![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__DataFieldGroupingDefinition`2.png)
'宣言
Public Class _DataFieldGroupingDefinition (Of TKey,TGrouping As IGrouping(Of TKey)) Implements IDataFieldGroupingDefinition, GrapeCity.DataVisualization.Chart.IEquatable(Of IGroupingDefinition), IGroupingDefinition, IQueryInterface
public class _DataFieldGroupingDefinition<TKey,TGrouping> : IDataFieldGroupingDefinition, GrapeCity.DataVisualization.Chart.IEquatable<IGroupingDefinition>, IGroupingDefinition, IQueryInterface where TGrouping: IGrouping<TKey>
System.Object
GrapeCity.DataVisualization.Chart._DataFieldGroupingDefinition<TKey,TGrouping>