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.Net Interview Questions


1. What is ASP.Net?

Dot Net a framework developed by Microsoft on which we can develop new generation web sites using web forms(aspx), MVC, HTML, Javascript, CSS etc. Its successor of Microsoft Active Server Pages(ASP). Currently there is ASP.NET 4.0, which is used to develop web sites. There are various page extensions provided by Microsoft that are being used for web site development. Eg: aspx, asmx, ascx, ashx, cs, vb, html, XML etc
2) How many languages are supported by .NET at present time?

When .NET was introduced first time, it supports many languages like VB.NET,C#,COBOL, and Perl etc. At present time it supports almost 44 languages

3) How is it possible for .NET to support many languages?

The .NET language code is compiled to Microsoft Intermediate Language (MSIL). The generated code is called managed code. This managed code is run in .NET environment. So after compilation the language is not a barrier and the code can call or use function of another language also.

4). What’s the use of Response.Output.Write()?

 We can write formatted output  using Response.Output.Write().

5). In which event of page cycle is the ViewState available?

   After the Init() and before the Page_Load().

6) What is the difference between Server.Transfer and Response.Redirect?  
In Server.Transfer page processing transfers from one page to the other page without making a round-trip back to the client’s browser.  This provides a faster response with a little less overhead on the server.  The clients url history list or current url Server does not update in case of Server.Transfer.
Response.Redirect is used to redirect the user’s browser to another page or site.  It performs trip back to the client where the client’s browser is redirected to the new page.  The user’s browser history list is updated to reflect the new address.
7)From which base class all Web Forms are inherited?

Page class. 

8). What are the different validators in ASP.NET?

1. Required field Validator
2. Range  Validator
3. Compare Validator
4. Custom Validator
5. Regular expression Validator
6. Summary Validator

9. Which validator control you use if you need to make sure the values in two different controls matched?
Compare Validator control.
10. What is ViewState?
ViewState is used to retain the state of server-side objects between page post backs.
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