How can I get an open folder dialog in WPF?

Question

I cannot find an OpenFolder dialog in WPF. I looked at the MS help, and it said to create a reference to Systems.Windows.Forms.dll. The only reference I could find is in the picture below. I added this to my WPF project. but when I tried to put in the following statement:

using System.Windows.Forms;

I gotan error message that this was an invalid reference. So it looks like it is impossible to create a reference to System.Windows.Forms in a WPF project. I'm rather annoyed at Microsoft for leaving a folder browser dialog out of the WPF tools. This is a serious defect.

And BTW, your help page is completely wrong, as I find it impossible to create a reference to System.Windows.Forms in a WPF project. I've tried this three times now, and I've given up.

Answer 1

Assuming that you are using .Net and not .Net Framework -

In project properties Application->General check "Enable Windows Forms for this project".

To eliminate ambiguity between System.Windows.Application and System.Windows.Forms.Application -

Button click to invoke dialog -

Result -