'宣言 Public Class Int64AverageAggregator Inherits Infragistics.Olap.AverageAggregator(Of Long) Implements IAggregator, Infragistics.Olap.IAggregator(Of Nullable(Of Decimal),AverageValue(Of Long),Long)
public class Int64AverageAggregator : Infragistics.Olap.AverageAggregator<long>, IAggregator, Infragistics.Olap.IAggregator<Nullable<decimal>,AverageValue<long>,long>