${ui_action_DrawFreeHandPolygon_Title}。

${ui_action_DrawFreeHandPolygon_Description}

Inheritance: MapAction, IDrawStyle
        private void BtnFreePolygon_Click(object sender, RoutedEventArgs e)
        {
            DrawFreePolygon fp = new DrawFreePolygon(MyMap);
            fp.DrawCompleted += new EventHandler<DrawEventArgs>(fp_DrawCompleted);

            MyMap.Action = fp;
        }
 //绘制自由面
 private void btn_FreeRegion_Click(object sender, RoutedEventArgs e)
 {
     DrawFreePolygon polygon = new DrawFreePolygon(this.MyMap);
     this.MyMap.Action = polygon;
     polygon.DrawCompleted += new EventHandler<DrawEventArgs>(polygon_DrawCompleted);
 }