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POChecking username availability
 

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    <p>I have created an check username availability inside a createuserwizard. And i had added a progress indicator to the checking process and would show a spinner image (in gif format) and it was done by using java script. </p> <p>if the system is in the midst of checking the username in database, it would display the spinner image and at the same time display a text "Checking availability..."</p> <p>And the problem not is the spinner image do not appear when it was checking.. </p> <p>Here is code: </p> <pre><code>&lt;script language="javascript" type="text/javascript"&gt; // Hook the InitializeRequest event. Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(InitializeRequest); function InitializeRequest(sender, args) { // Change div's CSS class and text content. $get('UserAvailability').className = 'progress'; $get('UserAvailability').innerHTML = 'Checking availability...'; } &lt;/script&gt; &lt;asp:UpdatePanel runat="server" ID="up1"&gt; &lt;ContentTemplate&gt; &lt;tr&gt; &lt;td class="style4"&gt;Username:&lt;/td&gt; &lt;td&gt; &lt;asp:TextBox runat="server" ID="UserName" AutoPostBack="True" ontextchanged="Username_Changed" Width="190" /&gt; &lt;div runat="server" id="UserAvailability" style="background-position: left; background-repeat: no-repeat; margin-left: -250px; padding-left: 22px; float:right;"&gt;&lt;/div&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/ContentTemplate&gt; &lt;/asp:UpdatePanel&gt; </code></pre> <p>Here is the code behind: </p> <pre><code> protected void Username_Changed(object sender, EventArgs e) { System.Threading.Thread.Sleep(2000); TextBox UserNameTextBox = (TextBox)CreateUserWizardStep1.ContentTemplateContainer.FindControl("UserName"); if (Membership.GetUser(UserName.Text) != null) { UserAvailability.InnerText = "Username taken, sorry."; UserAvailability.Attributes.Add("class", "taken"); } else { UserAvailability.InnerText = "Username available!"; UserAvailability.Attributes.Add("class", "available"); } } </code></pre> <p>I have used a masterpage, I had tried putting the JS file inside masterpage, but the image still not appearing. </p> <p><strong>EDIT</strong> </p> <pre><code> &lt;style type="text/css"&gt; #UserAvailability { padding-left: 22px; margin-left: 30px; float: left; background-position: left; background-repeat: no-repeat; } .progress { background-image: url(Images/spinner.gif); } .taken { background-image: url(Images/taken.gif); } .available { background-image: url(Images/available.gif); } &lt;/style&gt; </code></pre>
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    1. PTQuestion
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    1. COwhy Threading.Sleep ?? Do you think your code is too fast and should slow down ?
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    2. COWell I can't see any markup for a 'spinner image'... Why are you sleeping your thread too? You could have a css class that adds a background image to a div for the spinner via `div.AddCssClass("processing");` and then remove it when the task returns
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    3. COYes, I did add that to my cs file.. Look above post, I had edited
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