The MSComDlg CommonDialog control could be used to display several types of dialogs: open file, save file, printer, color and font dialogs. In .NET there are different types of Dialog controls that should be used according to each case. Because of that, the Visual Basic Upgrade Companion converts the CommonDialog control used in the Visual Basic 6.0 source code according to its use to the following alternatives controls:
ColorDialog, FontDialog, OpenDialog, SaveDialog and PrintDialog.
The VBUC determines the more suitable alternatives to upgrade the source code.