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POCall ASP.NET 2.0 Server side code from Javascript
 

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  1. POCall ASP.NET 2.0 Server side code from Javascript
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    <p>I'm struggling with this for the past 3 days. I need to call asp.net serverside code from Javascript when the user closes the browser. I'm using the following code to accomplish this. In my asp.net form I have various validation controls. Even if there are some validation errors, When I close the form the server side code works perfectly in my development box(windows 7). But the same code doesnt work in my production environment(windows server).</p> <p>Does it have something to do with the Validation summary or Validation controls. The button control has Causes validation set to false. So even if there is a validation error still my form will post back. Am I correct? I suspect the form is not getting post back to the server when there is a validation error. But i'm disabling all the validation controls in the javascript before calling the button click event. Can someone throw some light on this issue. </p> <p>There are few blogs which suggests to use JQUERY, AJAX (Pagemethods and script manager). </p> <pre><code> function ConfirmClose(e) { var evtobj = window.event ? event : e; if (evtobj == e) { //firefox if (!evtobj.clientY) { evtobj.returnValue = message; } } else { //IE if (evtobj.clientY &lt; 0) { DisablePageValidators(); document.getElementById('&lt;%# buttonBrowserCloseClick.ClientID %&gt;').click(); } } } function DisablePageValidators() { if ((typeof (Page_Validators) != "undefined") &amp;&amp; (Page_Validators != null)) { var i; for (i = 0; i &lt; Page_Validators.length; i++) { ValidatorEnable(Page_Validators[i], false); } } } //HTML &lt;div style="display:none" &gt; &lt;asp:Button ID="buttonBrowserCloseClick" runat="server" onclick="buttonBrowserCloseClick_Click" Text="Button" Width="141px" CausesValidation="False" /&gt; //Server Code protected void buttonBrowserCloseClick_Click(object sender, EventArgs e) { //Some C# code goes here } </code></pre>
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    1. USKannabiran
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    1. COYou can't really trap browser closing events in any standards compliant way.
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      1. USPierreten
    2. COCan you be more elaborate
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      1. POCall ASP.NET 2.0 Server side code from Javascript
      1. USKannabiran
    3. COYou need to use AJAX. Basically, you're attempting to make a client-side call to a server side method asynchronously. In other words, it needs to be asynchronous, because after the user closes the browser - you cant magically 'halt' the operation and wait for your server side code to complete. You need to hook into the client-side browser closing event, then fire off some AJAX to accomplish what you want.
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      1. USRPM1984
 

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