wpf 使用 C# 获取当前位置
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/32147112/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Get current location using C#
提问by Dan Priest
My skill level: Beginner
我的技能水平：初学者
Code: C# (wpf)
代码：C# (wpf)
Hardware: Dell Venue 11 Pro tablet (windows 8.1)
硬件：Dell Venue 11 Pro 平板电脑（Windows 8.1）
I would like to get the current location of my computervia cellular triangulation in coordinates(latitude/longitude). Using the following link as a reference (Getting GPS coordinates on Windows phone 7), I have been attempting to pull the lat/lon coordinates from Windows Location Services. I have verified that Windows Location Services is receiving the coordinates via cell tower triangulation, but every time I run the following code the coordinates are listed as "NaN". Any help here would be greatly appreciated.
我想通过坐标（纬度/经度）中的蜂窝三角测量来获取计算机的当前位置。使用以下链接作为参考（在 Windows 手机 7 上获取 GPS 坐标），我一直在尝试从 Windows 位置服务中提取纬度/经度坐标。我已验证 Windows 位置服务正在通过蜂窝塔三角测量接收坐标，但每次运行以下代码时，坐标都列为“NaN”。这里的任何帮助将不胜感激。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Device.Location;
namespace GPS
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
private GeoCoordinateWatcher watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.Default);
public MainWindow()
{
InitializeComponent();
watcher.Start();
LocationMessage();
}
private void LocationMessage()
{
var whereat = watcher.Position.Location;
var Lat = whereat.Latitude.ToString("0.000000");
var Lon = whereat.Longitude.ToString("0.000000");
//optional parameters for future use
whereat.Altitude.ToString();
whereat.HorizontalAccuracy.ToString();
whereat.VerticalAccuracy.ToString();
whereat.Course.ToString();
whereat.Speed.ToString();
MessageBox.Show(string.Format("Lat: {0}\nLon: {1}",Lat,Lon));
}
}
}
回答by Frode Evensen
If you only need your current position once, and not continous update as you move, you can replace Startwith TryStart:
如果您只需要一次当前位置，而不需要在移动时不断更新，则可以替换Start为TryStart：
if (watcher.TryStart(false, TimeSpan.FromSeconds(3)))
{
LocationMessage();
}
else
{
// Position not found after 3 seconds...
}
Keep in mind that this method returns synchronously, so it is best not to run in on the UI thread.
请记住，此方法是同步返回的，因此最好不要在 UI 线程中运行。
