How do I enable/disable my Ribbon Buttons in Outlook
问题 I have an Outlook Add-in created with VSTO. Using the Ribbon Designer I have created a tab with three buttons on it. ( Environment: Outlook 2010, .NET 4.0, VSTO latest runtime ) When one of the buttons is pressed a modeless dialog is opened. As long as the user is working on this dialog I do not want him to be able to press the button again. So basically I want to gray out the button till the dialog is closed. How can I do this? For whatever reason, in the button click handler, if I do this