eval is readonly and used to display whereas Bind is used to both display and update .
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SharePoint 2010 Technical Preview
Microsoft SharePoint Team Blog has announced SharePoint 2010 Technical Preview today.
What is SharePoint 2010 ?
Definition by Microsoft is "SharePoint 2010 is the business collaboration platform for the Enterprise & the Web that enables you to connect & empower people through an integrated set of rich features."
For more information refer the following link,
SharePoint 2010 Technical Preview
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What is a Top-level site in Sharepoint ?
This is the root site for your sites. It will have sub-sites and i will not be a sub-site to any other site.
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What are the Types of Design Patterns ?
The Main Types of Design Patterns are:
Design Patterns are generally classified into three categories, they are:
1. Creational
2. Structural
3. Behavioral
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What is a Creational Design Pattern ? Give Examples.
They deal with object creation. They provide you the best way to create objects based on the current situation.
Example:
Singleton, Factory method, Abstract factory, Builder
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What is a Structural Design Pattern ? Give Examples.
Structural
They deal with relationship between entities. They provide you the best way to relate entities on various scenarios.
Example:
Adapter, Aggregate, Bridge
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What is a Behavioral Design Pattern ? Give Examples.
Behavioral
They deal with communication between objects. They provide you the best way to communicate between objects.
Example:
Chain of responsibility, Command, Interpreter
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What is a Concurrency Design Patterns ? Give Examples.
They deal with multi-threaded programs. They provide solutions for multi-thread design problems.
Example:
Balking, Double checked locking, guarded suspension
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What is a Class ?
Class:
It defines characteristics of a thing and its behavior. It is blueprint based on which objects are created.
Example: Employee (which will have all the details about the employee like name, id, salary, etc and the methods which describes his behavior like calcSalary(),displaydetails(),etc.
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What is an Object ?
Is an instance of a class. It will be exactly the same as a class but can be assigned values and used whereas a class can’t be used without creating objects.
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What is Inheritance ?
A feature in which the base class’s characteristics and behavior are derived to the child class also.
What is Multilevel Inheritance ?
classes inherits from parent classes in multiple level, ie Child inherits from Parent and grandchild classes inherit from Child , like that.
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What is Hybrid Inheritance ?
A class inherits from more than one type of Inheritances mentioned above.
Ex:
It inherits from multiple and also multilevel
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What is Polymorphism ?
A feature using which more than one definition is given to a single method or operator.
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What is Association ?
Association defines a relationship between classes of objects which allows one object to cause another to perform an action on its behalf.
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What is Composition ?
Composition is a way to combine simple objects or data types into more complex ones.
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What is Aggregation ?
Aggregation is a form of composition where one looks at the system as a whole rather than as parts.
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What is the use of the PreInit Event ?
You can use the PreInit event for the following ,
1. Check the IsPostBack property to determine whether this is the first time the page is being processed.
2. Create or re-create dynamic controls.
3. Set a master page dynamically.
4. Set the Theme property dynamically.
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Skelda ASP.NET, Sharepoint, SQL server interview questions
1. What is a masterpage
2. how will you get a value from a master page to the content page
3. what are the differences between UDF and SP
4. Is an UDF Precompiled
5. Explain the Page life cycle
6. what is inetinfo
7. what is aspnet_Wp.exe
8. what is ISAPI filter
9. what is the flow of the control for a page request
10. how you gave anonymous access for a sharepoint site
11. what privileges you gave for anonymous access of a sharepoint site
12. Is there any event called PreInit
13. When is the viewstate information loaded in a page
14. Have you done performance tuning in sql server
15. what does the "Run with privelege" meanin sharepoint?
16. What are the steps for deploying a webpart
17. What is an Bubbled Event ?
18. How will you fire an Event when mouse is moved over a button ?
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How will you read the Master Pages content from the Content Page ?
You canread the Master Pages content from the Content Page by creating Public Properties and Methods in the masterpage.
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How will you get an instance of the Master Page used in your current page ?
You can get an instance of the Master Page used in your current page using the property,
Page.Master .
