c#NAudio 录音功能实现

在网上找了很多类似录音教程效果都不好，或根本不能录音，代码由网上借鉴修改（完整实现录音播放功能）

1.首先新建引用类  RecordController

public class RecordController
{
public WaveIn mWavIn;
public WaveFileWriter mWavWriter;

/// <summary>
/// 开始录音
/// </summary>
/// <param name="filePath"></param>
public void StartRecord(string filePath)
{
mWavIn = new WaveIn();
mWavIn.DataAvailable += MWavIn_DataAvailable;
// mWavIn.RecordingStopped += MWavIn_RecordingStopped; 有冲突
mWavWriter = new WaveFileWriter(filePath, mWavIn.WaveFormat);
mWavIn.StartRecording();
}

/// <summary>
/// 停止录音
/// </summary>
public void StopRecord()
{
mWavIn?.StopRecording();
mWavIn?.Dispose();
mWavIn = null;
mWavWriter?.Close();
mWavWriter = null;
}

//这个方法在调用关闭时会有冲突

private void MWavIn_RecordingStopped(object sender, StoppedEventArgs e)
{
//mWavIn?.Dispose();
//mWavIn = null;
//mWavWriter?.Close();
//mWavWriter = null;
}

private void MWavIn_DataAvailable(object sender, WaveInEventArgs e)
{
mWavWriter.Write(e.Buffer, 0, e.BytesRecorded);
int secondsRecorded = (int)mWavWriter.Length / mWavWriter.WaveFormat.AverageBytesPerSecond;
}
}

2.在主界面引用  RecordController record = new RecordController();

/// <summary>
/// 耳机sidetone测试
/// </summary>
/// <param name="i"></param>
public void Sidetone(int i)
{
string[] row = getlistviewitem(i);
record.StartRecord("e:\rec.wav");
if (MessageBox.Show("正在录音，点击是播放录音", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
{
record.StopRecord();
ErrorFlag = false;
row[6] = "FAIL";
}
else
{
record.StopRecord();
string path = "e:\rec.wav";//.wav音频文件路径
System.Media.SoundPlayer player = new System.Media.SoundPlayer(path);
player.Play();

if (MessageBox.Show("是否有录音", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.No)
{
ErrorFlag = false;
row[6] = "FAIL";
}
else
{
ErrorFlag = true;
row[5] = "OK";
row[6] = "PASS";
}
}
listupdate(row, i);
}

完成代码后测试是能正常录音