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);
}
}
}
}
C#实现简单计算器
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转载自blog.csdn.net/qq_45538469/article/details/103707513
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