public void Drop(IDropInfo dropInfo)
{
var dataObject = dropInfo.Data as DataObject;
if (dataObject != null)
{
if (dataObject.ContainsFileDropList())
{
Mementor.BeginBatch();
var filedrop = dataObject.GetFileDropList();
foreach (string str in filedrop)
{
foreach (string fm in FileMask)
{
if (System.IO.Path.GetExtension(str).ToUpperInvariant() == fm)
{
FileNameItem lbfn = new FileNameItem(Mementor)
{
FileName = str, FileIsSelected = false
};
FilePaths.Add(lbfn);
Mementor.ElementAdd(FilePaths, lbfn);
}
}
}
Mementor.EndBatch();
}
}
if (dropInfo.DragInfo != null)
{
if (dropInfo.DragInfo.VisualSource != dropInfo.VisualTarget && dropInfo.Data.GetType() == typeof(FileNameItem))
{
FileNameItem filenameitem = dropInfo.Data as FileNameItem;
FileNameItem newfilenameitem = filenameitem.Clone() as FileNameItem;
FilePaths.Insert(dropInfo.InsertIndex, newfilenameitem);
Mementor.ElementAdd(FilePaths, newfilenameitem);
}
}
}
private static void ClassChanged(object sender, NotifyCollectionChangedEventArgs args)
{
switch (args.Action)
{
case NotifyCollectionChangedAction.Move:
M.ElementIndexChange((Class)sender, (Student)args.OldItems[0], args.OldStartingIndex);
Cache = new ObservableCollection <Student>((Class)sender);
break;
case NotifyCollectionChangedAction.Add:
case NotifyCollectionChangedAction.Replace:
case NotifyCollectionChangedAction.Remove:
if (args.OldItems != null)
{
foreach (var student in args.OldItems.Cast <Student>())
{
M.ElementRemove((Class)sender, student, Cache.IndexOf(student));
student.PropertyChanging -= StudentChanging;
}
}
if (args.NewItems != null)
{
foreach (var student in args.NewItems.Cast <Student>())
{
M.ElementAdd((Class)sender, student);
student.PropertyChanging += StudentChanging;
}
}
Cache = new ObservableCollection <Student>((Class)sender);
break;
default:
throw new NotSupportedException();
}
}
