Don't get mad, I'm new! Need help D:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CMDopen
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine("Hello User");
            Console.WriteLine("to start the ping-test, press enter");
            Console.ReadLine();
            Console.Write("ping google.de -t");
        }
    }
}

namespace SendKey1
{
    public class Send
    {
        public static void main(string[] args)
        {
            Send.send("{ENTER");
        }
    }
}