private void btnSort_Click(object sender, RoutedEventArgs e)
{
SortItem item = (sender as Button).Tag as SortItem;
if (item != null)
{
SortTasks(item);
}
}
public void SortTasks(SortItem item, bool?desc = null)
{
ICollectionView view = CollectionViewSource.GetDefaultView(ViewModel.Tasks);
if (view != null)
{
SortDescription sortDesc = CollectionHelper.SortCollection(view, item.Property, item.StartDescending);
ViewModel.Sorts.SortBy(sortDesc.PropertyName, desc != null ? desc.Value : sortDesc.Direction == ListSortDirection.Descending);
}
}