When showing the open file dialog, I want to show up the "App,lication Links" category in the left side pane on Vista/7. Visual Studio does that too when opening project files.
How can I do this with a standard OpenFileDialog-Object in C#? I am using WPF by the way, but I don't think that matters in this case.
You need to use FileDialog.CustomPlaces
. That MSDN link contains some sample code to get you going. Ultimately this is wrapping the native functionality exposed by IFileDialog::AddPlace.