confirmation message asked every time I expand and collapse treeview in IE8Version.

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Hi
In my webpage, I show confirm message when I leave the page and navigate new page. It is working fine. But one of my page has treeview. On that page only every time I expand and collapse treeview It asks confirmation message. How we avoid it. Please help me, for this problem.
My coding is

XML

<script type="text/javascript" language="javascript">
       window.onbeforeunload = function () {
          
           if (document.getElementById("<%=hdnSavingMode.ClientID %>").value.toUpperCase() == 'TRUE') {
               return "Do you want to leave this page without saving?";

           }
       };
    </script>

It happens only IE not in firefox. I am using IE 8 version.

Posted 5-Mar-14 19:28pm

devausha

Updated 6-Mar-14 0:41am

v3

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Krunal Rohit 6-Mar-14 2:03am

Can you post your code ?

-KR

devausha 6-Mar-14 4:19am

see my updated question

2 solutions

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**Shelby Robertson** · Answer 1 · 2014-03-06T04:56:00

This is actually working correctly in IE8 and broken in Firefox. This event will fire every time page posts back, which is why you are seeing it when using the treeview. Firefox has a known issue where the returned text is not displayed to the user (Here[^], Here[^]). The correct way to use onbeforeunload for firefox is:

JavaScript

<script type="text/javascript" language="javascript">
       window.onbeforeunload = function (event) {
          
           if (document.getElementById("<%=hdnSavingMode.ClientID %>").value.toUpperCase() == 'TRUE') {
               if(event != null && typeof(event) != 'undefined')
                   event.returnValue = "Do you want to leave this page without saving?";
               return "Do you want to leave this page without saving?";
 
           }
       };
    </script>

Aravindba · Answer 2 · 2014-03-06T18:08:00

Solution 2

Hai

in ur treeview expand and collapse page hit the server,so in page onbeforeunload event fires,so try to avoid page refresh when expand or collapse treeview,so use update panel for treeview,it avoid page reload,

U have to move confirm message to server side button click event instead of client side or use client side button click event dont use window event,

ASP.NET

<asp:UpdatePanel ID="UpdatePanel2" runat="server">
                                  <ContentTemplate>

                                  </ContentTemplate>
                              </asp:UpdatePanel>

in treeview expand and collapse u did in server side ?,try to expand and collapse form client. side

regards
Aravind

Posted 6-Mar-14 18:08pm

Aravindba

Updated 6-Mar-14 21:58pm

v3

Comments

devausha 7-Mar-14 0:41am

Hi Aravind,
Thanks for your reply, I am using update panel, but same issue happens. my code is
<asp:UpdatePanel ID="UpdatePanel5" runat="server">
<contenttemplate>
<asp:TreeView ID="Menu1" runat="server" ImageSet="Arrows" ShowCheckBoxes="All">

And I don't how to call confirm message from server side. Can u help me.

Aravindba 7-Mar-14 1:01am

how u leave current page and navigate to other page ? in which click event ?

devausha 7-Mar-14 1:49am

I am not using event. If the user leave the page, if they close the page or other wise navigate new page, it will call automatically.

Aravindba 7-Mar-14 2:01am

where u put redirect to other page ? or if click browser close ('X') button ?

devausha 7-Mar-14 3:17am

click browser close button, otherwise I move one page to other page by clicking link