Loading a . Ascx control through ajax is the same as loading a string. It is a one-way pipeline, and there is no post-back communication available with that control.
The UpdatePanel solution will not work either (and they are terrible too).
What you are doing here can be more easily accomplished if you use an UpdatePanel. It works client side with partial postbacks and it preserves the ASP Page Lifecycle. You could wrap your #property_tab and your #btnSave with UpdatePanels and manage the postback events server side.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.