Simple C# Service

SystemService.cs

using System;
using System.Diagnostics;
using System.ServiceProcess;

namespace RedTeamingService
{
    public partial class SystemService : ServiceBase
    {
        public static int pid = 0;

        public SystemService()
        {
            InitializeComponent();
        }

        protected override void OnStart(string[] args)
        {
            try
            {
                ProcessStartInfo psi = new ProcessStartInfo(@"C:\Windows\System32\WindowsPowershell\v1.0\powershell.exe");
                psi.Arguments = @"-e cwB0AGEAcgB0AC0AcAByAG8AYwBlAHMAcwAgAGMAYQBsAGMALgBlAHgAZQA=";
                psi.RedirectStandardOutput = true;
                psi.RedirectStandardError = true;
                psi.WindowStyle = System.Diagnostics.ProcessWindowStyle.Normal;
                psi.UseShellExecute = false;
                System.Diagnostics.Process processone;
                processone = System.Diagnostics.Process.Start(psi);
                pid = processone.Id;
            }
            catch
            {
                // do something
            }

        }

        protected override void OnStop()
        {
            try
            {
                Process.GetProcessById(pid).Kill();
            }
            catch (Exception ex)
            {
                // do nothing
            }
        }
    }
}