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