//public ICommand SaveCommand { get; private set; }
/// <summary>
/// Constructor for main view model
/// </summary>
public MembershipMaintenanceViewModel()
{
// checks if database file is present. If not, creates file.
if (!File.Exists(filepath))
{
using (StreamWriter s = new StreamWriter(filepath, append: false)){}
}
Memberships = new MembershipListModel();
SelectedMember = new MembershipModel();
// instantiating view command objects
AddCommand = new RelayCommand <IClosable>(AddMethod);
ChangeCommand = new RelayCommand <IClosable>(ChangeMethod); //2
ExitCommand = new RelayCommand <IClosable>(ExitMethod);
LoadCommand = new RelayCommand(LoadMethod);
//SaveCommand = new RelayCommand(SaveMethod); // removed to better fit assignment description
// instantiating messenger to receive notifications from other view models
Messenger.Default.Register <MessageMemberModel>(this, ReceiveMembership);
// Initializing window for initial field population (work-around)
// first click on listbox does not populate name and email fields otherwise
var initChangeWin = new ChangeMembershipView();
initChangeWin.Hide();
initChangeWin.Close();
// Wiring Changed event to event handler.
Memberships.Changed += RaisePropertyChanges;
// Wiring Changed event to Save
Memberships.Changed += SaveMethod;
}
/// <summary>
/// Method to open given view and close maintenance view.
/// </summary>
/// <param name="window"></param>
/// <param name="windowName"></param>
private void ChangeView(IClosable window, string windowName)
{
// If true open AddView
if (windowName.Equals("Add"))
{
var changeView = new AddMembershipView();
changeView.Show();
}
// If true open ChangeView
else if (windowName.Equals("Change"))
{
var changeView = new ChangeMembershipView();
changeView.Show();
}
// Close Main View
window.Close();
}
