我有一簇图钉,我已经为foreach中的所有图钉添加了点击事件。 现在我需要找出单击了哪个图钉,以便相应地执行操作。下面是我的示例代码。
private void setpins()
{
Pushpin pin = null;
lstpin.Add(new clsPushpin() { stores = "chennai", _loc= new locations() { lat = 13.04, longd = 80.17 } });
lstpin.Add(new clsPushpin() { stores = "Karur", _loc = new locations() { lat = 10.58, longd = 78.07 } });
lstpin.Add(new clsPushpin() { stores = "coimbatore", _loc = new locations() { lat = 11.00, longd = 77.00 } });
foreach (clsPushpin cls in lstpin)
{
pin = new Pushpin();
GeoCoordinate geo = new GeoCoordinate(cls._loc.lat, cls._loc.longd);
pin.Location = geo;
pin.Background = new SolidColorBrush(new Color() { A = 255, R = 0, G = 100, B = 120 });
pin.Foreground = new SolidColorBrush(Colors.White);
mymap.Children.Add(pin);
pin.MouseLeftButtonUp += new MouseButtonEventHandler(pushpintap);
}
mymap.Center = pin.Location;
mymap.SetView(pin.Location, 5.0);
}
private void pushpintap(object sender, MouseButtonEventArgs e)
{
//Messagebox are what ever
MessageBox.Show("My lat long is:"+lat,+long);
}
使用上面的代码片段,保存最后一个图钉的值。但是我想找到选择通知/弹出的确切引脚。提前感谢。
您可以执行以下操作:
将 clsPushpin 对象存储在图钉标记属性中。
在图钉单击事件中,sender.tag 强制转换为 clsPushpin 对象,以获取该图钉的数据。
foreach (clsPushpin cls in lstpin)
{
pin = new Pushpin();
GeoCoordinate geo = new GeoCoordinate(cls._loc.lat, cls._loc.longd);
pin.Location = geo;
pin.Background = new SolidColorBrush(new Color() { A = 255, R = 0, G = 100, B = 120 });
pin.Foreground = new SolidColorBrush(Colors.White);
mymap.Children.Add(pin);
pin.MouseLeftButtonUp += new MouseButtonEventHandler(pushpintap);
pin.Tag = cls;
}
然后在图钉点击事件处理程序中执行以下操作:
private void pushpintap(object sender, MouseButtonEventArgs e)
{
//Messagebox are what ever
clsPushpin cls = sender.tag as clsPushpin;
MessageBox.Show("My lat long is:"+cls.lat.ToString()+","+cls.long.ToString());
}
您可能应该使用数据绑定将数据绑定到图钉集合。
您应该查询pushpintap
事件中的sender
,以找出点击的图钉的详细信息。
我遇到了类似的问题并正在寻找解决方案,我找到了您的问题。我所做的是定义一个动态创建MouseButtonEventHandler
的方法。例如,如果要显示有关每个cls
对象的信息,则可以定义下一个方法:
public MouseButtonEventHandler getHandler(clsPushpin cls)
{
return delegate(object sender, MouseButtonEventArgs e)
{
MessageBox.Show(cls.stores+" at "+cls._loc.lat+","+cls._loc.longd);
};
}
并在每次创建/添加Pushpin
时调用它:
pin.MouseLeftButtonUp += getHandler(cls);
[我尝试在没有定义getHandler
方法的情况下直接执行此操作(即:pin.MouseLeftButtonUp += delegate(...
),但它不起作用]