public void Submit() { if (_isNewEntry == true) { // Add a new client var model = PopulateClientModel(); _clientData.InsertClientData(model); _windowManager.ShowMessageBox("The client has been added successfuly"); } else { // Update selected client var model = PopulateClientModel(); _clientData.UpdateClientData(model); _windowManager.ShowMessageBox("The client has been updated successfuly"); } ClearFields(); SetFormVisibily(Visibility.Visible, Visibility.Collapsed); GetClients(); }