protected void btnInsertSession_Click(object sender, EventArgs e)
 {
     try
     {
         if (txtRFIDSes.Text == "")
         {
             ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "err_msg", "MessageBox('Error','Please Enter RFID Number');", true);
         }
         else
         {
             Membership objMember = PaymentController.GetMembersByRfidNo(txtRFIDSes.Text);
             if (objMember != null && objMember.ID == MemberId)
             {
                 InsertTransaction();
                 BindTransaction();
             }
             else
             {
                 ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "err_msg", "MessageBox('Error','Invalid RFID Number');", true);
                 txtRFIDSes.Text = "";
             }
         }
     }
     catch (Exception ex)
     {
         throw ex;
     }
 }