NeedRollBack:
if @@error>0 or @@rowcount<>1
  rollback tran
else
commit tran
GO


代码段：
 protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        SqlConnection conn = new SqlConnection();

       if (e.CommandName == "down")
        {
            int IndexID = Convert.ToInt32(e.CommandArgument);
            try
            {
                XMLData.OpenDatabase(conn);
                XMLData.ExecuteNonQuery(conn, "SP_EHOTEL_UPADVERTISE", IndexID);
                Label2.Visible = true;
                Label2.Text = "下移成功！";
            }
            catch (Exception)
            {
                Response.Write("<script language='javascript'>alert('下移出错,点取消返回');</" + "script>");
            }
            finally
            {
                XMLData.CloseDatabase(conn);
                BindAdvertise();
            }
        }
        if (e.CommandName == "up")
        {
            int IndexID = Convert.ToInt32(e.CommandArgument);
            try
            {
                XMLData.OpenDatabase(conn);
                XMLData.ExecuteNonQuery(conn, "SP_EHOTEL_DOWNADVERTISE", IndexID);
                Label2.Visible = true;
                Label2.Text = "上移成功！";
            }
            catch (Exception)
            {
                Response.Write("<script language='javascript'>alert('上移出错,点取消返回');</" + "script>");
            }
            finally
            {
                XMLData.CloseDatabase(conn);
                BindAdvertise();
            }
        }
    }