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How can we Create a Strongly-Typed Reference with the Master Page ?
You can can we Create a Strongly-Typed Reference with the Master Page using the ,
@MasterType Directive .
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When is the Viewstate information loaded in the Page Life Cycle of an Asp.NET page ?
After the InitComplete event and before the PreLoad Event ASP.NET Page loads view state for itself and all controls, and then processes any postback data.
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When is the ViewState information saved for the page and for all controls in ASP.NET Page Life Cycle?
How are Sessions identified in ASP.NET ?
Sessions are identified by a unique identifier that can be read by using the SessionID property.
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How will you communicate between 2 user controls in ASP.NET ?
You can communicate between 2 user controls in ASP.NET, by using Properties and Methods defined inside them and by calling the usercontrol using FindControl() method along with the respective property.
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Daily Tips- Tip #28 - How will you Regenerate Expired Session Identifiers in ASP.NET ?
To Regenerate Expired Session Identifiers in ASP.NET, set the regenerateExpiredSessionId attribute of the sessionState configuration element to true.
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When will you go for DataReader and when for DataAdapter ?
You can go for DataReader when you want to only display the data.
You can go for DataAdapte when you want to display ,edit and update the data.
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What are the differences between DataReader and DataAdapter ?
| Sno | DataReader | DataAdapter |
| 1 | Works in Connected Mode | Works in Disconnected Mode |
| 2 | Can have only one record at a time | Can have more than 1 records. |
| 3 | Is ForwardOnly and Readonly | Can navigate front and back and editable |
| 4 | Faster | Slower |
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CapGemini ASP.NET, SHAREPOINT, MOSS 2007 Interview Questions Set 2
1. What are the Session State Mechanisms in asp.net
2. What are the different types of Caching
3. What are the differences between Caching and Application
4. What areas have you worked with MOSS 2007
5. What are the objects in Classic ASP
6. How will you communicate between 2 user controls
7. How will you achive fragment caching and pageoutput caching
8. whats the difference between datareader and dataadapter
9. when will you go for datareader and when to dataadapter
10. Does cache supports Application Events
11. What are the different types of Authentications in ASP.NET?
12. What are the different types of Authorization in ASP.NET ?
13. What are the various Expiration methods in Cache ?
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What are the Types of Authorization ?
There are two types of Authorizations, they are:
1. File authorization
2. URL authorization
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What is File authorization in ASP.NET ?
It is an Authorization which checks the access control list (ACL) of the .aspx or .asmx handler file to determine whether a user has access to the file.
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What is URL authorization in ASP.NET ?
It is an authorization which maps users and roles to URLs in ASP.NET applications.
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How will you programmatically read the identity of the impersonated user ?
VB
==
Dim curUser As String = _
System.Security.Principal.WindowsIdentity.GetCurrent().Name
C#
==
String curUser =
System.Security.Principal.WindowsIdentity.GetCurrent().Name;
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How will you generate documentation from the C# file using a command-line compiler ?
If the file is commented properly , Compiling it with the /doc switch will generate the documentation.
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What are the different ways a method can be overloaded ?
1. With different number of arguments
2. With different datatypes of arguments
3. With different order of arguments
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What is an INSTEAD OF trigger ?
It is a trigger which is executed "INSTEAD OF" a TSQL statement. The main use of it is it enables views to support updates which are not updatable otherwise.
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What is referential integrity ?
Referential integrity in a relational database concept where consistency is established through Primary key and Foreign key relationship.
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What are the Differences between Response.Expires and Expires.Absolute ?
Expires:
The Expires property specifies the duration of time before a page that is cached on a browser expires.
ExpiresAbsolute:
The ExpiresAbsolute property specifies the date and time at which a page cached on a browser expires.
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What are the contents of assembly?
A static assembly will generally contain,
1. The assembly manifest.
2. Type metadata.
3. MSIL code .
4. A set of resources.
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What is role based security?
Role based Security is a feature using which access to data and resources will be given based on the roles the authenticated user has.
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What is the use of the fixed statement in C# ?
