protected override void ApplySortCore(PropertyDescriptor property, ListSortDirection direction)
{
_sortProperty = property;
_sortDirection = direction;
// Get list to sort
List <T> items = Items as List <T>;
// Apply and set the sort, if items to sort
if (items != null)
{
ListSortDescription sort = new ListSortDescription(property, direction);
ListSortDescription[] sortArr = new ListSortDescription[_sortDescriptions.Count + 1];
_sortDescriptions.CopyTo(sortArr, 1);
sortArr[0] = sort;
_sortDescriptions = new ListSortDescriptionCollection(sortArr);
ApplySort(_sortDescriptions);
_isSorted = true;
}
else
{
_isSorted = false;
}
// Let bound controls know they should refresh their views
OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1));
}
void IBindingListView.ApplySort(ListSortDescriptionCollection sorts)
{
ListSortDescription[] sortArray = new ListSortDescription[sorts.Count + 1];
sorts.CopyTo(sortArray, 1);
sortArray[0] = fixedSort;
ApplySort(sortArray);
}
private IComparer GetSortComparer(ListSortDescriptionCollection sortDescriptions)
{
bool needSubstitution = false;
if (_sortSubstitutions.Count > 0)
{
foreach (ListSortDescription sortDescription in sortDescriptions)
{
if (_sortSubstitutions.ContainsKey(sortDescription.PropertyDescriptor.Name))
{
needSubstitution = true;
break;
}
}
if (needSubstitution)
{
ListSortDescription[] sorts = new ListSortDescription[sortDescriptions.Count];
sortDescriptions.CopyTo(sorts, 0);
for (int i = 0; i < sorts.Length; i++)
{
if (_sortSubstitutions.ContainsKey(sorts[i].PropertyDescriptor.Name))
{
sorts[i] = new ListSortDescription(((SortSubstitutionPair)_sortSubstitutions[sorts[i].PropertyDescriptor.Name]).Substitute,
sorts[i].SortDirection);
}
}
sortDescriptions = new ListSortDescriptionCollection(sorts);
}
}
return(new SortListPropertyComparer(sortDescriptions));
}