__dopostback() Is Causing Post Back But Not Calling Button Click Event In Aspx Page

I am using a aspx page which is having a button. There are two ways to cause post

Solution 1:

have you tried using the UniqueID instead of the ClientID?

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

Also have a look at this quick tutorial on dopostback:

Solution 2:

I solved this question using this code:

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