protected void btnGetAllItems_Click(object sender, EventArgs e)
    {
         ds.Clear();
         ds.ReadXml(Request.PhysicalApplicationPath + @"\Items.xml");
         foreach (DataRow dr in ds.Tables[0].Rows)
         {
               dr["Active"] = "Y";
         }
         ds.WriteXml(Request.PhysicalApplicationPath + @"\Items.xml");
         this.BindGrid();
}
