Gmap.Net Marker at incorrect position but when the map is zoomed the marker goes to right place

Question

I\'ve a Windows Forms Application with a Gmap.Net controller, what I want to do is to add markers based on an outside sources that provides

Answer 1

It's because you're adding the marker to the overlay that has not been added to the map's overlays. Try to switch the order of the statements as follows:

gmap.Overlays.Add(markersOverlay);
markersOverlay.Markers.Add(marker);

Answer 2

add a first marker at lat,lon = 0,0. you can also make this marker invisible with setting its marker image as 1x1 pixel transparent png image. first element of the marker do this kind of wrong placement.