How to fix “namespace x already contains a definition for x” error? Happened after converting to VS2010

Question

Specifically the error occurs in the Resources.Designer.cs:

Error 2 The namespace \'ModulusFE\' already contains a definition for \'Sto

Answer 1

Unfortunately, none of the other answers helped. My problem specifically occurred in a WPF project.

The problem arose when I created a folder under the MainWindow folder, which effectively created a namespace something like ProjectName.MainWindow.Folder. Now, I believe because of some static designer code, Visual studio gets confused between the class MainWindow and the namespace Project.MainWindow.Folder . As a solution, I moved the Folder out of MainWindow. Looking at the Class View or the solution/project helps to recognize what namespaces and classes within them exist.