private String ZoneForThailandMgrs(String value)
{
Int32 zone = 0;
Char eastingChar = value[0];
if ((eastingChar >= 'A') && (eastingChar <= 'H'))
{
zone = 49;
}
else if ((eastingChar >= 'J') && (eastingChar <= 'R'))
{
zone = 47;
}
else if ((eastingChar >= 'S') && (eastingChar <= 'Z'))
{
zone = 48;
}
Char northingChar = value[1];
String northingCharacters = UtmPoint.MgrsNorthingChars(zone);
Int32 northingCount = northingCharacters.IndexOf(northingChar);
Char zoneChar;
if ((northingCount > 17) | (northingCount == 0))
{
zoneChar = 'Q';
}
else if (northingCount > 8)
{
zoneChar = 'P';
}
else
{
zoneChar = 'N';
}
String result = zone.ToString() + zoneChar;
return(result);
}