![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__GroupingsSorter`2.png)
'宣言
Public MustInherit Class _GroupingsSorter (Of TKey,TGrouping As IGrouping(Of TKey)) Implements ISorter
public abstract class _GroupingsSorter<TKey,TGrouping> : ISorter where TGrouping: IGrouping<TKey>
System.Object
GrapeCity.DataVisualization.Chart._GroupingsSorter<TKey,TGrouping>
GrapeCity.DataVisualization.Chart._DefaultGroupingsSorter<TKey,TGrouping>