Imports NETGeographicLib Module example_Geohash Sub Main() Try ' Sample forward calculation Dim lat As Double = 57.64911, lon = 10.40744 ' Jutland (the wikipedia example) Dim ghash As String Dim maxlen As Integer = Geohash.GeohashLength(0.00001) For len As Integer = 0 To maxlen Geohash.Forward(lat, lon, len, ghash) Console.WriteLine(ghash) Next ' Sample reverse calculation ghash = "u4pruydqqvj" For i As Integer = 0 To ghash.Length - 1 Dim len As Integer Geohash.Reverse(ghash.Substring(0, i), lat, lon, len, True) Console.WriteLine(String.Format("Length: {0} Latitude: {1} Longitude: {2}", len, lat, lon)) Next Catch ex As GeographicErr Console.WriteLine(String.Format("Caught exception: {0}", ex.Message)) End Try End Sub End Module