Как запустить powershell с аргументами

ProcessStartInfo processInfo6 = new ProcessStartInfo();
processInfo6.FileName = "PowerShell.exe";
processInfo6.Arguments = @"Get-AppXPackage *WindowsAlarms* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register ""$($_.InstallLocation)\AppXManifest.xml""}";
processInfo6.UseShellExecute = true;
processInfo6.Verb = "runas"; // от имени администратора
processInfo6.WindowStyle = ProcessWindowStyle.Hidden; // скрыть окно
Process pr6 = new Process();
 
    pr6 = Process.Start(processInfo6);

PowerShell ps = PowerShell.Create();
ps.AddScript("Get-AppxPackage *Microsoft.WindowsAlarms_1.0.188.0_x64__8wekyb3d8bbwe* -AllUsers | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register \"$($_.InstallLocation)\\AppxManifest.xml\"}");
foreach (PSObject result in ps.Invoke())
{
    Console.WriteLine(result.ToString());
}
ps.Commands.Clear();
ps.AddCommand("Get-Process");
ICollection<PSObject> results = ps.Invoke();

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
 
namespace CMDHOOK
{
    public partial class Form1 : Form
    {
       
 
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindowEx(IntPtr parentHandle, IntPtr childAfter, string lclassName, string windowTitle);
        [DllImport("user32.dll", SetLastError = true)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
 
        [DllImport("kernel32.dll", SetLastError = true)]
        static extern IntPtr OpenProcess(uint dwDesiredAccess, bool bInheritHandle, int dwProcessId);
 
        [DllImport("kernel32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool CloseHandle(IntPtr hObject);
 
        [DllImport("kernel32.dll", SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool TerminateProcess(IntPtr hProcess, uint uExitCode);
        public Form1()
        {
            InitializeComponent();
        }
 
        private void Form1_Load(object sender, EventArgs e)
        {
 
        }
        public delegate void MyDelegate(object o, EventArgs e);
        public event MyDelegate ChildProcessEventHandler;
        private StringBuilder output = new StringBuilder();
        int lineCount = 0;
        private void button1_Click(object sender, EventArgs e)
        {
            System.Security.SecureString ssPwd = new System.Security.SecureString();
            Process myProcess = new Process();
            myProcess.StartInfo.FileName = "cmd ";
            myProcess.StartInfo.UserName = "Zevs";
            myProcess.StartInfo.Arguments = "/c help";
            ssPwd.AppendChar('1');
            myProcess.StartInfo.Password = ssPwd;
            myProcess.StartInfo.UseShellExecute = false;
            myProcess.StartInfo.CreateNoWindow = true;
            myProcess.StartInfo.RedirectStandardOutput = true;
            myProcess.StartInfo.RedirectStandardError = true;
            myProcess.StartInfo.StandardOutputEncoding = Encoding.GetEncoding(866);
 
            string str = string.Empty;
            
            myProcess.OutputDataReceived += new DataReceivedEventHandler((sendere, ee) =>
            {
                
                if (!String.IsNullOrEmpty(ee.Data))
                {
                    lineCount++;
                    output.Append("\n[" + lineCount + "]: " + ee.Data);
                    
                }
            });
 
            myProcess.Start();
            myProcess.BeginOutputReadLine();
            myProcess.WaitForExit();
            str = output.ToString();
            
            
            richTextBox1.AppendText("CMD ID - " + myProcess.Id + ".  CMD дискриптор - " + OpenProcess(0xFFFF, false, myProcess.Id));
            richTextBox1.Invoke(new Action(() => richTextBox1.AppendText("" +  str)));
 
            
 
        }
    }
}