博客

    public IList<Markers> getEngineerByCenterPoint(float latitude, float longitude)
    {
        MapAddress mapAddress = new MapAddress(latitude, longitude);
        List<Markers> markers = (List<Markers>)getEngineerRecent();
        List<MapAddress> maps = (List<MapAddress>)MapHelper.GetPointsByDistance(mapAddress,200000, markers);
        //return markers.Where(a => maps.Exists(t => a.latitude.Equals(t.lat))).ToList();  方法1
        return markers.Where(a => maps.Where(t => a.latitude == t.lat).Any()).ToList();  // 方法2
        //return markers.Where(a => !maps.Where(t => a.latitude == t.lat).Any()).ToList();  //除去交集数据，加 '!'
    }