Facing problems when i add tabs dynamically from code.

HI,

I am having a requirement wherein i want to add the tabs based upon users selection dynamically thrugh code. I created a TABSTRIP with a default tab and a MULTIPAGE with a default page and gave a dropdown wherein user selects the value and click add tab button.

PROBLEM: When i click on the ADD TAB button first time the tab is getting created with the page but consequent clicks erases the old Pages.

heres my code

private bool CreateTab(string e)
{
if (!CartTabStrip.Items.Contains("Tab_"+ e))
{
TabStripItem TabItem = new TabStripItem();
TabItem.Text = e;
TabItem.ID = "Tab_" + e;
TabItem.PageViewID = "Page_" + e;
CartTabStrip.Items.Add(TabItem);
return true;
}
else
{
return false;
}
}


private void CreatePage(string e)
{
PageView TabPage = new PageView();
TabPage.ID = "Page_" + e;

TextBox text = new TextBox();
text.Text = e;

TabPage.Controls.Add(text);

CartTabs.Pages.Add(TabPage);
}