Label1.Text = "The Items collection contains: 
";

      foreach(RepeaterItem item in Repeater1.Items)
         {        
           Label1.Text += item.ItemType + " - " +
                        ((DataBoundLiteralControl)item.Controls[1]).Text +
                           "
";
         }

[code/]
ItemIndex

Gets the index of the item in the Repeater control from the Items collection of the control.

DataItem property

Gets or sets  a data items associated with the RepeaterItem object in the Repeater control.