protected void gvPromoCodes_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        try
        {
            if (e.CommandName == "status")
            {
                LinkButton lbtn = (LinkButton)e.CommandSource;
                Control ctrl = e.CommandSource as Control;
                GridViewRow row = ctrl.Parent.NamingContainer as GridViewRow;
                LinkButton lbtnstatus = (LinkButton)row.FindControl("lbtnstatus");
                Label lblstatus = (Label)row.FindControl("lblStatus");
                if (lbtnstatus.Text == "Activate")
                {
                    objBAL = new ClsBAL();
                    objBAL.ID = Convert.ToInt32(e.CommandArgument);
                    objBAL.status = "1";
                    objBAL.modifiedBy = Convert.ToInt32(Session["UserID"].ToString());
                    if (objBAL.UpdatePromoCodeStatus())
                    {
                        tdmsg.Visible = true;
                        tdmsg.Style.Add("background-color:#6CC417;", "");
                        lblMainMsg.Text = "Updated Successfully....";
                        lblMainMsg.ForeColor = System.Drawing.Color.Green;
                        BindPromocodes();
                    }
                    else
                    {
                        tdmsg.Visible = true;
                        tdmsg.Style.Add("background-color:#E77471;", "");
                        lblMainMsg.Text = "OOPS Some Problem in updation.Try Later...";
                        lblMainMsg.ForeColor = System.Drawing.Color.Maroon;
                    }
                }
                else if (lbtnstatus.Text == "Deactivate")
                {
                    objBAL = new ClsBAL();
                    objBAL.ID = Convert.ToInt32(e.CommandArgument);
                    objBAL.status = "0";
                    objBAL.modifiedBy = Convert.ToInt32(Session["UserID"].ToString());
                    if (objBAL.UpdatePromoCodeStatus())
                    {
                        tdmsg.Visible = true;
                        tdmsg.Style.Add("background-color:#6CC417;", "");
                        lblMainMsg.Text = "Updated Successfully....";
                        lblMainMsg.ForeColor = System.Drawing.Color.Green;
                        BindPromocodes();
                    }
                    else
                    {
                        tdmsg.Visible = true;
                        tdmsg.Style.Add("background-color:#E77471;", "");
                        lblMainMsg.Text = "OOPS Some Problem in updation.Try Later...";
                        lblMainMsg.ForeColor = System.Drawing.Color.Maroon;
                    }
                }
            }
        }
        catch (Exception ex)
        {

            throw ex;
        }
    }