![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__ItemsQueryGrouping.png)
'宣言
Public Class _ItemsQueryGrouping Inherits _DataModel Implements IDataModel, GrapeCity.DataVisualization.Chart.IGrouping(Of DataValueType), IQueryGrouping, GrapeCity.DataVisualization.Chart.ITreeNode(Of IQueryGrouping)
public class _ItemsQueryGrouping : _DataModel, IDataModel, GrapeCity.DataVisualization.Chart.IGrouping<DataValueType>, IQueryGrouping, GrapeCity.DataVisualization.Chart.ITreeNode<IQueryGrouping>
System.Object
GrapeCity.DataVisualization.Chart._DataModel
GrapeCity.DataVisualization.Chart._ItemsQueryGrouping