首先添加命名空间和相关的代码，如下：

using System.Runtime.InteropServices; [DllImport("winmm.dll", EntryPoint = "mciSendString", CharSet = CharSet.Auto)]        private static extern int mciSendString(         string lpstrCommand,         string lpstrReturnString,         int uReturnLength,         int hwndCallback        );        private static void mciSendString(String cmd)        {            mciSendString(cmd, "", 0, 0);        }        private static void StartRecord()        {            mciSendString("close movie");            mciSendString("open new type WAVEAudio alias movie");            mciSendString("record movie");        }        private static void StopRecord(string filename)        {            mciSendString("stop movie");            mciSendString("save movie " + filename);            mciSendString("close movie");        }

 然后直接调用 StartRecord()，开始录音 StopRecord()：停止录音