c＃gmap.net谷歌筹码

c# gmap.net google marker

我做了一个使用gmap.net的应用程序。在地图上我有三个记号笔。现在我要做的是单击一个标记打开一个新表单，单击第二个标记打开另一个表单。这是代码：

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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.NET;
using GMap.NET.MapProviders;
using GMap.NET.WindowsForms;
using GMap.NET.WindowsForms.Markers;

namespace GMap
{
public partial class Form1 : Form
{
GMarkerGoogle marker;
GMapOverlay markerOverlay;
DataTable dt;
int Selekcija = 0;
double LatInicial = 43.1383292506958;
double LngInicial = 20.5198994278908;
double LatTehnicka = 43.1378458151015;
double LngTehnicka = 20.5214631557465;
double LatMedicinska = 43.1324426240355;
double LngMedicinska = 20.5122631788254;

public Form1()
{
InitializeComponent();
}

private void Form1_Load(object sender, EventArgs e)
{
dt = new DataTable();
dt.Columns.Add(new DataColumn("Opis", typeof(string)));
dt.Columns.Add(new DataColumn("Lat", typeof(double)));
dt.Columns.Add(new DataColumn("Long", typeof(double)));
//Ubacivanje podataka u tabelu
dt.Rows.Add("Gimnazija", LatInicial, LngInicial);
dt.Rows.Add("Tehnicka skola", LatTehnicka, LngTehnicka);
dt.Rows.Add("Medicinska skola", LatMedicinska, LngMedicinska);
dataGridView1.DataSource = dt;
//Vidljivost pojedinih kolona
dataGridView1.Columns[1].Visible = false;
dataGridView1.Columns[2].Visible = false;

gMapControl1.DragButton = MouseButtons.Left;
gMapControl1.CanDragMap = true;
gMapControl1.MapProvider = GMapProviders.GoogleMap;
gMapControl1.Position = new PointLatLng(LatInicial, LngInicial);
gMapControl1.MinZoom = 0;
gMapControl1.MaxZoom = 24;
gMapControl1.Zoom = 17;
gMapControl1.AutoScroll = true;
// Obelezivac
markerOverlay = new GMapOverlay("markers");
marker = new GMarkerGoogle(new PointLatLng(LatInicial, LngInicial),GMarkerGoogleType.green);
markerOverlay.Markers.Add(marker);
//marker.ToolTipMode = MarkerTooltipMode.Always;
marker.ToolTipText = string.Format("Gimnazija:
Latituda: {0}
Longituda: {1}", LatInicial, LngInicial);
gMapControl1.Overlays.Add(markerOverlay);

markerOverlay = new GMapOverlay("markers");
marker = new GMarkerGoogle(new PointLatLng(LatTehnicka, LngTehnicka), GMarkerGoogleType.green);
markerOverlay.Markers.Add(marker);
//marker.ToolTipMode = MarkerTooltipMode.Always;
marker.ToolTipText = string.Format("Tehnicka skola:
Latituda: {0}
Longituda: {1}", LatTehnicka, LngTehnicka);
gMapControl1.Overlays.Add(markerOverlay);

markerOverlay = new GMapOverlay("markers");
marker = new GMarkerGoogle(new PointLatLng(LatMedicinska, LngMedicinska), GMarkerGoogleType.green);
markerOverlay.Markers.Add(marker);
//marker.ToolTipMode = MarkerTooltipMode.Always;
marker.ToolTipText = string.Format("Medicinska skola:
Latituda: {0}
Longituda: {1}", LatMedicinska, LngMedicinska);
gMapControl1.Overlays.Add(markerOverlay);
}

private void button1_Click(object sender, EventArgs e)
{
dt.Rows.Add(txtOpis.Text, txtLatituda.Text, txtLongituda.Text);
}

private void SelekcijaSkole(object sender, DataGridViewCellMouseEventArgs e)
{
Selekcija = e.RowIndex;
txtOpis.Text = dataGridView1.Rows[Selekcija].Cells[0].Value.ToString();
txtLatituda.Text = dataGridView1.Rows[Selekcija].Cells[1].Value.ToString();
txtLongituda.Text = dataGridView1.Rows[Selekcija].Cells[2].Value.ToString();
marker.Position = new PointLatLng(Convert.ToDouble(txtLatituda.Text), Convert.ToDouble(txtLongituda.Text));
gMapControl1.Position = marker.Position;
}

private void gMapControl1_MouseDoubleClick(object sender, MouseEventArgs e)
{
double lat = gMapControl1.FromLocalToLatLng(e.X, e.Y).Lat;
double lng = gMapControl1.FromLocalToLatLng(e.X, e.Y).Lng;
txtLatituda.Text = lat.ToString();
txtLongituda.Text = lng.ToString();
marker.Position = new PointLatLng(lat, lng);
marker.ToolTipText = string.Format("Koordinate:
Latituda {0}
Longituda {1}", lat, lng);
}

private void button2_Click(object sender, EventArgs e)
{
dataGridView1.Rows.RemoveAt(Selekcija);
}

private void button3_Click(object sender, EventArgs e)
{
gMapControl1.MapProvider = GMapProviders.GoogleChinaSatelliteMap;
}

private void button4_Click(object sender, EventArgs e)
{
gMapControl1.MapProvider = GMapProviders.GoogleMap;
}

private void button5_Click(object sender, EventArgs e)
{
gMapControl1.MapProvider = GMapProviders.GoogleTerrainMap;
}

private void gMapControl1_OnMarkerClick(GMapMarker item, MouseEventArgs e)
{

}
}
}