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  1. POasp.NET ajax do a partial return during process
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    <p>here is my problem : I have an Update Panel with a asp:TextBox inside and an onTextChanged event. During the process, a loader.gif is show thanks to the progress Template.</p> <pre><code>&lt;asp:UpdatePanel ID="UpdatePanel1" runat="server"&gt; &lt;ContentTemplate&gt; &lt;asp:TextBox ID="tboxEmailDegrade" runat="server" CssClass="cadreTexteRediger" MaxLength="250" AutoPostBack="True" OnTextChanged="tboxEmailDegradeOnTextChanged"&gt;&lt;/asp:TextBox&gt; &lt;asp:Image ID="imgVerifEmailFalse" runat="server" ImageUrl="../../Charte/images/Avis/Formulaire/ko.gif" Visible="false" style="margin-left: 4px"/&gt; &lt;asp:Image ID="imgVerifEmailTrue" runat="server" ImageUrl="../../Charte/images/check.png" Visible="false" style="margin-left: 4px"/&gt; &lt;input id="HidStatutValide" type="hidden" value="0" runat="server" /&gt; &lt;asp:UpdateProgress ID="UpdateProgress1" runat="server"&gt; &lt;ProgressTemplate&gt; &lt;img class="iconeValdation" runat="server" src="../../Charte/images/ajax-loader.gif" alt="Processing" style="margin-left: 4px; float:left" /&gt; &lt;/ProgressTemplate&gt; &lt;/asp:UpdateProgress&gt; &lt;/ContentTemplate&gt; &lt;Triggers&gt; &lt;asp:AsyncPostBackTrigger ControlID="tboxEmailDegrade" /&gt; &lt;/Triggers&gt; </code></pre> <p></p> <p>during that process i want to hide another image (in code imgVerifEmailTrue or imgVerifEmailFalse), but obviously the image will be hidden only at the end of the process, after the post back. So i have the loader and another image next to it.</p> <p>is it possible to do a partial post back to hide the image at the start of the process?</p>
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