I am in process of writing a C# Windows Forms application using Visual Studio Express 2010 ENU SP1. Further VS specifics are at the bottom of this post. I recently made so
I realise this is a really old thread now, but I had the same problem and it turns out there is another node that can go astray in the csproj file; the form .resx has an EmbeddedResource node and mine was missing the subnode Designer. This allowed me to see the form code again in the IDE.