protected override void UpdateFiltering()
{
IFilterableDataSource filterable = this.VirtualListDataSource as IFilterableDataSource;
if (filterable == null)
return;
this.BeginUpdate();
try {
int originalSize = this.VirtualListSize;
filterable.ApplyFilters(this.ModelFilter, this.ListFilter);
this.BuildList();
//// If the filtering actually did something, rebuild the groups if they are being shown
//if (originalSize != this.VirtualListSize && this.ShowGroups)
// this.BuildGroups();
}
finally {
this.EndUpdate();
}
}