__doPostBack() is causing post back but not calling button click event in aspx page

Question

I am using a aspx page which is having a button.

Answer 1

I solved this question using this code:

  document.all('Button1').click();

Answer 2

have you tried using the UniqueID instead of the ClientID?

__doPostBack('<%= savebtn.UniqueID %>', "");

Also have a look at this quick tutorial on dopostback: