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I am getting this error after copying and pasting the code from this WebPart (http://msdn.microsoft.com/en-us/library/ms490609%28office.12%29.aspx)

It looks like the code cannot loas IFilterValues

[TypeLoadException: Could not load type 'Microsoft.SharePoint.WebPartPages.IFilterValues' from assembly 'Microsoft.SharePoint, Version=14.900.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'.]

I think the version number (14.900.0.0) is wrong and it should be ( Any ideas how to fix this?

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Have you included the assembly reference properly in your project? –  James Love Mar 8 '11 at 19:20
Yes, I have added the correct reference to Microsoft.SharePoint assembly (version = –  i.jk Mar 8 '11 at 19:47
Are you trying to do this as a sandboxed web part as you said in your other post - its a VERY key detail! –  Ryan Mar 8 '11 at 21:10
Yes. I believe this is a sandboxed Web Part –  i.jk Mar 8 '11 at 22:43

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