如何在ASP.NET中继器DataDataBound事件中访问数据源字段？

示例：Repeater.ItemDataBound Event

// This event is raised for the header,the footer,separators,and items.
void R1_ItemDataBound(Object Sender,RepeaterItemEventArgs e)
{
  // Execute the following logic for Items and Alternating Items.
  if (e.Item.ItemType == ListItemType.Item ||
      e.Item.ItemType == ListItemType.AlternatingItem)
  {
    if (((Evaluation)e.Item.DataItem).Rating == "Good")
    {
      ((Label)e.Item.FindControl("RatingLabel")).Text= "<b>***Good***</b>";
    }
  }
}