lets make it more clear. I created a Button and it opens a WindowsForm. WindowsForm has one dropdown list. But, I just want to have that dropdown list in the Process Simulate Ribbon. (For example, Prosess Simulate has all viewers in dropdown list in the ribbon). How can I create dropdown list in the ribbon?
Aha, now I understand.
See the help file Tecnomatix.NET -> Creating commands.
There you can read "The technique for implementing a combo box command is similar to that for a simple button command. The difference is that instead of implementing ITxButtonCommandResources, the command class should implement ITxComboBoxButtonCommandResources."