C#

string s1 = "teststring";
string s2 = s1;
Console.WriteLine(s1 + " " + s1.GetHashCode());
Console.WriteLine(s2 + " " + s2.GetHashCode());

s2 = "changed";
Console.WriteLine(s1 + " " + s1.GetHashCode());
Console.WriteLine(s2 + " " + s2.GetHashCode());

ProcessStartInfo psi = new ProcessStartInfo(@"C:\Windows\Explorer.exe");//args[0]);
                psi.UseShellExecute = false;

psi.Domain = userParts[0];
psi.UserName = userParts[1];
psi.Password = password;

Process.Start(psi);

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.VisualBasic.Devices;  //My problem is here
using Microsoft.VisualBasic;
using System.Runtime.InteropServices;

namespace WindowsApplication1
{
   
    public partial class Form1 : Form
    {

        [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
        private static extern int mciSendString(string lpstrCommand, string lpstrReturnString, int uReturnLength, int hwndCallback);
    
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void Record_Click(object sender, EventArgs e)
        {
            // record from microphone
            mciSendString("open new Type waveaudio Alias recsound", "", 0, 0);
            mciSendString("record recsound", "", 0, 0);
        }

        private void SaveStop_Click(object sender, EventArgs e)
        {
            // stop and save
            mciSendString("save recsound c:\\record.wav", "", 0, 0);
            mciSendString("close recsound ", "", 0, 0);
            Computer c = new Computer();
            c.Audio.Stop();
        }

        private void Read_Click(object sender, EventArgs e)
        {
            Computer computer = new Computer();
            computer.Audio.Play("c:\\record.wav", AudioPlayMode.Background);
        }

        
    }
}