Callbacks in Csharp like CommonJS style

CsharpCallback.cs

using System;
using System.Threading.Tasks;
					
public class Program
{
	public static void Main()
	{
		ReadFile("", (err, data) => {
		
			if(err != null) {
				Console.WriteLine("Err");
				return;
			}
			
			Console.WriteLine("Data " + data);
				
		});
		Console.WriteLine("Hello World");
	}
	
	private static Task ReadFile(string path, Action<string, string> action) {

		var no = new Random().Next(0, 100);

		if (no % 2 == 0)
			action(null, "completed");
		else
			action("err", null);

		return default;
	}

}