Convert VBA code to Equivalent C# code.

Microsoft.Office.Interop.Word.Document doc1 = Globals.ThisAddIn.Application.ActiveDocument;

 

This is the active document

 

I am using 

 

doc1.AttachedTemplate.AutoTextEntries("z_TOC1").Insert (Where: Selection.Range, RichText: true);

 

But we dont have property name as  AttachedTemplate

 It looks like the original code is VBA though so it's unlikely to work as-is in an independent c# project as there is no concept of "ActiveDocument" etc.