Development and application of "Silverlight" Bing Maps: Map Management and coordinate control (coordcontr

Development and application of "Silverlight" Bing Maps: Map Management and coordinate control (Coordcontrol)

Using the Bing Maps Silverlight control Development, there are many times when you need a real-world mapping feature, which is to add a callout (such as a Pushpin) to the click Point on the current map via a mouse click event, mainly using The Viewportpointtolocation method coordinates the transformation and transforms the physical coordinates of the clicked point of the mouse into geographical coordinates (longitude, latitude), which is defined as follows:

[ScriptableMemberAttribute]
public　override　Location　ViewportPointToLocation　(Point　viewportPoint)
{}

Clicking on the map will trigger a series of Map mouse events (Mapmouseeventargs), through which event arguments can be directly or get to the physical coordinates of the mouse's current click Point, which is defined as follows:

namespace　Microsoft.Maps.MapControl
{
　　　　 public　class　MapMouseEventArgs　:　MapEventArgs
　　　　 {
　　　　　　　　 public　MapMouseEventArgs(Point　viewportPoint);

　　　　　　　　 [ScriptableMember]
　　　　　　　　 public　Point　ViewportPoint　{　get;　}
　　　　 }
}

Understand the above two key points can be achieved on the map to manage functions, such as we through the mouse click event to handle, when the mouse clicked on the map to achieve the dot, the code is as follows:

protected　void　map_MouseClick(object　sender,　MapMouseEventArgs　e)
{
　　　　 //初始化一个图标
　　　　 Pushpin　pushpin　=　new　Pushpin();
　　　　 //设置图钉对象的定位坐标
　　　　 pushpin.Location　=　map.ViewportPointToLocation(e.ViewportPoint);
　　　　 //添加图钉到地图上
　　　　 map.Children.Add(pushpin);
}