ComboBox nesnesinden seçilen cihazdan ses gelirse example.exe'yi nasıl kapatırım

C#
1

NAudio kitaplığı kullanılarak bir ComboBox nesnesinde korunan ses aygıtlarından birini seçerken, seçili aygıttan ses algılanırsa example.exe’yi kapatırım?
waveIn.DeviceNumber = selectedDevice.DeviceNumber; // hata kısmı bu konun sonundaki (DeviceNumber) çalışmasına engel oluyor bunu nasıl düzeltebilirim?

using NAudio.CoreAudioApi;

private void Form1_Load(object sender, EventArgs e)
{
    MMDeviceEnumerator enumerator = new MMDeviceEnumerator();
    MMDeviceCollection devices = enumerator.EnumerateAudioEndPoints(DataFlow.Render, DeviceState.Active);

    foreach (MMDevice device in devices)
    {
        comboBox1.Items.Add(device.FriendlyName);
    }
}

private MMDevice selectedDevice;
private WaveIn waveIn;
private bool soundDetected = false;

private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
    selectedDevice = new MMDeviceEnumerator().EnumerateAudioEndPoints(DataFlow.Render, DeviceState.Active)[comboBox1.SelectedIndex];
    waveIn = new WaveIn();
    waveIn.DeviceNumber = selectedDevice.DeviceNumber; //error selectedDevice.DeviceNumber;(DeviceNumber)
    waveIn.WaveFormat = new WaveFormat(44100, 1);
    waveIn.DataAvailable += OnDataAvailable;
    waveIn.StartRecording();
    timer1.Start();
}

private void OnDataAvailable(object sender, WaveInEventArgs e)
{
    float max = 0;
    byte[] buffer = e.Buffer;

    for (int index = 0; index < e.BytesRecorded; index += 2)
    {
        short sample = (short)((buffer[index + 1] << 8) | buffer[index + 0]);
        float sample32 = sample / 32768f;
        if (sample32 < 0) sample32 = -sample32;
        if (sample32 > max) max = sample32;
    }

    if (max > 0.5f)
    {
        soundDetected = true;
    }
}

private void timer1_Tick(object sender, EventArgs e)
{
    if (soundDetected)
    {
        soundDetected = false;
        timer1.Stop();
        waveIn.StopRecording();
        waveIn.Dispose();
        this.Close();
    }
}