C#中System.Random类的NextBytes(Byte [])方法用于用随机数填充指定字节数组的元素。此方法将字节数组作为参数,并用随机数填充它。
句法:
public virtual void NextBytes (byte[] buffer);
此处, buffer是包含随机数的字节数组。
异常:如果缓冲区为null,则此方法将提供ArgumentNullException 。
下面的程序说明了NextBytes()方法的用法:
范例1:
// C# program to illustrate the
// use of Random.NextBytes Method
using System;
class GFG {
// Driver code
public static void Main()
{
// Instantiate random number generator
Random rand = new Random();
// Instantiate an array of byte
Byte[] b = new Byte[10];
rand.NextBytes(b);
// Print random numbers in the byte array
Console.WriteLine("Printing random numbers"+
" in the byte array");
for (int i = 0; i < 10; i++)
Console.WriteLine("{0} -> {1}", i, b[i]);
}
}
输出:
Printing random numbers in the byte array
0 -> 63
1 -> 166
2 -> 5
3 -> 212
4 -> 114
5 -> 94
6 -> 161
7 -> 4
8 -> 226
9 -> 46
范例2:
// C# program to illustrate the
// use of Random.NextBytes Method
using System;
class GFG {
// Driver code
public static void Main()
{
// Instantiate random number generator
Random rand = new Random();
// Instantiate an array of byte
Byte[] b = new Byte[10];
rand.NextBytes(b);
// Print random numbers in the byte array
Console.WriteLine("Printing random numbers"+
" in the byte array");
foreach(byte byteValue in b)
Console.WriteLine("{0}", byteValue);
}
}
输出:
Printing random numbers in the byte array
98
68
221
160
179
78
172
129
121
179
参考:
- https://docs.microsoft.com/zh-cn/dotnet/api/system.random.nextbytes?view=netframework-4.7.2