OpenFileDialog does not contain a definition for InitialDirectory

Question

I've inherited a Silverlight 5-project which uses an OpenFileDialog. When I open the project in VS 2012 I get the error:

Error 513 System.Windows.Controls.OpenFileDialog does not contain a definition for InitialDirectory and no extension method InitialDirectory accepting a first argument of type System.Windows.Controls.OpenFileDialog could be found (are you missing a using directive or an assembly reference?)

The project was created in VS 2010 with the Silverlight 5 SDK installed and it still builds in VS 2010, but I want it to work in VS 2012.
The project upgraded successfully when I opened it in VS 2012.

Answer 1

I installed Silverlight 5 SDK for VS 2010 and now it builds in VS 2012.