如何在gMapControl上显示地图？

Question

我的问题是我在运行应用程序时无法在表单上看到任何内容。这是我的代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using GMap;
using GMap.NET;
using GMap.NET.WindowsForms;

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


        private void Form1_Load(object sender, EventArgs e1)
        {
            try
            {
                System.Net.IPHostEntry e =
                     System.Net.Dns.GetHostEntry("www.google.com");
            }
            catch
            {
                gMapControl1.Manager.Mode = AccessMode.CacheOnly;
                MessageBox.Show("No internet connection avaible, going to CacheOnly mode.",
                      "GMap.NET - Demo.WindowsForms", MessageBoxButtons.OK,
                      MessageBoxIcon.Warning);
            }

            // config map
            GMaps.Instance.Mode = AccessMode.ServerAndCache;

           // gMapControl1.CacheLocation = Application.StartupPath + "data.gmdp";
            GMaps g = new GMaps();



            gMapControl1.MapType = MapType.GoogleSatellite;
            gMapControl1.MaxZoom = 6;
            gMapControl1.MinZoom = 1;
            gMapControl1.Zoom = gMapControl1.MinZoom + 1;
            gMapControl1.Position = new PointLatLng(54.6961334816182,
            25.2985095977783);

            // map events
            gMapControl1.OnCurrentPositionChanged += new
            CurrentPositionChanged(gMapControl1_OnCurrentPositionChanged);
            gMapControl1.OnTileLoadStart += new TileLoadStart(gMapControl1_OnTileLoadStart);
            gMapControl1.OnTileLoadComplete += new
            TileLoadComplete(gMapControl1_OnTileLoadComplete);
            gMapControl1.OnMarkerClick += new MarkerClick(gMapControl1_OnMarkerClick);
            gMapControl1.OnMapZoomChanged += new MapZoomChanged(gMapControl1_OnMapZoomChanged);
            gMapControl1.OnMapTypeChanged += new MapTypeChanged(gMapControl1_OnMapTypeChanged);
            gMapControl1.MouseMove += new MouseEventHandler(gMapControl1_MouseMove);
            gMapControl1.MouseDown += new MouseEventHandler(gMapControl1_MouseDown);
            gMapControl1.MouseUp += new MouseEventHandler(gMapControl1_MouseUp);
            gMapControl1.OnMarkerEnter += new MarkerEnter(gMapControl1_OnMarkerEnter);
            gMapControl1.OnMarkerLeave += new MarkerLeave(gMapControl1_OnMarkerLeave);

        }

        private void gMapControl1_OnCurrentPositionChanged(PointLatLng point)
        {

        }

        private void gMapControl1_OnMarkerLeave(GMapMarker item)
        {

        }

        private void gMapControl1_OnMarkerEnter(GMapMarker item)
        {

        }

        private void gMapControl1_MouseUp(object sender, MouseEventArgs e)
        {

        }

        private void gMapControl1_MouseDown(object sender, MouseEventArgs e)
        {

        }

        private void gMapControl1_MouseMove(object sender, MouseEventArgs e)
        {

        }

        private void gMapControl1_OnMapTypeChanged(MapType type)
        {

        }

        private void gMapControl1_OnMapZoomChanged()
        {

        }

        private void gMapControl1_OnMarkerClick(GMapMarker item, MouseEventArgs e)
        {

        }

        private void gMapControl1_OnTileLoadComplete(long ElapsedMilliseconds)
        {

        }

        private void gMapControl1_OnTileLoadStart()
        {

        }
    }
}

Answer 1

尝试添加：

using Gmap.NET.MapProviders;

软件它可以解决你的问题，因为我确实有类似的东西。 另外，检查是否已将Gmap.WindowsForms dll添加到IDE工具箱中！