WinForms多线程编程之多线程计算器

曾经终败给现在 2021-11-01 23:02 419阅读 0赞

编写多线程程序，实现输入两个数字X、Y，同时启动4个线程，分别计算加减乘除。并将结果显示出来，如图所示

![1.jpg][]

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;  
using System.Threading;

namespace EX01\_Calculator  
\{  
    public partial class Form1 : Form  
    \{  
        public Form1()  
        \{  
            InitializeComponent();  
        \}  
        double x, y;

private void button1\_Click(object sender, EventArgs e)  
        \{  
            //异常处理  
            try  
            \{  
                x = double.Parse(txtX.Text);  
                y = double.Parse(txtY.Text);  
            \}  
            catch (Exception ex)  
            \{  
                MessageBox.Show(ex.Message.ToString());

//定义线程  
            Thread\[\] thread = new Thread\[4\];

thread\[0\] = new Thread(new ThreadStart(NumAddition));  
            thread\[1\] = new Thread(new ThreadStart(NumSubstruction));  
            thread\[2\] = new Thread(new ThreadStart(NumMultiplication));  
            thread\[3\] = new Thread(new ThreadStart(NumDivision));

//开启线程  
            thread\[0\].Start();  
            thread\[1\].Start();  
            thread\[2\].Start();  
            thread\[3\].Start();

\}  
        //加法运算  
        void NumAddition()  
        \{  
            double num = x + y;  
            txtAddition.Text = num.ToString();  
        \}  
        //减法运算  
        void NumSubstruction()  
        \{  
            double num = x - y;  
            txtSubstruction.Text = num.ToString();  
        \}  
        //乘法运算  
        void NumMultiplication()  
        \{  
            double num = x \* y;  
            txtMultiplication.Text = num.ToString();  
        \}  
        //除法运算  
        void NumDivision()  
        \{  
            double num = x / y;  
            txtDivision.Text = num.ToString();  
        \}  
        private void Form1\_Load(object sender, EventArgs e)  
        \{  
            //不可编辑控件  
            txtAddition.Enabled = false;  
            txtDivision.Enabled = false;  
            txtMultiplication.Enabled = false;  
            txtSubstruction.Enabled = false;  
            //线程间操作无效: 从不是创建控件“txtSubstruction”的线程访问它。解决方法  
            Form1.CheckForIllegalCrossThreadCalls = false;  
        \}  
    \}  
\}

转载于:https://www.cnblogs.com/LeeYongze/archive/2009/11/10/1600103.html

[1.jpg]: /images/20211101/44ac47e939164884905f1407756eaa2c.png