private static void OnSortDirectionChanged(DependencyObject sender, DependencyPropertyChangedEventArgs args)
{
var grid = sender as ListView;
if (grid != null)
{
SortableGridViewColumn col = GetCurrentSortColumn(grid);
if (col != null)
{
col.SortDirection = (ColumnSortDirection)args.NewValue;
}
Sort(grid);
}
}
private static void Sort(ListView grid)
{
ColumnSortDirection currentDirection = GetSortDirection(grid);
SortableGridViewColumn column = GetCurrentSortColumn(grid);
if (column != null && GetSortMode(grid) == ListViewSortMode.Automatic && currentDirection != ColumnSortDirection.None)
{
ICollectionView dataView = CollectionViewSource.GetDefaultView(grid.ItemsSource);
string sortBy = column.SortBy;
if (sortBy == null)
{
var binding = column.DisplayMemberBinding as Binding;
if (binding != null && binding.Path != null)
{
sortBy = binding.Path.Path;
}
}
dataView.SortDescriptions.Clear();
if (sortBy != null)
{
ListSortDirection direction;
if (currentDirection == ColumnSortDirection.Descending)
{
direction = ListSortDirection.Descending;
}
else
{
direction = ListSortDirection.Ascending;
}
dataView.SortDescriptions.Add(new SortDescription(sortBy, direction));
}
dataView.Refresh();
}
}
public static void SetCurrentSortColumn(ListView listView, SortableGridViewColumn value)
{
listView.SetValue(CurrentSortColumnProperty, value);
}
