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  • C#windows窗体程序

    简易加法

    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;
    
    namespace WindowsFormsApplication4
    {
        public partial class Form1 : Form
        {
            public Form1()
            {
                InitializeComponent();
            }
    
            private void label1_Click(object sender, EventArgs e)
            {
    
            }
    
            private void label1_Click_1(object sender, EventArgs e)
            {
    
            }
    
            private void label2_Click(object sender, EventArgs e)
            {
    
            }
    
            private void textBox3_TextChanged(object sender, EventArgs e)
            {
    
            }
    
            private void button1_Click(object sender, EventArgs e)
            {
                if (textBox1.Text.Length == 0 || textBox2.Text.Length == 0)
                {
                    MessageBox.Show("请输入数!:");
                    return;
                }
    
                try
                {
                    double x = double.Parse(textBox1.Text);
                    double y = double.Parse(textBox2.Text);
                    textBox3.Text = (x + y).ToString();
    
                }
    
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
    
    
            }
            }
        }
    

      实现结果:

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  • 原文地址:https://www.cnblogs.com/zykh/p/7711573.html
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