protected void grvGRN_SelectedIndexChanged(object sender, EventArgs e)
        {
            ClearControls();
            Messages1.ClearMessage();
            ViewState.Add("GRNID", new Guid(grvGRN.SelectedDataKey[0].ToString()));

            try
            {
                if (isEdit != null)
                {
                    ViewState.Add("isEdit", true);
                    btnSave.Enabled = true;
                    btnSave.Text    = "Update";
                    DataRow r = grn.GetGRN(GRNID);
                    BindGRNInfo(r);

                    //if (!(r["SIVNo"].ToString().Equals("") && r["PRNo"].ToString().Equals(""))) // disable Editing
                    //    btnSave.Enabled = false;
                }
                else
                {
                    grn.CancelGRN(GRNID, new Guid(UserPrincipal.Current.Guid.ToString()), DateTime.Now);
                    Messages1.SetMessage("Record canceled successfully.", Messages.MessageType.Success);
                    GetGRNList();
                }
            }
            catch (Exception ex)
            {
                Messages1.SetMessage(ex.Message, Messages.MessageType.Error);
            }
        }