How can I determine the length (i.e. duration) of a .wav file in C#?

Question

In the uncompressed situation I know I need to read the wav header, pull out the number of channels, bits, and sample rate and work it out from there: (channels) * (bits) *

Answer 1

i have tested blew code would fail,file formats are like "\\ip\dir\*.wav'

 public static class SoundInfo
   {
     [DllImport("winmm.dll")]
     private static extern uint mciSendString
     (
        string command,
        StringBuilder returnValue,
        int returnLength,
        IntPtr winHandle
     );

     public static int GetSoundLength(string fileName)
      {
        StringBuilder lengthBuf = new StringBuilder(32);

        mciSendString(string.Format("open \"{0}\" type waveaudio alias wave", fileName), null, 0, IntPtr.Zero);
        mciSendString("status wave length", lengthBuf, lengthBuf.Capacity, IntPtr.Zero);
        mciSendString("close wave", null, 0, IntPtr.Zero);

        int length = 0;
        int.TryParse(lengthBuf.ToString(), out length);

        return length;
    }
}

while naudio works

    public static int GetSoundLength(string fileName)
     {
        using (WaveFileReader wf = new WaveFileReader(fileName))
        {
            return (int)wf.TotalTime.TotalMilliseconds;
        }
     }`