save dialog box for wav file

Stream myStream;
SaveFileDialog saveFileDialog1 = new SaveFileDialog();

saveFileDialog1.Filter = "wav (*.wav)|*.wav|All files (*.*)|*.*";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;

if (saveFileDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{           
    if ((myStream = saveFileDialog1.OpenFile()) != null)
    {
        // Code to write the stream goes here.
        myStream.Write(record.wav);
        myStream.Close();
    }
}
mciSendString("save recsound c:\\record.wav", "", 0, 0);
mciSendString("close recsound ", "", 0, 0);
Computer c = new Computer();
c.Audio.Stop();