silverlight5.0 多选按钮控件。 DX多选按钮无法绑定数据源，本按钮实现和改进了DX中多选按钮控件，使用方便简单。-radio button controls silverlight5.0. The DX multi election button fails to bind the data source, the buttons and Improved DX multi-select button control, simple and easy to use.