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c#-4.0ms-wordvstoword-automation

Document.BuiltInDocumentProperties makes the document dirty and prompts to save everytime

The Document.BuiltInDocumentProperties makes the document dirty and prompts to save everytime even nothing has changed.

I am trying to get the template of the document in the document change event 

ActiveDocument.BuiltInDocumentProperties["Template"]

But ActiveDocument.CustomDocumentProperties works fine.

Solution 
  • Template template = (Template)ActiveDocument.get_AttachedTemplate();

    This code also gets the template of the document and it doesn't makes the document dirty. But still curious to know why ActiveDocument.BuiltInDocumentProperties["Template"] makes document dirty.