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POAsp .Net update panel not updating
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  1. POAsp .Net update panel not updating
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    copied!<p>I have 2 pages each with an update panel. It has the same content and the same trigger on both pages.</p> <p>This is how it looks:</p> <pre><code> &lt;div id="rating"&gt; &lt;span class="rateTxt"&gt;Rate&lt;/span&gt; &lt;telerik:RadRating ID="RadRating1" runat="server" ItemCount="5" SelectionMode="Continuous" Precision="Item" Skin="Default" OnRate="RadRating1_Rate" AutoPostBack="true"&gt; &lt;/telerik:RadRating&gt; &lt;/div&gt; &lt;/li&gt; &lt;/ul&gt; &lt;asp:UpdatePanel ID="UpdatePanel2" runat="server"&gt; &lt;ContentTemplate&gt; &lt;div id="divAddMessage" runat="server" visible="false"&gt; &lt;span class="rateTxt"&gt;Do you want to add a comment?&lt;/span&gt; &lt;asp:TextBox runat="server" ID="txtComment" TextMode="MultiLine" Rows="3" Width="195"&gt; &lt;/asp:TextBox&gt; &lt;br /&gt; &lt;br /&gt; &lt;asp:ImageButton runat="server" ID="lnkAddComment" ImageUrl="~/App_Themes/123reg/Images/submit-rating.png" OnClick="lnkAddComment_Click" OnClientClick="showSuccessMessage();" /&gt; &lt;br /&gt; &lt;br /&gt; &lt;/div&gt; &lt;/ContentTemplate&gt; &lt;Triggers&gt; &lt;asp:AsyncPostBackTrigger ControlID="RadRating1" EventName="Rate" /&gt; &lt;/Triggers&gt; &lt;/asp:UpdatePanel&gt; </code></pre> <p>Now when the user rates something with the RadRating the Rate event is triggered which causes a postback.</p> <p>On the handler for the Rate event I do the following:</p> <pre><code> protected void RadRating1_Rate(object sender, EventArgs e) { divAddMessage.Visible = true; } </code></pre> <p>The same code is exactly on 2 pages. On one page it updates the divAddMessage and it becomes visible but on another page it doesn't become visible. Even if I set it to visible on that page when it postback again the Visible property is still false even after setting it to true in the above handler.</p> <p>I only set the visibily to false in the aspx file and in the above handler I set it to true. </p> <p>It turns out that I get an error in the javascript console:</p> <pre><code>Sys.InvalidOperationException: Sys.InvalidOperationException: Could not find UpdatePanel with ID 'ctl00_mainContentPlaceHolder_updatePanel'. If it is being updated dynamically then it must be inside another UpdatePanel. </code></pre> <p>I have another update panel inside a multiview. But because the active view is not the one with the update panel on postback the update panel isn't rendered. </p>
 

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