Extension Source Code Not Updated

  
Hi, I am having a problem that when I tried to created an extension for .NET, for the first time publish, everything is ok, I was able to modify the source code.

However after that I tried to add a new action in the extension, and pressed the button "Update Source Code", and I tried to edit the source code, it was not updated in visual studio.

Please advise what is the root cause and how can I solve this issue.
Hi Dongyu,

Do you open Visual Studio from Integration Studio, or do you open it manually?
Kilian Hekhuis wrote:
Hi Dongyu,

Do you open Visual Studio from Integration Studio, or do you open it manually?
 Hi Kilian,

I open VS from Integration Studio
 
Mmm, that's weird, I've never encountered this. What happens if you first open VS and open the main source file, then add an action in Integration Studio, then again press Update Source Code, then switch back to VS? In my experience, VS then asks whether you want to reload the modified source file.