C#生成不重复的数字,C#随机生成不重要的数字.

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            int[] timeran=GetRandomUnrepeatArray(0, 11, 10);
            MessageBox.Show(timeran[0].ToString());
            MessageBox.Show(timeran[1].ToString());
            MessageBox.Show(timeran[2].ToString());
            MessageBox.Show(timeran[3].ToString());
            MessageBox.Show(timeran[4].ToString());
            MessageBox.Show(timeran[5].ToString());
            MessageBox.Show(timeran[6].ToString());
            MessageBox.Show(timeran[7].ToString());
        }

        public int[] GetRandomUnrepeatArray(int minValue, int maxValue, int count)
        {
            Random rnd = new Random();
            int length = maxValue - minValue + 1;
            byte[] keys = new byte[length];
            rnd.NextBytes(keys);
            int[] items = new int[length];
            for (int i = 0; i < length; i++)
            {
                items[i] = i + minValue;
            }
            Array.Sort(keys, items);
            int[] result = new int[count];
            Array.Copy(items, result, count);
            return result;
        }

    }
}