Manage Multiple Instances of the window when there is already one running

[youssefadel3210]

When I start my application or revit addin in general using wpf an issue occurs which is when I run it again with the first window active, another starts, How Do I prevent that from happening, I tried mutex but it runs for the first time and never run again even if it's closed

[chuongmep]

Hi @youssefadel3210 , this is good question and I believe that it included in the code of Revit Addin Manager, you can reference to source code as well