TabPanel TabChange event not updating active tab index?

**riverspiv** · Oct 16, 2010, 12:28 PM

I'm having an issue with the following code:

Code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="CooliteTesting._Default" %>
<%@ Register Assembly="Coolite.Ext.Web" Namespace="Coolite.Ext.Web" TagPrefix="ext" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <ext:ScriptManager ID="extScriptManager" runat="server" />
</body>
</html>

And the code behind:

Code:

    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            ViewPort viewPort = new ViewPort();
            viewPort.ID = "mainViewPort";

            RowLayout rowLayout = new RowLayout();
            rowLayout.ID = "mainRowLayout";

            LayoutRow row1 = new LayoutRow();
            row1.RowHeight = 0.5M;

            TabPanel tabPanel = new TabPanel();
            tabPanel.Title = "Tab Panel";
            tabPanel.AjaxEvents.TabChange.Event += TabPanel_Change;

            Tab tab1 = new Tab();
            tab1.Title = "Tab 1";

            Tab tab2 = new Tab();
            tab2.Title = "Tab 2";

            Tab tab3 = new Tab();
            tab3.Title = "Tab 3";

            tabPanel.Tabs.Add(tab1);
            tabPanel.Tabs.Add(tab2);
            tabPanel.Tabs.Add(tab3);
            row1.Items.Add(tabPanel);

            LayoutRow row2 = new LayoutRow();
            row2.RowHeight = 0.5M;

            Panel panel = new Panel();
            panel.Title = "Panel";

            row2.Items.Add(panel);

            rowLayout.Rows.Add(row1);
            rowLayout.Rows.Add(row2);

            viewPort.Items.Add(rowLayout);

            Page.Controls.Add(viewPort);
        }

        private void TabPanel_Change(object sender, AjaxEventArgs e)
        {
            TabPanel tabPanel = (TabPanel)sender;
            int activeTabIndex = tabPanel.ActiveTabIndex; // Always 0
        }
    }

Any ideas?

**riverspiv** · Oct 17, 2010, 11:30 AM

This is really frustrating...can anybody help with this? The TabChange event fires like it should, but the active tab is always the first one. How can this be? I tried setting AutoPostBack = true on the TabPanel, but all that succeeded in doing was disabling the changing of the tabs at all.

This has to be a simple fix -- some property I'm not setting? I'm really at a loss on how to fix this...

Also, I am looking for a code behind solution.

**Vladimir** · Oct 17, 2010, 1:05 PM

Hi,

You have no ASP.NET form therefore there is no automatic submit

**riverspiv** · Oct 17, 2010, 1:22 PM

Originally Posted by Vladimir

Hi,

You have no ASP.NET form therefore there is no automatic submit

I knew it was something simple I was overlooking. I got it working now, thanks!

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