Path.GetExtension

static function GetExtension (path : String) : String

Description

Returns the extension component of the specified path string.

The extension returned includes the . character used to separate the extension from the rest of the path.

JavaScript
//Remember to import IO to make Path work.
import System.IO;

function Start () {
//This will print ".extension".
Debug.Log(Path.GetExtension("/Some/File/At/foo.extension"));
}

using System.IO;
using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
void Start() {
Debug.Log(Path.GetExtension("/Some/File/At/foo.extension"));
}
}

import System.IO
import UnityEngine
import System.Collections

class example(MonoBehaviour):

def Start():
Debug.Log(Path.GetExtension('/Some/File/At/foo.extension'))