How to find the file name of a the document that belongs to an ITextView?

Question

I am currently writing a Visual Studio extension and have implemented the function TextViewCreated in a class that implements an ITextViewCreationListener interface.

The function is called with an ITextView parameter that represent the content of the editor window that just has been created. However, I need not just the contend of the edited document but also the path the file it represents, and an ITextView object apparently has no method to get that information.

So far, I have used the DTE2.ActiveDocument property, but it does not always work correctly. Especially if one opens a new text window in Visual Studio while another one is already open, ActiveDocument refers to the previous document.

What can one do to correct this?

Answer 1

using Microsoft.VisualStudio.Text;

public string GetDocumentPath(ITextView view)
{
    if (view.TextBuffer.Properties.TryGetProperty(typeof(ITextDocument), out ITextDocument textDocument) && textDocument is not null)
    {
       return textDocument.FilePath;
    }

    return null;
}