GMap.NET.WindowsForms.dll et Google API Javascript

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C#

Google-Maps

Hello All,
This is the first time I am posting on this site, I tried to correct my message to be more clear, I need your help, let me explain my problem, my goal is to locate service stations in a city and see their markers with info bubble containing private information

I used : gmapControl en ajoutant GMap.NET.WindowsForms.dll

- The horizontal zoom bar is not visible
- When I seek a point, I could not choose the most adequate zoom to display maximum detail on item sought

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Windows.Media.Imaging;
using GMap.NET;
using GMap.NET.MapProviders;
using GMap.NET.WindowsForms;
using GMap.NET.WindowsForms.Markers;
using System.Windows.Media;
 
 
namespace Région_Kenitra_Services
{
    public partial class FMainStations : Form
    {
        GMapOverlay overlayOne;
 
        public FMainStations()
        {
            InitializeComponent();
            cmbStation.SelectedIndex = 4;
        }
 
 
 
        private void FMainStations_Load(object sender, EventArgs e)
        {
            gMap.MapProvider = GMap.NET.MapProviders.GoogleMapProvider.Instance;
            GMap.NET.GMaps.Instance.Mode = GMap.NET.AccessMode.ServerAndCache;
            gMap.SetCurrentPositionByKeywords("K, M");
 
            gMap.CanDragMap = true;
            gMap.DragButton = MouseButtons.Left;
            //gMap.Zoom = gMap.MinZoom + 1;
            gMap.Dock = System.Windows.Forms.DockStyle.Fill;
            gMap.MouseWheelZoomType = MouseWheelZoomType.MousePositionAndCenter;
 
            //ajout des overlay
            overlayOne = new GMapOverlay(gMap, "OverlayOne");
            //ajout de Markers
            overlayOne.Markers.Add(new GMap.NET.WindowsForms.Markers.GMapMarkerCross
                (new PointLatLng(34.3252919244273, -6.5533447265635)));
 
 
            //ajout de overlay à la map
            gMap.Overlays.Add(overlayOne);
            gMap.ZoomAndCenterMarkers(overlayOne.Id);
 
         }
 
        private void gMap_MouseDoubleClick(object sender, MouseEventArgs e)
        {
            double lat = 0,lng = 0 ;
 
            if (e.Button == System.Windows.Forms.MouseButtons.Left)
            {
                 lat = gMap.FromLocalToLatLng(e.X, e.Y).Lat;
                 lng = gMap.FromLocalToLatLng(e.X, e.Y).Lng;
            }
            MessageBox.Show(("Point : "+lat+"/"+lng));
        }
 
        private void btnImg_Click(object sender, EventArgs e)
        {/*
            try
            {
                ImageSource img = gMap.ToImageSource();
                PngBitmapEncoder en = new PngBitmapEncoder();
                en.Frames.Add(BitmapFrame.Create(img as BitmapSource));
 
                Microsoft.Win32.SaveFileDialog dlg = new Microsoft.Win32.SaveFileDialog();
                dlg.FileName = "GMap.NET Image"; // Default file name
                dlg.DefaultExt = ".png"; // Default file extension
                dlg.Filter = "Image (.png)|*.png"; // Filter files by extension
                dlg.AddExtension = true;
                dlg.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyPictures);
 
                // Show save file dialog box
                bool? result = dlg.ShowDialog();
 
                // Process save file dialog box results
                if (result == true)
                {
                    // Save document
                    string filename = dlg.FileName;
 
                    using (System.IO.Stream st = System.IO.File.OpenWrite(filename))
                    {
                        en.Save(st);
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }*/
        }
 
        private void btnOK_Click(object sender, EventArgs e)
        {
            gMap.MaxZoom = 30;
 
            string adresse1, adresse2, adresse3, adresse4 = "";
            double lat1, lat2, lat3, lat4 = 0;
            double lng1, lng2, lng3, lng4 = 0;
 
            adresse1 = "Station 1 \n Hôtel La Rotonde, \n Rue Mohamed Diouri,\n Kénitra, Maroc";
            lat1 = 34.2563970;
            lng1 = -6.5827260;
 
            
            overlayOne.Markers.Clear();
            MarkerTooltipMode mode = MarkerTooltipMode.Always;
            System.Drawing.Brush ToolTipBackColor = new SolidBrush(System.Drawing.Color.Coral);
 
            if (cmbStation.SelectedIndex.ToString() == "0")
            {
                gMap.Position = new PointLatLng(lat1, lng1);
                GMapMarkerGoogleRed marker = new GMapMarkerGoogleRed(gMap.Position);
 
                marker.ToolTip = new GMap.NET.WindowsForms.ToolTips.GMapBaloonToolTip(marker);
                marker.ToolTip.Format.Alignment = StringAlignment.Center;
                marker.ToolTipMode = mode;
                marker.ToolTip.Fill = ToolTipBackColor;
                marker.ToolTipText = adresse1.ToString();
                overlayOne.Markers.Add(marker);
                gMap.Overlays.Add(overlayOne);
 
            }
 
           
        }
    }
}

I need your help ..pls correct me