C#使用 RNGCryptoServiceProvider 生成隨機數

一個簡單的方法，但不夠可靠

static void Main(string[] args)
{
    // code from DevCurry.com
    byte[] randomBytes = new byte[4];
    Random rando = new Random();
    rando.NextBytes(randomBytes);
    foreach (byte byteValue in randomBytes)
        Console.Write("{0, 4}", byteValue);

    Console.ReadLine();
}

可靠的方法

static void Main(string[] args)
{
    // code from DevCurry.com
    byte[] randomBytes = new byte[4];
    RNGCryptoServiceProvider rngCrypto =
    new RNGCryptoServiceProvider();

    rngCrypto.GetBytes(randomBytes);
    Int32 rngNum = BitConverter.ToInt32(randomBytes, 0);

    Console.WriteLine(rngNum);

    Console.ReadLine();
}