Custom OpenFile/Folder dialog for C# Addin

Hi,

I would like to be able to use custom .NET forms to select either several files or several folders in the folder task window in Flexpro analog to the SelectFolder of the FPDatabaseAccess object.

Is there a control/form which I may inherit in the FlexPro COM object library? How can I access the browser capabilities of FlexPro in the folder task window?

Thanks.