What is WPF (Windows Presentation foundation )?

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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What data type does the RangeValidator supports ?

Integer, String and Date .

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