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 had the same issue since I had created the project as a C# Windows Form App (.NET Core) I decided to create it as a C# Windows Form App (.NET Framework) and I can now see and use the Designer. Note the difference between using 'Core' vs 'Framework'