![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__ItemsQueryGroupingBuilder.png)
'宣言
Public Class _ItemsQueryGroupingBuilder Implements GrapeCity.DataVisualization.Chart.IGroupingBuilder(Of DataValueType,IQueryGrouping)
public class _ItemsQueryGroupingBuilder : GrapeCity.DataVisualization.Chart.IGroupingBuilder<DataValueType,IQueryGrouping>
System.Object
GrapeCity.DataVisualization.Chart._ItemsQueryGroupingBuilder