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