WPF: The name does not exist in the namespace [duplicate]

One common solution to this known VS bug that you haven’t specified as having tried is changing the build target platform.

  1. If your current build target platform is x64, change to x86. If it’s currently x86, change to x64.

  2. Clean and Build solution for new target platform.

  3. Change back to desired target platform and re-build.

Leave a Comment