when I input a lon/lat and show tha Map in the second time the imgLayer will show twice. (I just show one image in the map)
How to remove the image Layer?
Dim imgLayer As New InMemoryFeatureLayer()
imgLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle.PointType = PointType.Bitmap
imgLayer.ZoomLevelSet.ZoomLevel01.DefaultPointStyle.Image = New GeoImage("D:\GIS\D1.gif")
imgLayer.ZoomLevelSet.ZoomLevel01.ApplyUntilZoomLevel = ApplyUntilZoomLevel.Level20
imgLayer.InternalFeatures.Add("Car", New Feature(New PointShape(longitude, latitude)))
Dim carOverlay As New LayerOverlay()
If Not carOverlay.Layers.Contains("imgLayer") Then
carOverlay.Layers.Add("imgLayer", imgLayer)
Else
carOverlay.Layers.Remove("imgLayer")
carOverlay.Layers.Add("imgLayer", imgLayer)
End If
WinformsMap1.Overlays.Add(carOverlay)
Dim rectangle = New RectangleShape(longitude - 0.01, latitude + 0.001, longitude + 0.01, latitude - 0.001)
WinformsMap1.CurrentExtent = rectangle
WinformsMap1.Refresh()