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