VSTO: Enable ribbon button only when a document is loaded

Question

How does one set a ribbon button in a Word add-in to be enabled when a document is loaded and disabled when no documents are loaded, just Like most of the built-in buttons?

Answer 1

Use the DocumentChange event instead. Hook up will be something like this:

Globals.ThisAddIn.Application.DocumentChange += new EventHandler(OnDocumentChange);

And the Handler

void OnDocumentChange()
{
    this.myButton.Enabled = wordApp.Documents.Count > 0;
}