form1.cs

带有GPS功能的Mobile上

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.WindowsMobile.Samples.Location;

namespace GPSTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        ////GPS设备状态对象
        //GpsDeviceState device = null;
        ////GPS位置对象
        //GpsPosition position = null;
        ////GPS对象
        //Gps gps = new Gps();
        private EventHandler updateDataHandler;
        GpsDeviceState device = null;
        GpsPosition position = null;

        Gps gps = new Gps();


        private void Form1_Load(object sender, System.EventArgs e)
        {
            btStopGPS.Enabled = false;

            updateDataHandler = new EventHandler(UpdateData);

            //status.Text = "";

            //status.Width = Screen.PrimaryScreen.WorkingArea.Width;
            //status.Height = Screen.PrimaryScreen.WorkingArea.Height;

            gps.DeviceStateChanged += new DeviceStateChangedEventHandler(gps_DeviceStateChanged);
            gps.LocationChanged += new LocationChangedEventHandler(gps_LocationChanged);
        }

        protected void gps_LocationChanged(object sender, LocationChangedEventArgs args)
        {
            position = args.Position;

            // call the UpdateData method via the updateDataHandler so that we
            // update the UI on the UI thread
            Invoke(updateDataHandler);

        }

        void gps_DeviceStateChanged(object sender, DeviceStateChangedEventArgs args)
        {
            device = args.DeviceState;

            // call the UpdateData method via the updateDataHandler so that we
            // update the UI on the UI thread
            Invoke(updateDataHandler);
        }

        void UpdateData(object sender, System.EventArgs args)
        {
            if (gps.Opened)
            {
                string str = "";
                if (device != null)
                {
                    str = device.FriendlyName + " " + device.ServiceState + ", " + device.DeviceState + "\n";
                }

                if (position != null)
                {
                     
                    if (position.LatitudeValid)
                    {
                        str += "纬度：\n" + position.DoubleLatitude.ToString() + "\n";
                        //str += "Latitude (DD):\n   " + position.Latitude + "\n";
                        //str += "Latitude (D,M,S):\n   " + position.LatitudeInDegreesMinutesSeconds + "\n";
                    }

                    if (position.LongitudeValid)
                    {
                        str += "经度：\n" + position.DoubleLongtitude.ToString() + "\n";
                        //str += "Longitude (DD):\n   " + position.Longitude + "\n";
                        //str += "Longitude (D,M,S):\n   " + position.LongitudeInDegreesMinutesSeconds + "\n";
                    }

                    if (position.SpeedValid)
                    {
                        str += "速度：\n" + position.Speed.ToString() + "\n";
                    }

                    if (position.HeadingValid)
                    {
                        str += "方向：\n" + position.Heading.ToString() + "\n";
                    }

                    if (position.SatellitesInSolutionValid &&
                        position.SatellitesInViewValid &&
                        position.SatelliteCountValid)
                    {
                        str += "Satellite Count:\n   " + position.GetSatellitesInSolution().Length + "/" +
                            position.GetSatellitesInView().Length + " (" +
                            position.SatelliteCount + ")\n";
                    }

                    if (position.TimeValid)
                    {
                        str += "Time:\n   " + position.Time.ToString() + "\n";
                    }
                }

                status.Text = str;

            }
        }

        private void Form1_Closed(object sender, System.EventArgs e)
        {
            if (gps.Opened)
            {
                gps.Close();
            }
        }

        private void stopGpsMenuItem_Click(object sender, EventArgs e)
        {
            if (gps.Opened)
            {
                gps.Close();
            }

            btStarGPS.Enabled = true;
            btStopGPS.Enabled = false;
        }

        private void startGpsMenuItem_Click(object sender, EventArgs e)
        {
            if (!gps.Opened)
            {
                gps.Open();
            }

            btStarGPS.Enabled = false;
            btStopGPS.Enabled = true;
        }

    }
}