排序ListBox项目清除选择

Question

I have a ListBox with

IsSynchronizedWithCurrentItem="True"

Problem is if I select more than one item and change sorting order I end up with only one item selected.

private ICollectionView FileCollectionView;
FileCollectionView = CollectionViewSource.GetDefaultView(FileCollection);
this.FilesLB.ItemsSource = CollectionViewSource.GetDefaultView(FileCollectionView);

ObservableCollection<FileData> _fileCollection = new ObservableCollection<FileData>();
public ObservableCollection<FileData> FileCollection
  { get { return _fileCollection; } }



private void SortFiles()
{
    using (FileCollectionView.DeferRefresh())
    {       
        FileCollectionView.SortDescriptions.Clear();
        FileCollectionView.SortDescriptions.Add(new SortDescription(t.SortFiles.SortBy, t.SortFiles.SortDirection));
    }

Why is that happening and how can I fix it?

Answer 1

Because you are clearing the list. Fix it by storing the selection and reselecting it after you refilled the list.