Visio AddIn (C#) for saving a page as *.svg

Question

I wrote a small C# Visio Addin which should export the current page of the Visio document as *.svg whenever the open Visio file is saved:

Application.ActivePage.Export("C:\\Users\\x\\Desktop\\example.svg");

Unfortunately, when it runs this line it gets stuck in Visio with a window displaying "Preparing to save..." and a progress bar at 88%.

I tried several things (e.g. different target paths, running as administrator etc.) but nothing helped. It always gets stucked there and I can only click abort then.

When I do the same manually in Visio (Save as svg) then it works without any issue.

The same code with e.g. *.png instead of *.svg works well.

Do you have any idea what could be the problem here?

Thanks.

Does it do this for every input file, or just one? Can you look using ProcMon what's happening? — CodeCaster
Have you tried saving as .svg with a simple page of just one rectangle? — Paul Herber
Just a guess, maybe there is a progress dialog in the background, or some sort of question dialog? Try clicking ALT+TAB. — Nikolay

theNewOne theNewOne · Accepted Answer · 2020-07-24T08:31:14

Solved it by running the above code in the event Application.BeforeDocumentSave instead of Application.DocumentSaved ...but no idea why it works now.

Visio AddIn (C#) for saving a page as *.svg

1 Answers