//Deletes file by his id public static bool DeleteFile(int id) { Comments.DeleteAllCommentsOfAudio(id); Likes.DeleteAllLikesOfAudio(id); string sql = string.Format("DELETE FROM AUDIO_FILE Where id={0}", id); Dal.ExecuteNonQuery(sql); if (File.Exists(HttpContext.Current.Server.MapPath("~/Data/") + id + ".mp3")) { File.Delete(HttpContext.Current.Server.MapPath("~/Data/") + id + ".mp3"); } return(true); }