public static void Play(string strFileName, int sign) { //Helpers1.PlaySound( strFileName, IntPtr.Zero, Helpers1.PlaySoundFlags.SND_FILENAME | Helpers1.PlaySoundFlags.SND_ASYNC ); //Helpers1 Helpers1=new Helpers1(); if (sign == 1) { Helpers1.PlaySound(strFileName, IntPtr.Zero, Helpers1.PlaySoundFlags.SND_FILENAME | Helpers1.PlaySoundFlags.SND_ASYNC | Helpers1.PlaySoundFlags.SND_NODEFAULT); } else { Helpers2.PlaySound(strFileName, IntPtr.Zero, Helpers2.PlaySoundFlags.SND_FILENAME | Helpers2.PlaySoundFlags.SND_ASYNC); } }