Client(javascript) from asp:button wont persist

kdkcchoco · December 5th, 2006, 09:37 AM

Imar,
I have tried that one too.In both the cases(the one i sent you before and this one) when i click the button the pop up does come up although it doesnt do anything even if i click "ok" to it.What i am trying to do is not to get that pop up at all when i click the submit button.
Here is HTML for that one.
*****************
<HTML><HEAD><title>WebForm1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema"content="http://schemas.microsoft.com/intellisense/ie5">
<script language="JavaScript">
  var needToConfirm = true;

  window.onbeforeunload = confirmExit;

  function confirmExit()
  {
    if (needToConfirm)
      return "You have attempted to leave this page. If you have made any changes to the fields without clicking the Save button, your changes will be lost. Are you sure you want to exit this page?";
  }
</script>
</HEAD>
<body MS_POSITIONING="GridLayout">
<form name="Form1" method="post" action="WebForm1.aspx" id="Form1">
<input type="hidden" name="__VIEWSTATE" value="dDw5NjU1MTU1Ozs+ZMe/YzNJ8mHHmvf5Yc5QSvBQljk=" />

<input type="submit" name="Button1" value="Button" id="Button1" OnClientClick="needToConfirm=false; return true;" style="Z-INDEX: 101; LEFT: 8px; POSITION: absolute; TOP: 8px" />
</form>
</body>
</HTML>
***************************************

Thanks a lot
Kamal

Imar · December 5th, 2006, 09:44 AM

Right I think I know what's going on. You posted this in an ASP.NET 2 forum, but your question is related to ASP.NET 1.x, right?

OnClientClick is new in ASP.NET 2 so you can't use it.

Instead, add the attribute in the page's Load event, like this:

Code:

protected void Page_Load(object sender, EventArgs e)
{
  Button1.Attributes.Add("onclick", "needToConfirm=false; return true;");
}

You can then remove the line with document.all["Button1"]..... from your code and it should work.

Cheers,

Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
Want to be my colleague? Then check out this post.

kdkcchoco · December 5th, 2006, 09:49 AM

Imar
This is awesome.You are too good.Its working fine in this dummy one but i have to replicate this thing in actual application and will write back to tell you.Also you were right about me being stupid enough to post this in ASP.Net2.0 when i was working in 1.1.But ia m so impressed.
Thanks a ton for your help
Kamal

Imar · December 5th, 2006, 09:52 AM

You're welcome. Hope it works out in the final application as well.

Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
Want to be my colleague? Then check out this post.

kdkcchoco · December 5th, 2006, 10:33 AM

Hey Imar,
Your code is playing its magic in my application.Thanks a lot.I was working on this for 4 days now and was almost on verge of giving up.
I have still one question.Is there a way to customize the message that pop up displays?
Thanks
Kamal

Imar · December 5th, 2006, 10:39 AM

What method from which pop up?

Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
Want to be my colleague? Then check out this post.

kdkcchoco · December 5th, 2006, 10:44 AM

Imar,
Right now my java script function looks like this
*****************
function confirmExit()
  {
    if (needToConfirm)
      return "Do you want to close the screen without posting the items?Select OK to close and Cancel to ";
  }
************************
But the message it displays on pop up is
"Are you sure you want to navigate away from this page?Do you want to close the screen without posting the items?Select OK to close and Cancel to.
Pree Ok to continue and Cancel to stay on current page."
**************************
I want to change this message to just one different line.Is this possible?And if yes how?

Thanks
Kamal

Imar · December 5th, 2006, 06:48 PM

I could be wrong, but I don't think you can. Looking at the message, I think this is something created by the browser.

Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
Want to be my colleague? Then check out this post.

kdkcchoco · December 5th, 2006, 11:52 PM

Imar
So you mean even if i use something like
return=confirm("Do you want to exit?");
*****
It would still return the message like

"You are navigating away from this screen.Do you want to exit?"

Thanks
Kamal

Imar · December 6th, 2006, 02:58 AM

Yes, I think so. This is a browser security setting to stop pages from redirecting you away without your approval.

There may be ways to work around this, but I don't know them...

Imar
---------------------------------------
Imar Spaanjaars
http://Imar.Spaanjaars.Com
Everyone is unique, except for me.
Author of ASP.NET 2.0 Instant Results and Beginning Dreamweaver MX / MX 2004
Want to be my colleague? Then check out this post.