There is an issue in Microsoft’s latest SP1 for Visual Studio 2008. If you have a partial class with Using statement at the top of the file for a Linq-To-SQL Data Classes context object. You will get above error. Visual Studio will delete the corresponding “.designer.cs” file for your data context and nothing will be compiled.
To solve this issue, you may have to move “Using” statements inside namespace declaration. This is a workaround provided by Microsoft.
Thanks for this information…. I came to work today adding few things to some classes and it started to crash.
I have so many problems with VS SP1 … it screwed more things than fixed. I don’t undertand why they released it at all…
Thanks a lot. It really helped me.
Lifesaver! I was going nuts with this!