Question

I’ve created an office:word add-in using visual studio tools for office (VSTO).
I’ve modified the loadehavior of the add-in to ‘0’ to stop its auto load behavior.

My requirement is to start an word document from a c# application and enable the add-in only for this word instance.

Using Word = Microsoft.Office.Interop.Word;

{
  Word.Application wordApp;

  //Instantiate a word application
  wordApp = new Word.Application();
  wordApp.visible = true;

  // Open a document
  wordApp.Documents.Open(ref wordFile, ref Missing.value, ..... etc );  

  foreach (Word.AddIns addins in wordApp.Application.AddIns)
       MessageBox.Show(addins.ToString());
}

for loop throws exception:

Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.Office.Interop.Word.AddIn'  

* how to get/store/iterate list of addins/COMaddins *

Regards,

Answer 1

finally I found solution to my problem:

// This will return all the word addins
Microsoft.Office.Core.COMAddIns comAddins = wordApp.COMAddIns;

// Iterate through all the addins 
for(Microsoft.Office.Core.COMAddIns addins in wordApp.COMAddIns)
     MessageBox.Show(addin.Description);