System.Uri.Uri.HexEscape C# (CSharp) Method

		public static string HexEscape (char character) 
		{
			if (character > 255) {
				throw new ArgumentOutOfRangeException ("character");
			}
			
			return "%" + hexUpperChars [((character & 0xf0) >> 4)] 
			           + hexUpperChars [((character & 0x0f))];
		}