![](dotnetdiagramimages/MESCIUS_ActiveReports_Core_Rendering_GrapeCity_DataVisualization_Chart__NumberDataField.png)
'宣言
Public Class _NumberDataField Inherits _BaseDataField Implements IDataField, GrapeCity.DataVisualization.Chart.IEquatable(Of IDataField), INumberDataField
public class _NumberDataField : _BaseDataField, IDataField, GrapeCity.DataVisualization.Chart.IEquatable<IDataField>, INumberDataField
System.Object
GrapeCity.DataVisualization.Chart._BaseDataField
GrapeCity.DataVisualization.Chart._NumberDataField