Encode and decode strings with C#

Codification.cs

using System;
					
public class Program
{
	/**
	* You can this code at https://dotnetfiddle.net/uH4B69
	*/
	public static void Main()
	{
		string text = "Hello World!";
		string encoded = Encode(text);
		string decoded = Decode(encoded);
		Console.WriteLine($"text: {text}");
		Console.WriteLine($"encoded: {encoded}");
		Console.WriteLine($"decoded: {decoded}");
	}
	
	public static string Encode(string stringToEncode)
	{
		byte[] encoded = System.Text.Encoding.Unicode.GetBytes(stringToEncode);
		string result = Convert.ToBase64String(encoded);
		return result;
	}
	
	public static string Decode(string stringToDecode)
	{
		byte[] decoded = Convert.FromBase64String(stringToDecode);
		string result = System.Text.Encoding.Unicode.GetString(decoded);
		return result;
	}
}