Can not find System.Windows Assembly

Question

This is the error we get:

Error 1 The type \'System.Windows.Point\' is defined in an assembly that is not referenced. You must add a reference to as

Answer 1

I had this occur on a machine with VS 2010 once before. For some reason, the System.Windows assembly was not found in the .NET tab of Add Reference window. Very strange.

In this case, you will just have to go to the Browse tab and navigate to:

C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Windows\

Once there, select the proper version subfolder (should look something like... v4.0_4.0.0.0__b03f5f7f11d50a3a) and then choose the System.Windows.dll there.