C#准時器和隨機數。本站提示廣大學習愛好者:(C#准時器和隨機數)文章只能為提供參考,不一定能成為您想要的結果。以下是C#准時器和隨機數正文
.net.Frameword中供給了一個專門發生隨機數的類System.Random,此類默許情形下已被導入,編程進程中可以直接應用。我們曉得,盤算機其實不能發生完整隨機的數字,它生成的數字被稱為偽隨機數,它是以雷同的幾率從一組無限的數字當選取的,所選的數字其實不具有完整的隨機性,但就適用而言,其隨機水平曾經足夠了。
我們來看上面的例子
MainForm.cs
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; //using example3.RandomHelp; namespace example3 { public partial class MainForm : Form { Timer timer = new Timer(); int zheng; int shi; public MainForm() { InitializeComponent(); button1.Click+=button1_Click; button2.Click+=button2_Click; // if (textBox3.Text != null) // { // string m = textBox3.Text; } void timer_Tick(object sender, EventArgs e) { //throw new NotImplementedException(); // radioButton2_Click(null,null); // double r = (example3.RandomHelp.GetIntRandomNumber(int.Parse(textBox1.Text), int.Parse(textBox2.Text))); // string s = r.ToString(); // label4.Text = s; if (zheng == 1) { int r = (example3.RandomHelp.GetIntRandomNumber(int.Parse(textBox1.Text), int.Parse(textBox2.Text))); string s = r.ToString(); label4.Text = s; } if (shi == 2) { double r = (example3.RandomHelp.GetDoubleRandomNumber(int.Parse(textBox1.Text), int.Parse(textBox2.Text))); string s = r.ToString(); label4.Text = s; } } //整數 private void radioButton1_CheckedChanged(object sender, EventArgs e) { RadioButton r = sender as RadioButton; if (r.Checked == true) { zheng = 1; } } //實數 private void radioButton2_CheckedChanged(object sender, EventArgs e) { RadioButton r = sender as RadioButton; if (r.Checked == true) { shi = 2; } } //開端 private void button1_Click(object sender, EventArgs e) { timer.Interval = int.Parse(textBox3.Text); //timer.Interval = 500; timer.Tick += timer_Tick; timer.Start(); } //停滯 private void button2_Click(object sender, EventArgs e) { timer.Stop(); } } }
RandomHelp.cs
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; //using System.Windows.Forms.Timer; namespace example3 { class RandomHelp { public static int GetIntRandomNumber(int min,int max) { Random r=new Random(); int ran=r.Next(min, max + 1); return ran; } //很不錯的算法 public static double GetDoubleRandomNumber(int min,int max) { Random r = new Random(); //很不錯的算法 double m=r.NextDouble() * max; double n = r.NextDouble() * min; if(m-n>2.0) return m; else return n+3.0; } } }
以上所述就是本文的全體內容了,願望年夜家可以或許愛好。