How to record voice from microphone? 
using Microsoft.VisualBasic.Devices;
using Microsoft.VisualBasic;
using System.Runtime.InteropServices;
تابع API زير را به كلاس برنامه بيافزاييد :
[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);
3  دكمه با نامهاي زير بسازيد :
 در زمان كليك شدن دكمه Record بنويسيد :
// record from microphone
mciSendString("open new Type waveaudio Alias recsound", "", 0, 0);
mciSendString("record recsound", "", 0, 0);
 و هنگام كليك شدن دكمه SaveStop 
// stop and save
mciSendString("save recsound c:\\record.wav", "", 0, 0);
mciSendString("close recsound ", "", 0, 0);
Computer c = new Computer();
c.Audio.Stop();
و براي دكمه Read نيز :
Computer computer = new Computer();
computer.Audio.Play("c:\\record.wav", AudioPlayMode.Background);
منبع : http://www.dotnetspider.com/resource...icrophone.aspx