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POAdding aTabPanel dynamically and making its ContentTemplate from ASPX
 

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    <p>Context:</p> <p>An AJAX Control Toolkit <code>TabContainer</code>, where each <code>TabPanel</code> is generated with code behind, and its ContentTemplate is a custom control.</p> <p>The custom control corresponds to what goes directly in the <code>TabPanel</code>'s <code>ContentTemplate</code>:</p> <pre><code>&lt;%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TabContentTemplateTest.ascx.cs" Inherits="WebGUI.Controls.TabContentTemplateTest" %&gt; &lt;asp:Label runat="server" ID="TabText" /&gt; </code></pre> <p>And code behind:</p> <pre><code>public partial class TabContentTemplateTest : UserControl, ITemplate { public string Number { get; set; } protected void Page_Load(object sender, EventArgs e) { TabText.Text = Number; } public void InstantiateIn(Control container) { container.Controls.Add(this); } } </code></pre> <p>Creation (code behind of <code>TabContainerTest</code>, having a <code>TabContainer</code> named <code>SamplesTabContainer</code>):</p> <pre><code>public string[] Numbers = { "zero", "one", "two", "three", "four" }; protected void Page_Load(object sender, EventArgs e) { for (int i = 0; i &lt; 5; i++) { var tabContent = LoadControl("~/Controls/TabContentTemplateTest.ascx") as TabContentTemplateTest; tabContent.Number = Numbers[i]; SamplesTabContainer.Tabs.Add(new TabPanel { HeaderText = i.ToString(), ContentTemplate = tabContent }); } } </code></pre> <p>The problem is that the content (here simplified to a label) doesn't show.</p> <p><strong>How can I generate the custom control from ASPX as a <code>ContentTemplate</code> and display it?</strong></p>
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