public void Drop(IDropInfo dropInfo)
{
if (dropInfo.Data is ImageListBoxItem)
{
// move images
var idx1 = ImageListItems.IndexOf(dropInfo.Data as ImageListBoxItem);
var idx2 = dropInfo.InsertIndex;
if (idx1 < 0 || idx2 < 0)
{
return;
}
// did the order change?
if (idx1 == idx2)
{
return;
}
// move image want the final position of the moved image
if (idx1 < idx2)
{
idx2--;
}
// put item from idx1 into the position it was dragged to
models.Images.MoveImage(idx1, idx2);
}
else if (dropInfo.Data is DataObject)
{
var obj = dropInfo.Data as System.Windows.DataObject;
var items = obj.GetFileDropList();
if (items == null)
{
return;
}
int desiredPosition = dropInfo.InsertIndex;
foreach (var file in items)
{
if (windowViewModel.ImportImage(file))
{
// put inserted image into correct position
models.Images.MoveImage(models.Images.NumImages - 1, desiredPosition++);
}
}
}
}
public async void Drop(IDropInfo dropInfo)
{
if (dropInfo.Data is ImageItemViewModel vm)
{
// move images
var idx1 = ImageListItems.IndexOf(vm);
var idx2 = dropInfo.InsertIndex;
if (idx1 < 0 || idx2 < 0)
{
return;
}
// did the order change?
if (idx1 == idx2)
{
return;
}
// move image want the final position of the moved image
if (idx1 < idx2)
{
idx2--;
}
// put item from idx1 into the position it was dragged to
models.Images.MoveImage(idx1, idx2);
}
else if (dropInfo.Data is DataObject obj)
{
var items = obj.GetFileDropList();
int desiredPosition = dropInfo.InsertIndex;
foreach (var file in items)
{
await import.ImportImageAsync(file);
// put inserted image into correct position
models.Images.MoveImage(models.Images.NumImages - 1, desiredPosition++);
}
}
}