随机数演示(窗体应用程序)
新建窗体应用程序(如下),新建控件label1,label2,label3,label4,label5,textBOX1,textBOX2,button1,button2
label1的Text属性改为“随机数演示”
label2的Text属性改为“最大值”
label3的Text属性改为“最小值”
label4的Text属性改为“生成随机数”
button1的Text属性改为“确定”
button1的Text属性改为“退出”
完整代码:
1 using System; 2 using System.Collections.Generic; 3 using System.ComponentModel; 4 using System.Data; 5 using System.Drawing; 6 using System.Linq; 7 using System.Text; 8 using System.Threading.Tasks; 9 using System.Windows.Forms; 10 11 namespace WindowsFormsApplication2 12 { 13 public partial class Form1 : Form 14 { 15 public Form1() 16 { 17 InitializeComponent(); 18 } 19 20 private void button1_Click(object sender, EventArgs e)//确定按钮代码 21 { 22 try 23 { 24 int num1 = Convert.ToInt32(textBox1.Text); 25 int num2 = Convert.ToInt32(textBox2.Text); 26 Random r = new Random(); 27 int i = r.Next(num2, num1+1); 28 label5.Text = Convert.ToString(i); 29 } 30 catch 31 { 32 MessageBox.Show("请输入整数"); 33 } 34 } 35 36 private void button2_Click(object sender, EventArgs e)//退出按钮代码 37 { 38 Application.Exit(); 39 } 40 } 41 }