'宣言
Public Class _DataFieldDefinitionEqualityComparer Inherits GrapeCity.DataVisualization.Chart._ObjectEqualityComparer(Of IDataFieldDefinition) Implements GrapeCity.DataVisualization.Chart.IEqualityComparer(Of IDataFieldDefinition)
public class _DataFieldDefinitionEqualityComparer : GrapeCity.DataVisualization.Chart._ObjectEqualityComparer<IDataFieldDefinition>, GrapeCity.DataVisualization.Chart.IEqualityComparer<IDataFieldDefinition>