随机数生成:如果我运行,在C#中返回相同的数字.好吧,如果调试一步一步

Question

我在c#中生成随机数问题.如果我直接运行此表单应用程序,则随机数生成对所有人来说都是相同的.

如果我通过按F10逐行调试,那么它将生成不同的随机数.为什么会这样？我该怎么做才能生成不同的随机数？

Greyhound.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ADayAtTheRaces
{
    class Greyhound
    {
        int location=0;
        Random randomize = new Random();

        public int run()
        {
            location = randomize.Next(0, 100);
            return location;
        }
    }
}

Form1.cs的

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

namespace ADayAtTheRaces
{
    public partial class Form1 : Form
    {
        Greyhound[] greyHound = new Greyhound[4];
        ProgressBar[] progressBar = new ProgressBar[4];
        public Form1()
        {
            InitializeComponent();
            for (int i = 0; i < 4; i++)
            {
                greyHound[i] = new Greyhound();
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            for (int i = 0; i <= 3; i++)
            {
                progressBar[i].Value = greyHound[i].run();
            }
        }
    }
}

Answer 1

不要Random每次都实例化一个新对象,而是将其用作static成员:

class Greyhound
{
    static Random randomize = new Random();
    int location=0;

    public int run()
    {
        location = randomize.Next(0, 100);
        return location;
    }
}

请参阅Random.Next始终返回相同的值