It prevents the garbage collector from relocating a movable variable and is permitted on unsafe context.
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What is BCL ?
The Base Class Library (BCL) is a standard library which is common to all languages using the .NET Framework.
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What is an app.config ?
It is the Configuration file for Windows applications , simillar to Web.config is for Web Applications.
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Daily Tips- Tip #27 - How will you set the Execution Timeout for a browser ?
The following code will set the executionTimeout as 40 mins,
<httpRuntime executionTimeout="00:40:00" />
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How will you make a process wait ?
The following code will make the process wait for 10 seconds.
System.Threading.Thread.Sleep(1000);
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Can "#Region #End Region " be created inside methods ?
No. Region can enclose methods and events , but they cant be created inside methods and events.
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Daily Tips- Tip #26 - How will you analyze and improve the behaviour of your managed applications ?
You can analyze and improve the behaviour of your managed applications using the CLR Profiler tool.
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Daily Tips- Tip #25 - How will you compare two versions of an assembly ?
You can compare two versions of an assembly, and determine the differences using the LibCheck tool.
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Daily Tips- Tip #24 - How will you merge .NET Assemblies (without Aspnet_merge.exe) ? (or) What is ILMerge ?
You can merge multiple .NET assemblies into a single .NET assembly using the ILMerge utility . It works in the same way with both .exes and .dlls.
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Daily Tips- Tip #23 - How will you merge Assemblies created by Aspnet_compiler.exe ?
The ASP.NET Merge tool (Aspnet_merge.exe) enables you to combine and manage assemblies which are created by Aspnet_compiler.exe. It works on assemblies that have been created by using ASP.NET version 2.0 or later.
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What is an Immutable Class ? , give an example.
The object of the Class whose memory is changed upon change in the content is a Mutable Class.
Ex:
String
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What is a Mutable Class ? , give an example.
The object of the Class whose memory is not changed upon change in the content is a Mutable Class.
Ex:
StringBuilder
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What are the DataConnections supported by MOSS 2007 Report Center?
The DataConnections supported by MOSS 2007 Report Center are :
1. Office Data Connection files (ODC)
2. Universal Data Connection files (UDC)
3. Reporting Services Data Sources (RSDS)
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What are Design Patterns ?
Design Patterns are best proven techniques for a common design problem. It is only a design technique and not code. Though code is available for almost all design patterns in all popular languages, design patterns mean the design technique alone.Each design pattern explains a repeated problem, gives standard solution to the problem.
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What are the different types of diagram in UML?
1. Use Case Diagram
2. Class Diagram
3. Interaction Diagrams
4. Activity Diagram
5. State Diagram
6. Physical Diagrams
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What are the differences between ASP Session and ASP.NET Session?
Asp.net session supports cookie less session & it can span across multiple servers whereas these are not available in ASP sessions.
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Which is faster among DataSet and DataReader ? Why ?
DataReader is faster as it has only one record at a time, and Dataset is slower as it fetches the entire table or set of tables.
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What are two different types of remote object creation mode in .NET ?
Object can be created using Remoting in two different ways , they are :
1. SAO (Server Activated Objects)
It is also called as Well-Known call mode. It is stateless.
2. CAO (Client Activated Objects)
It has state.
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What is CAS ?
CAS(Code Access Security) belongs to .NET Security Model and determines whether a piece of code is allowed to run or not and if allowed to run then what resources it can access.
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What are the steps followed by the Garbage Collector ?
1. Mark all the managed memory as garbage
2. Look for used memory blocks, and mark them as valid memory
3. Discard all unused memory blocks
4. Compact the heap
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what is MARS in ADO.NET ?
MARS(Multiple Active Result Sets) allows you to execute multiple queries or Stored Procedures with a single Connection.
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How will you enable ADO.NET MARS ?
You can enable MARS by setting the MultipleActiveResultSets attribute in the Connection String as follows,
"Server=localhost;Database=Northwind;" +
"Trusted_Connection=True;MultipleActiveResultSets=True";
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What is the use of ADO.NET Connection Pooling ?
