![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__ItemsQueryGroupingsSorter`2.png)
'宣言
Public Class _ItemsQueryGroupingsSorter (Of TKey,TGrouping As IGrouping(Of TKey))
public class _ItemsQueryGroupingsSorter<TKey,TGrouping> where TGrouping: IGrouping<TKey>
System.Object
GrapeCity.DataVisualization.Chart._ItemsQueryGroupingsSorter<TKey,TGrouping>