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Random rd = new Random();

int i = rd.Next();

for (int i = 0; i < 10; i++)

{

    Random rd = new Random();　　//無參即為使用系統時鐘為種子

    Console.WriteLine(rd.Next().ToString());

}

Random random = new Random();  

for (int i = 0; i < 5; i++) 

{     

    Console.WriteLine(random.Next()); 

}

Console.WriteLine(Guid.NewGuid().ToString());

RNGCryptoServiceProvider csp = new RNGCryptoServiceProvider();

byte[] byteCsp = new byte[10];

csp.GetBytes(byteCsp);

Console.WriteLine(BitConverter.ToString(byteCsp));

for (int i = 0; i < 10; i++)

{

    RNGCryptoServiceProvider csp = new RNGCryptoServiceProvider();

    byte[] byteCsp = new byte[10];

    csp.GetBytes(byteCsp);

    Console.WriteLine(BitConverter.ToString(byteCsp));

}