GeoCoordinateWatcher.StatusChanged 事件

定义

命名空间:

System.Device.Location

程序集:

System.Device.dll

指示 GeoCoordinateWatcher 对象的状态已更改。

C#

public event EventHandler<System.Device.Location.GeoPositionStatusChangedEventArgs> StatusChanged;

事件类型

EventHandler<GeoPositionStatusChangedEventArgs>

实现

StatusChanged

示例

以下示例演示如何处理 StatusChanged 事件。

C#

using System;
using System.Device.Location;
namespace ShowStatusUpdates
{
    class Program
    {
        static void Main(string[] args)
        {
            ShowStatusUpdates();
        }

        static void ShowStatusUpdates()
        {
            GeoCoordinateWatcher watcher = new GeoCoordinateWatcher();
            watcher.Start();

            watcher.StatusChanged += new EventHandler<GeoPositionStatusChangedEventArgs>(watcher_StatusChanged);

            Console.WriteLine("Enter any key to quit.");
            Console.ReadLine();
        }

        static void watcher_StatusChanged(object sender, GeoPositionStatusChangedEventArgs e)
        {
            switch (e.Status)
            {
                case GeoPositionStatus.Initializing:
                    Console.WriteLine("Working on location fix");
                    break;

                case GeoPositionStatus.Ready:
                    Console.WriteLine("Have location");
                    break;

                case GeoPositionStatus.NoData:
                    Console.WriteLine("No data");
                    break;

                case GeoPositionStatus.Disabled:
                    Console.WriteLine("Disabled");
                    break;
            }
        }
    }
}

注解

事件 StatusChanged 在创建对象的同一线程 GeoCoordinateWatcher 上引发。

适用于