// By Ream Lim, [singachea(at)gmail.com]
// Version: 1.0
// Date: January, 2012
This is a simple (perhaps minimal for getting the coordinates and addresses) api to call onemap sg written in C# . I do this because I couldn't find available library in C#, and it was annoying to deal with weird Singapore coordinates system (SVY21) from onemap. The below is what you can do with this simple library:
* Convert back and forth between Singapore Geo System (SYV21: X, Y / Easting, Northing) and Google Map (WGS84: Longitude, Latitude)
* Retrieve the onemap token from a key
* Retrieve coordinates from onemap from search key
* Retrieve address from onemap from search key
HOW TO USE THIS LIBRARY
-----------------------
1. Add both .dll files (Utils.dll and Systems.Web.Extension.dll) into your project reference
2. Use it :P
EXAMPLE
-------
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using ReamSGOneMap.Utils;
namespace ReamSGOneMap
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("----------------------- CONVERT (X,Y) VS (LONGITUDE, LATITUDE) -----------------------");
GeoCoordinates geoXY = new GeoCoordinates(29535.0995308659, 28912.1833258747, false);
Console.WriteLine("Longitude: {0}, Latitude: {1}", geoXY.Longitude, geoXY.Latitude);
GeoCoordinates geoLL = new GeoCoordinates(103.847112019776, 1.2777459830532, true);
Console.WriteLine("X: {0}, Y: {1}", geoLL.X, geoLL.Y);
Console.WriteLine();
Console.WriteLine("----------------------- GET TOKEN FROM A KEY -----------------------");
string key = "qo/s2TnSUmfLz+32CvLC4RMVkzEFYjxqyti1KhByvEacEdMWBpCuSSQ+IFRT84QjGPBCuz/cBom8PfSm3GjEsGc8PkdEEOEr";
var token = OneMapToken.GetTokenFromAccessKey(key);
Console.WriteLine("Key: {0} --> Token: {1}", key, token);
Console.WriteLine();
Console.WriteLine("----------------------- GET COORDINATES FROM SEARCH KEY -----------------------");
string samplePostalCode = "081004";
var coordinates = OneMapHelper.GetCooridnates(token, samplePostalCode);
Console.WriteLine("Longitude: {0}, Latitude: {1}", coordinates.Longitude, coordinates.Latitude);
Console.WriteLine("X: {0}, Y: {1}", coordinates.X, coordinates.Y);
Console.WriteLine();
Console.WriteLine("----------------------- GET GEO-ADDRESS FROM SEARCH KEY -----------------------");
var geoAddress = OneMapHelper.GetGeoAddress(token, samplePostalCode);
Console.WriteLine("HBRN: {0}, Building name: {1}, Postal code: {2}", geoAddress.HBRN, geoAddress.BLDG_NAME, geoAddress.PostalCode);
Console.WriteLine(geoAddress.GetAddressString());
Console.WriteLine();
Console.WriteLine("----------------------- USING INSTANCE STYLE -----------------------");
// you can also use object
var geoObject = new OneMapHelper(token);
var coor = geoObject.GetCooridnates(samplePostalCode);
Console.WriteLine("Longitude: {0}, Latitude: {1}", coor.Longitude, coor.Latitude);
var addr = geoObject.GetGeoAddress(samplePostalCode);
Console.WriteLine(addr.GetAddressString());
}
}
}
Oh yeah, I also have Google Map api written in C# as well. If you want it contact me [singachea(at)gmail.com]