'宣言
Public Class _CartesianLineLegendSymbolStyleBuilder Inherits _DefaultLegendSymbolStyleBuilder Implements ICartesianLineLegendSymbolStyleBuilder, ILegendSymbolStyleBuilder
public class _CartesianLineLegendSymbolStyleBuilder : _DefaultLegendSymbolStyleBuilder, ICartesianLineLegendSymbolStyleBuilder, ILegendSymbolStyleBuilder