![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__DataFieldDefinition.png)
'宣言
Public Class _DataFieldDefinition Implements IDataFieldDefinition, GrapeCity.DataVisualization.Chart.IEquatable(Of IDataFieldDefinition)
public class _DataFieldDefinition : IDataFieldDefinition, GrapeCity.DataVisualization.Chart.IEquatable<IDataFieldDefinition>
System.Object
GrapeCity.DataVisualization.Chart._DataFieldDefinition
GrapeCity.DataVisualization.Chart._BinDataFieldDefinition
GrapeCity.DataVisualization.Chart._DateDataFieldDefinition
GrapeCity.DataVisualization.Chart._NumberDataFieldDefinition