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Make sure your &quot;target&quot; Framework is v3.5 and add a reference to System.Data.Linq<br />
<a href="http://msdn.microsoft.com/en-us/library/7314433t.aspx" rel="ugc">http://msdn.microsoft.com/en-us/library/7314433t.aspx</a>&nbsp;<br />
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Ok. I added the reference and it works now. However, how do I make sure the &quot;target&quot; Framwork is v3.5?<br />

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If you were able to add the reference to the project you are using .Net Framework 3.5.<br />

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I just start to learn the Linq and Linq to SQL, in particular. The trouble I am having is that VS 2008 does not recognize System.Data.Linq. I believe taht I have t .NET 3.5 installed at (C:\WINDOWS\Microsoft.NET\<wbr />Framework\<wbr />v3.5)<br />
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Where should I start to look at? 
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I just start to learn the Linq and Linq to SQL, in particular. The trouble I am having is that VS 2008 does not recognize System.Data.Linq. I believe taht I have t .NET 3.5 installed at (C:\WINDOWS\Microsoft.NET\Framework\v3.5)

Where should I start to look at? 

Make sure your &amp;quot;target&amp;quot; Framework is v3.5 and add a reference to System.Data.Linq
http://msdn.microsoft.com/en-us/library/7314433t.aspx 
 


Ok. I added the reference and it works now. However, how do I make sure the &amp;quot;target&amp;quot; Framwork is v3.5?


If you were able to add the reference to the project you are using .Net Framework 3.5.


How to get LINQ working in the VS 2008?

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.