private void GridViewColumnHeader_Click(object sender, RoutedEventArgs e)
{
var column = sender as GridViewColumnHeader;
var sort_by = column.Tag.ToString();
var listview_files = WindowUtils.FindParent <ListView>(column);
if (this.listview_sort_column != null)
{
AdornerLayer.GetAdornerLayer(this.listview_sort_column).Remove(this.listview_sort_adorner);
listview_files.Items.SortDescriptions.Clear();
}
ListSortDirection direction = ListSortDirection.Ascending;
if (this.listview_sort_column == column && this.listview_sort_adorner.Direction == direction)
{
direction = ListSortDirection.Descending;
}
this.listview_sort_column = column;
this.listview_sort_adorner = new SortAdorner(this.listview_sort_column, direction);
AdornerLayer.GetAdornerLayer(this.listview_sort_column).Add(this.listview_sort_adorner);
listview_files.Items.SortDescriptions.Add(new SortDescription(sort_by, direction));
}