use gmaps long/lat values in winforms

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C#

WinForms

Google-Maps

hi,
i am newbie at using google maps in a winforms.
i would like help:
i have gmaps in my program but i want the coordinates to appear in the long/lat textbox when i click anywhere on the map. and the user can use that same textbox to add their own long/lat coordinates and the map should go to that location.

internal void LoadMap()
        {
            gMapVenues.MapProvider = GMap.NET.MapProviders.GMapProviders.GoogleMap;
            gMapVenues.MinZoom = 3;
            gMapVenues.MaxZoom = 17;
            gMapVenues.Zoom = 4;
            gMapVenues.Manager.Mode = GMap.NET.AccessMode.ServerAndCache;
            gMapVenues.Position = new PointLatLng(-33.91530000, 18.42560000);

            GMapOverlay overlayOne = new GMapOverlay("OverlayOne");
            gMapVenues.Overlays.Add(overlayOne);

        }