__doPostBack()导致回发，但未在aspx页面中调用按钮单击事件

我正在使用一个带按钮的aspx页面.

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

 <asp:Button ID="savebtn" runat="server" OnClick="savebtn_Click" Style="display: none" />

有两种导致回发的方法，如下面的代码所示.

There are two ways to cause post back as shown in the below code.

 $(document).ready(function () {
               var id = document.getElementById('<%= savebtn.ClientID %>');
       //Cause post back & calls page load but not savebtn_Click event
            __doPostBack('<%= savebtn.ClientID  %>', 'OnClick');

    });

    $(document).ready(function () {
                     var id = document.getElementById('<%= savebtn.ClientID %>');
           //Cuase postback & calls both PageLoad and savebtn_Click events.
           //If I use method, There is no way to know which control caused postback
            id.click();

    });

当我使用__doPostBack时，它会调用页面加载事件，但不会调用btn click事件.

When I use __doPostBack, It calls page load event but not btn click event.

是否可以使用__doPostBack触发页面加载以及savebtn_Click事件.

如果我使用id.click();如上所示，我可以调用savebtn_Click，但它不会告诉我哪个控件导致了回发.

If I use id.click(); as shown above, I am able to call savebtn_Click but it does not tells me which control caused the post back.