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POUnlock UI with jQuery BlockUI Plugin after the Open/Save As dialog box appears
 

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  1. POUnlock UI with jQuery BlockUI Plugin after the Open/Save As dialog box appears
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    <p>I'm using <a href="http://malsup.com/jquery/block/" rel="nofollow noreferrer">jQuery BlockUI Plugin</a> to show busy message when a click event is fired.</p> <p>In the scenario below, it's working fine. The busy message shows and locks UI on click event, and dissapears when postback's done.</p> <p>No file creation involved, which invokes browser Open/Save As dialog box</p> <p>Mark-up:</p> <pre><code>$(function() { // when document has loaded ($.unblockUI); //unlock UI //Show busy message on click event and disable UI $('#btnDemo').click(function() { $.blockUI({ message: '&lt;h3&gt;Please wait...&lt;/h3&gt;' }); }); }); &lt;asp:Button ID="btnDemo" runat="server" Text="Hello World" /&gt;&lt;br/&gt; </code></pre> <p></p> <p>Code behind:</p> <pre><code> Protected Sub btnDemo_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnDemo.Click Label1.Text = "Hello World" Threading.Thread.Sleep(6000) End Sub </code></pre> <p><strong>Now, here comes the problem</strong>. There's file creation involved and it invokes browser Open/Save As dialog box. The busy message shows and locks UI on click event, but doesn't dissapear and unlock UI when postback's done and user saves file.</p> <p>Mark-up:</p> <pre><code>$(function() { // when document has loaded ($.unblockUI); //unlock UI //Show busy message on click event and disable UI $('#btnCreateFile').click(function() { $.blockUI({ message: '&lt;h3&gt;Please wait...&lt;/h3&gt;' }); }); }); &lt;asp:Button ID="btnCreateFile" runat="server" Text="Create File" /&gt;&lt;br/&gt; </code></pre> <p>Code-behind:</p> <pre><code> Protected Sub btnCreateFile_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnCreateFile.Click Dim filename As String = "demo.xls" Response.ContentType = "application/vnd.ms-excel" Response.AddHeader("Content-Disposition", String.Format("attachment;filename={0}", filename)) Response.Clear() Response.[End]() End Sub </code></pre> <p>I want to get rid of the busy message and unlock the UI when Open/Save As dialog box appears.</p>
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