bool rec_strt = false; static int incre = 1; //string save_path = "E:\\mic"+incre+".wav"; string save_path = Path.Combine(Environment.CurrentDirectory, @"Sent_files\", incre + ".wav"); [DllImport("winmm.dll", EntryPoint = "mciSendStringA", ExactSpelling = true, CharSet = CharSet.Ansi, SetLastError = true)] private static extern int record(string lpstrCommand, string lpstrReturnString, int uReturnLength, int hwndCallback); private void p_audio_Click(object sender, EventArgs e) { if (rec_strt...