__doPostBack Javascript not working in IE8 & Firefox Browser Not firing my event in c# Button Click Event (btnSubmit_Click)

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var btn = document.getElementById("<%=Button1.ClientID %>");
               btn.click();
               __doPostBack('btn', 'OnClick');




                <div style="display: none;">
                <asp:Button ID="Button1"  runat="server"  OnClick="btnSubmit_Click"/>
                 </div>



           C# Codebind

          public void <btnSubmit_Click(object sender, EventArgs e)
          {
        //Code

           }

Posted 25-Jul-15 1:05am

Sathish km

Updated 25-Jul-15 1:07am

v2

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Sreekanth Mothukuru 25-Jul-15 8:54am

What compelled you to use __doPostBack ?

Richard Deeming 28-Jul-15 10:34am

REPOST
http://www.codeproject.com/Questions/1012565/doPostBack-Javascript-not-working-in-IE-Firefox-Br[^]

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Roshan 11862764 · Accepted Answer · 2015-07-25T05:09:00

Even though we use same version of IE (IE8), on different Microsoft OS, IE responds in different manner for same set of codes certain times.
Recently I also faced such kind of error where in Same part of JavaScript code and Button Click event behaved differently in window XP and Windows 7 and Windows Server 2012.
On window XP button event worked properly but on Windows 7 click event didn't fired and on windows 2012 _doPostBack error is raised by IE javascript.
I haven't found a root cause for it, but there are certain things you can check in you code and javascript.

* Makes sure there are no junk characters in javascript code (Some times junk characters are not visible).
* Check if you are using Update Panel on your page. Your Button may be outside update panel. Add PostBack or AsycnPostBack trigger on the button control to this Update Panel. Ajax Update Panel also shows different behavior on different OS.