protected void btnReject_Click(object sender, EventArgs e)
        {
            string requisitionid = (string)Session["requisitiondetail"];

            try
            {
                reqid   = Convert.ToInt32(requisitionid);
                remarks = txtBoxRemarks.Text;
                BusinessLogic_Sam.rejectRequisition(reqid, remarks);
                Response.Redirect("DepartmentRequisition.aspx");
            }
            catch (Exception exp)
            {
                Response.Write(exp.ToString());
            }
        }