Help me please
I added custom ribbon button into sharepoint with code in element.xml
CommandAction="/_layouts/.../test.aspx?ListID={ListId}&...I was debugging test.aspx page, when i noticed that its load event handlers are being called twice.
But is not Postback reason. I found first call is with Request.Headers["X-Requested-With"] = "XMLHttpRequest"
What is the reason ? I think previously worked it correctly for me (only once)
What I activated?
Thank you very much