通过单击按钮从 WP8 地图控件中删除图层

Question

是否可以通过按一下按钮从地图控件中删除图层/图钉？下面是我添加图层的代码：

        MapLayer layer1 = new MapLayer();

        Pushpin pushpin1 = new Pushpin();
        pushpin1.GeoCoordinate = new GeoCoordinate(51.503147, -0.113245);
        pushpin1.Content = "Pin 1";

        MapOverlay overlay1 = new MapOverlay();
        overlay1.Content = pushpin1;
        overlay1.GeoCoordinate = new GeoCoordinate(51.503147, -0.113245);
        layer1.Add(overlay1);

        WC_WATMap.Layers.Add(layer1);

Answer 1

如果您不需要完全删除它们并且只是希望它们不再显示，只需将可见性设置为折叠即可。

pushpin1.Visibility = System.Windows.Visibility.Collapsed;

或

Pushpin pushpin = (Pushpin)this.FindName("pushpin1");
pushpin.Visibility = System.Windows.Visibility.Collapsed;

如果您需要完全清除它们，可能是从某个地方开始

Map.Layers.Remove()
Map.Layers.Remove((MapOverlay)this.FindName("layer1"));

最后感谢 Anthony Russell 以评论形式给出答案

WC_WATMap.Layers.Clear();