private void Button_Click(object sender, RoutedEventArgs e)
{
IEditableCollectionViewAddNewItem viewToAddDisparateItems =
catalogList.Items as IEditableCollectionViewAddNewItem;
if (!viewToAddDisparateItems.CanAddNewItem)
{
MessageBox.Show("You cannot add items to the list.");
return;
}
// Create a window that prompts the user to enter a new
// item to sell.
AddItemWindow win = new AddItemWindow();
// Create an item, depending on which RadioButton is selected.
// Radio buttons correspond to book, cd, dvd, or other.
LibraryItem newItem;
if ((bool)book.IsChecked)
{
newItem = new Book("Enter the book title", "Enter an Author", "Enter a Genre",
"Enter a call number", DateTime.Now + new TimeSpan(21, 0, 0, 0));
}
else if ((bool)cd.IsChecked)
{
newItem = new MusicCD("Enter the Album", "Enter the artist", 0, "CD.******",
DateTime.Now + new TimeSpan(14, 0, 0, 0));
}
else if ((bool)dvd.IsChecked)
{
newItem = new MovieDVD("Enter the movie title", "Enter the director",
"Enter the genre", new TimeSpan(), "DVD.******",
DateTime.Now + new TimeSpan(7, 0, 0, 0));
}
else
{
newItem = new LibraryItem("Enter the title", "Enter the call number",
DateTime.Now + new TimeSpan(14, 0, 0, 0));
}
// Add the new item to the collection by calling
// IEditableCollectionViewAddNewItem.AddNewItem.
// Set the DataContext of the AddItemWindow to the
// returned item.
win.DataContext = viewToAddDisparateItems.AddNewItem(newItem);
// If the user submits the new item, commit the new
// object to the collection. If the user cancels
// adding the new item, discard the new item.
if ((bool)win.ShowDialog())
{
viewToAddDisparateItems.CommitNew();
}
else
{
viewToAddDisparateItems.CancelNew();
}
}
private async Task <bool> SaveChangesAsync()
{
try
{
if (this.CurrentSession != null)
{
var session = this.CurrentSession;
if (_editView.IsAddingNew && this.CurrentSession != _editView.CurrentAddItem)
{
return(true);
}
if (_hasChanges || _editView.IsAddingNew)
{
if (!this.Validate())
{
return(false);
}
_isChanging = true;
this.IsBusy = true;
session.TrackIds = new ObservableCollection <int>();
foreach (var uitrack in _uiTrackList)
{
if (uitrack.IsChecked)
{
session.TrackIds.Add(uitrack.Track.Id);
}
}
if (_editView.IsAddingNew)
{
var newSession = await _sessionService.AddSessionAsync(session);
session.SessionBaseId = newSession.SessionBaseId;
_editView.CommitNew();
}
else
{
await _sessionService.UpdateSessionAsync(session);
}
session.Speaker1 = (from s in _speakerList where s.Id == session.Speaker1Id select s).FirstOrDefault();
session.Speaker2 = (from s in _speakerList where s.Id == session.Speaker2Id select s).FirstOrDefault();
this.CurrentState = NORMAL_STATE;
this.IsBusy = false;
_isChanging = false;
_hasChanges = false;
}
this.CurrentSession.PropertyChanged -= this.OnSessionPropertyChanged;
}
return(true);
}
catch
{
return(false);
}
}
void VisualCanvas_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (IsEditable)
{
Mouse.Capture(this, CaptureMode.SubTree);
this.IsDragStart = true;
IEditableCollectionViewAddNewItem items = this.Items;
StartMousePoint = e.GetPosition(sender as IInputElement);
Debug.WriteLine(StartMousePoint);
if (items.CanAddNewItem)
{
NewItem = items.AddNew();
items.CommitNew();
Canvas.SetLeft(NewCanvasItem, StartMousePoint.X);
Canvas.SetTop(NewCanvasItem, StartMousePoint.Y);
}
}
}
private async Task <bool> SaveChangesAsync()
{
try
{
if (this.CurrentSpeaker != null)
{
this.CurrentSpeaker.PropertyChanged -= this.OnCurrentSpeakerPropertyChanged;
if (_editView.IsAddingNew && this.CurrentSpeaker != _editView.CurrentAddItem)
{
return(true);
}
if (_hasChanges || _editView.IsAddingNew)
{
if (!this.Validate())
{
return(false);
}
this.IsBusy = true;
var speaker = this.CurrentSpeaker;
if (_editView.IsAddingNew)
{
_isChanging = true;
var newSpeaker = await _sessionService.AddSpeakerAsync(speaker);
speaker.Id = newSpeaker.Id;
_editView.CommitNew();
_isChanging = false;
}
else
{
await _sessionService.UpdateSpeakerAsync(speaker);
}
this.CurrentState = NORMAL_STATE;
}
}
this.IsBusy = false;
_hasChanges = false;
return(true);
}
catch
{
return(false);
}
}