unity 讀取文件並轉換爲byte數組

public static byte[] AuthGetFileData(string fileUrl)
    {
        FileStream fs = new FileStream(fileUrl, FileMode.Open, FileAccess.Read);
        byte[] buffur = new byte[fs.Length];

        fs.Read(buffur, 0, buffur.Length);
        fs.Close();
        return buffur;
    }