Framework of the ASP.NET

I am having a problem with my computer program.  I do not know what the Framework is for this program.  Can you help me?  

This is the configuration error in the web.configuration file.

<compilation debug="true" strict="false" explicit="true" targetFramework="4.0">
assaultkittyAsked:
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DhaestCommented:
>>   ...targetFramework="4.0">

I assume that you'll need the framework .NET 4.0
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markmiddlemistCommented:
If you're using Visual Studio 2010 try right-clicking on your web site/web appication in solution explorer and go to properties.

Go to Build and check that target framework is set to ".NET Framework 4" then OK.
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assaultkittyAuthor Commented:
I am using Microsoft Visual Web Developer 2008 Express Edition!  Thanks for your help.  Your response solve another problem I was having.  Please help me with this one.

Thank you.
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assaultkittyAuthor Commented:
yes.
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markmiddlemistCommented:
If you're working with .net 4 (or want to) you're probably best off installing the 2010 version of visual web developer express - http://www.microsoft.com/visualstudio/en-us/products/2010-editions/visual-web-developer-express
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