ASP.NET - Convertir XML a Base64

using System;

using System.IO;

using System.Text;

public class Program

{

	public static void Main()

	{

		var cadenaBase64=Convert.ToBase64String(Encoding.UTF8.GetBytes(File.ReadAllText("Ruta a archivo.xml")));

		Console.WriteLine(cadenaBase64);

	}

}