private void txt_ExpirationDays_LostFocus(object sender, RoutedEventArgs e)
 {
     if (SettingsValidation.PositiveInteger(txt_ExpirationDays.Text))
     {
         statusGood();
     }
     else if (!errorPresent)
     {
         WPFMessageBox.Show("Invalid Input. Days to hold expired records must be a positive number");
         statusBad(txt_ExpirationDays);
     }
 }
 private void txt_MaxMonthlyFee_LostFocus(object sender, RoutedEventArgs e)
 {
     if (SettingsValidation.PositiveInteger(txt_MaxMonthlyFee.Text))
     {
         statusGood();
     }
     else if (!errorPresent)
     {
         WPFMessageBox.Show("Invalid Input. Maximum Monthly Fee must be a positive number");
         statusBad(txt_MaxMonthlyFee);
     }
 }