C#实现简单计算器

た入场券 2023-06-25 04:49 60阅读 0赞

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 Caculater
    { 
        public partial class Form1 : Form
        { 
            public Form1()
            { 
                InitializeComponent();
            }
    
            private void Form1_Load(object sender, EventArgs e)
            { 
                textBox3.Enabled = false;
            }
    
            private void radioButton1_CheckedChanged(object sender, EventArgs e)
            { 
                if(radioButton1.Checked)
                { 
                    label.Text = "+";
                }
            }
    
            private void radioButton2_CheckedChanged(object sender, EventArgs e)
            { 
                if (radioButton2.Checked)
                { 
                    label.Text = "-";
                }
            }
    
            private void radioButton3_CheckedChanged(object sender, EventArgs e)
            { 
                if (radioButton3.Checked)
                { 
                    label.Text = "*";
                }
            }
    
            private void radioButton4_CheckedChanged(object sender, EventArgs e)
            { 
                if (radioButton4.Checked)
                { 
                    label.Text = "/";
                }
            }
    
            private void button1_Click(object sender, EventArgs e)
            { 
                int a, b, c;
    
                a = Convert.ToInt32(textBox1.Text);
                b = Convert.ToInt32(textBox2.Text);
                if(label.Text == "+")
                { 
                    c = a + b;
                    textBox3.Enabled = true;
                    textBox3.Text = Convert.ToString(c);
                }
                if (label.Text == "-")
                { 
                    c = a - b;
                    textBox3.Enabled = true;
                    textBox3.Text = Convert.ToString(c);
                }
                if (label.Text == "*")
                { 
                    c = a * b;
                    textBox3.Enabled = true;
                    textBox3.Text = Convert.ToString(c);
                }
                if (label.Text == "/")
                { 
                    if (b == 0)
                    { 
                        MessageBox.Show("输入的值不能为0，请重新输入！", "错误提示", MessageBoxButtons.OK);
                    }
                    else
                    { 
                        c = a / b;
                        textBox3.Enabled = true;
                        textBox3.Text = Convert.ToString(c);
                    }
                }
            }
    
            private void button2_Click(object sender, EventArgs e)
            { 
                textBox1.Text = "";
                textBox2.Text = "";
                textBox3.Text = "";
                textBox3.Enabled = false;
            }
    
            private void textBox1_TextChanged(object sender, EventArgs e)
            { 
                try
                { 
                    int n = 0;
                    n = int.Parse(this.textBox1.Text.Trim());
                }
                catch
                { 
                    MessageBox.Show("请输入数字", "错误提示", MessageBoxButtons.YesNo);
                }
            }
    
            private void textBox2_TextChanged(object sender, EventArgs e)
            { 
                try
                { 
                    int n = 0;
                    n = int.Parse(this.textBox1.Text.Trim());
                }
                catch
                { 
                    MessageBox.Show("请输入数字", "错误提示", MessageBoxButtons.YesNo);
                }
            }
        }
    }