/// <summary>
/// Filters the collection according to the added filters.
/// If no filters have been applied, then the original collection
/// is returned
///
/// the collection to be filtered
/// a filtered collection
/// </summary>
public IList Filter(IList collection)
{
// no filters have been added. Return the same collection
if (_FilterList.Count == 0)
{
return(collection);
}
FilterOperation filterOp = new FilterOperation(_ObjectType, _CollectionType, _Clause, _FilterList, _Operand);
filterOp.Filter(collection, _FilteredCollection);
return(_FilteredCollection);
}