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