I'm working on an Outlook add-in that requires the Office specific FileDialog to interoperate with a Sharepoint site; the common file dialog doesn't have the interoperability. I know that both Word and Excel have a get_fileDialog method under Globals.ThisAddIn.Application.Application, but Outlook doesn't seem to. How do I launch an Outlook FileDialog? Is it even possible?
If you have COMDLG32.OCX ("Common Dialog ActiveX Control") installed, then you can use this - it's explained here, with an example. (Scroll down just past the screenshot entitled "FIGURE 2: Don't try to select more than one file in Word! ").