private void getReferenceData()
        {
            BLL.Reference obj = new BLL.Reference();
            obj.LoadAll();

            GrdReferences.DataSource = obj.DefaultView;
            GrdReferences.DataBind();
        }
 protected void LinkBtnDelete_Click(object sender, EventArgs e)
 {
     LinkButton btn = (LinkButton)sender;
     int ID = int.Parse(btn.CommandArgument.ToString());
     BLL.Reference obj = new BLL.Reference();
     obj.LoadByPrimaryKey(ID);
     obj.MarkAsDeleted();
     obj.Save();
     getReferenceData();
 }