GetProcesses

using System;
using System.IO;
using System.Diagnostics;
public class Program
{
    public static void Main()
    {
        Process[] processOnComputer = Process.GetProcesses();
     
        foreach (Process p in processOnComputer)
        {
            Console.WriteLine(p.ToString());
        }
        Console.WriteLine(processOnComputer.Length);
    }
}