The use of ADO.NET Connection Pooling is it reuses connections from a pool of Connections instead of establishing connection every time.
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On What situations Windows uses Kerberos in Integrated Windows Authentication ?
Monday, August 3, 2009
1. When the server and client are running over Windows 2000 or higher.
2. When an AD with Domain Controller which automatically acts as a key distribution center.
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What are the two protocols used for trasmitting Authentication information in Integrated Windows Authentication ?
What are the disadvantages of Digest Authentication ?
1. It works only with IE5.0 or later.
2. Works only when the virtual directory under IIS is controlled by or authenticated by Windows Active Directory domain controller.
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How can you avoid SQL Server Cursors or What is the alternate for SQL Server Cursors ?
Saturday, August 1, 2009
You can avoid SQL Server Cursors using the following methods ,
1. Temprorary Table.
2. Comma Delimited values.
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What is a SQL Server Replication and what are the Types ?
Replication is the process of copying or moving data between databases in the same server or external servers.
Types:
1. Sanpshot Replication
2. Transaction Replication
3. Merge Replication
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What is a Delegate?
It is a type safe function pointer. It can hold 1 or more methods in it. It is the base for The .NET Event Model.
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What are the important extensions of LINQ ?
Friday, July 31, 2009
The following are the important extensions to LINQ:
1. LINQ to Object
2. LINQ to SQL
3. LINQ to XML
4. LINQ to DataSet
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What is LINQ ?
LINQ (Language Integrated Query) is a set of language extensions using which you can perform query,set and tranform operations. It extends C# or VB.NET with syntax for queries and provides class libraries to use these features.
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What is DLR in .NET 4.0 ? or What is DLR?
DLR (Dynamic Language Runtime) allows any language to communicate with any other.
Ex:
Python and Ruby can communicate with C# and VB.NET
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What is the use of dynamic keyword in C#.NET 4.0 ?
dynamic keyword .NET 4.0 is used as a data type. It is simillar to the var keyword in the sense it can hold any object type which is dynamically created.
Ex:
dynamic mycalc = GetCalculator();
int sum = mycalc.Subtract(900, 500);
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Daily Tips- Tip #22 - How will you avoid Concurrency conflicts ?
You can avoid Concurrency conflicts by match all or timestamp-based concurrency. That is when updating you need to check the current values with the db values.
Ex:
Update employee set empname=@ename, phone=@phone , salary=@salary
where empid=@orginalEmpid and designation=@orginalDesignation and managerid=@orginalmanagerid
.
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What are the types of ASP.NET Cache dependencies ?
ASP.NET includes 3 types of Cache dependencies, they are :
1. Dependencies on other cache items
2. Dependencies on files or folders
3. Dependencies on a database query
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What are the building blocks of Office System BI in MOSS?
There are 4 building blocks of Office System BI in MOSS, which are:
1. Excel Services
2. KPIs
3. Reporting Services
4. BDC
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What can be the Datasources for a KPI list?
The following can be used as Datasources for a KPI list:
1. SharePoint Lists
2. Excel Workbooks
3. SQL Server 2005 Analysis Services
4. Directly fed KPI data
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What is the feature in MOSS 2007 which is used to display Reports ?
The feature in MOSS 2007 which is used to display Reports is,
The Report Center Template.
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What is Reporting Center Dashboard in MOSS 2007 ?
They are used to tie the components of your Reporting Center in desired format for the user.
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What is BDC in Sharepoint ?
BDC(Business Data Catalog) is a new feature in MOSS 2007 which is a shared service. It is used to fetch data from back-ends without coding.
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Daily Tips- Tip #21 - An alternate to Javascript's document.getElementByid()?
You can use as an alternate to Javascript's document.getElementByid(), the following ASP.NET AJAX's method,
$get('nameofcontrol')
Ex:
var myctrl = $get('lblTotal')
.
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What is an Integrated Windows Authentication ?
It is a strategy in Windows Authentication where the user name and password are not sent as clear text. But a token of logged in user is sent.
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