private void OnSelectionChanged()
{
if (this.SelectedItems != null && this.SelectedItems.Count > 0)
{
if (this.GalleryItems != null)
{
foreach (var item in this.GalleryItems)
{
item.IsSelected = false;
}
}
this.selectedItem = (GalleryItemViewModelBase)this.SelectedItems.First();
this.selectedItem.IsSelected = true;
}
}
private void OnSelectedItemsCollectionChanged()
{
if (this.SelectedItems != null)
{
this.SelectedItems.CollectionChanged += this.SelectedItems_CollectionChanged;
if (this.SelectedItems != null)
{
if (this.SelectedItems.Count == 0)
{
this.SelectedItems.Add(this.GalleryItems.First());
}
this.selectedItem = (GalleryItemViewModelBase)this.SelectedItems.First();
}
}
this.OnSelectionChanged();
}