private void PreviewListView_RetrieveVirtualItem(object sender, RetrieveVirtualItemEventArgs e)
{
int index;
if (_indexList.TryGetValue(e.ItemIndex, out index))
{
e.Item = new ListViewItem {
ImageIndex = index, Text = e.ItemIndex.ToString()
};
return;
}
_indexList.Add(e.ItemIndex, ImageList.Images.Count);
ImageList.Images.Add(_library.GetPreview(e.ItemIndex));
e.Item = new ListViewItem {
ImageIndex = index, Text = e.ItemIndex.ToString()
};
}
