protected void TxtFMemName_TextChanged(object sender, EventArgs e)
 {
     try
     {
         CustName = TxtFMemName.Text.ToString();
         string[] custnob = CustName.Split('_');
         if (custnob.Length > 1)
         {
             TxtFMemName.Text = custnob[0].ToString();
             TxtFMemNo.Text   = (string.IsNullOrEmpty(custnob[1].ToString()) ? "" : custnob[1].ToString());
         }
     }
     catch (Exception Ex)
     {
         ExceptionLogging.SendErrorToText(Ex);
     }
 }