public static void Sort(this GridViewColumnHeader column)
{
if (column != null)
{
ListView parent = column.ParentListView();
if (parent != null)
{
if (!GetIsSorting(parent))
{
SetIsSorting(parent, true);
string fieldxxx = GetSortColumnID(column);
string[] fieldList = null;
string field = null;
if (!string.IsNullOrEmpty(fieldxxx))
{
fieldList = fieldxxx.Split('|');
if (fieldList.Length == 1)
{
field = fieldList[0];
}
}
//TODO: Allow compound column fields.
GridViewColumnHeader _CurSortCol = GetCurrentSortColumn(parent);
SortAdorner _CurAdorner = GetCurrentSortAdorner(parent);
if (fieldList != null)
{
ListCollectionView dataView = CollectionViewSource.GetDefaultView(parent.ItemsSource) as ListCollectionView;
if (dataView != null)
{
if (_CurSortCol != null)
{
AdornerLayer.GetAdornerLayer(_CurSortCol).Remove(_CurAdorner);
dataView.SortDescriptions.Clear();
parent.Items.SortDescriptions.Clear();
}
else
{
if (_CurAdorner != null)
{
AdornerLayer.GetAdornerLayer(parent).Remove(_CurAdorner);
dataView.SortDescriptions.Clear();
parent.Items.SortDescriptions.Clear();
}
}
ListSortDirection newDir = GetSortDirection(column);
_CurAdorner = new SortAdorner(column, newDir);
AdornerLayer.GetAdornerLayer(column).Add(_CurAdorner);
SetCurrentSortColumn(parent, column);
SetCurrentSortAdorner(parent, _CurAdorner);
IComparer sorter = null;
if (fieldList.Length > 1)
{
if (MultipleColumnSorter.IsCandidate(dataView.ItemProperties, fieldList))
{
if (newDir == ListSortDirection.Ascending)
{
sorter = new MultipleColumnSorter(fieldList);
}
else
{
sorter = new ReverseMultipleColumnSorter(fieldList);
}
}
else
{
foreach (string f in fieldList)
{
dataView.SortDescriptions.Add(new SortDescription(f, newDir));
}
}
}
else
{
foreach (ItemPropertyInfo p in dataView.ItemProperties)
{
if (p.Name.ToUpperInvariant() == field.ToUpperInvariant())
{
Type ptype = p.GetType();
if (ptype == typeof(DateTime))
{
if (newDir == ListSortDirection.Ascending)
{
sorter = new DateSorter();
}
else
{
sorter = new ReverseDateSorter();
}
}
else if (ptype == typeof(IComparable))
{
if (newDir == ListSortDirection.Ascending)
{
sorter = new ComparableSorter();
}
else
{
sorter = new ReverseComparableSorter();
}
}
break;
}
}
if (sorter == null)
{
dataView.SortDescriptions.Add(new SortDescription(field, newDir));
}
else
{
dataView.CustomSort = sorter;
}
}
dataView.Refresh();
}
}
SetIsSorting(parent, false);
}
}
}
}
