Hi JeffC.
I was wondering if you could provide a little more context for what you are trying to accomplish so as to better suit the solution. I am not quite I understand the concept of hiding/unhiding a running application. Do you want to minimize the window?
Based on the information provided likely the best route for you to follow, especially if you want to remain in C#, is to use the C# implemented User Interface of the Sequence Editor. If you open the source code to it it is actually just a Windows Form. You could programatically run an instance of the C# UI, and then use the visibility property to hide/unhide the editor.
Would something like that work for you?
Regards,
James W.
Applications Engineer
National Instruments
