简单的计算器···c#Windows窗体应用
只实现了简单的+-*/，而且不能键盘输入代码不是原创，但是是我一步一步敲出来的，特别容易理解，适合初期小白学习（我也是初期小白一枚）。
大佬们如果有优化的方法可以说出来，供我和其他小白学习。
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 lxjsq
{
public partial class Form1 : Form
{
double a = 0;
double b = 0;
bool c = false;
string d;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button9_Click(object sender, EventArgs e)
{
if(c==true)
{
textBox1.Text = "";
c = false;
}textBox1.Text += 1;
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button10_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 2;
}
private void button11_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 3;
}
private void button5_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 4;
}
private void button6_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 5;
}
private void button7_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 6;
}
private void button1_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 7;
}
private void button2_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 8;
}
private void button3_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 9;
}
private void button13_Click(object sender, EventArgs e)
{
if (c == true)
{
textBox1.Text = "";
c = false;
}
textBox1.Text += 0;
if (d == "/")
{
textBox1.Clear();
MessageBox.Show("除数不能为零", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
private void button4_Click(object sender, EventArgs e)
{
if (textBox1.Text == "")
{
MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else
{
c = true; b = double.Parse(textBox1.Text);
d = "+";
}
}
private void button8_Click(object sender, EventArgs e)
{
if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }
else
{
c = true; b = double.Parse(textBox1.Text);
d = "-";
}
}
private void button12_Click(object sender, EventArgs e)
{
if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }
else
{
c = true; b = double.Parse(textBox1.Text);
d = "*";
}
}
private void button16_Click(object sender, EventArgs e)
{
if (textBox1.Text == "") { MessageBox.Show("请先输入值再计算！", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Warning); }
else
{
c = true; b = double.Parse(textBox1.Text);
d = "/";
}
}
private void button14_Click(object sender, EventArgs e)
{
switch (d)
{
case "+":a = b + double.Parse(textBox1.Text);break;
case "-": a = b - double.Parse(textBox1.Text); break;
case "*": a = b * double.Parse(textBox1.Text); break;
case "/": a = b / double.Parse(textBox1.Text); break;
}textBox1.Text = a + "";
c = true;
}
private void button15_Click(object sender, EventArgs e)
{
textBox1.Text = "";
}
}
}
谢谢分享，这对我很有用 本帖最后由 朕灬临幸天下 于 2020-12-9 16:09 编辑
大佬 做一个类似这样的软件有多难啊
就是输入客单价和销量 自动计算出优惠金额和优惠后客单价
每次要打开Excel 实在是太麻烦了 可是我不懂编程 不知道做一个这样的软件 要多久 朕灬临幸天下 发表于 2020-12-9 16:08
大佬 做一个类似这样的软件有多难啊
分分钟的事儿。 sweet_love 发表于 2020-12-9 16:56
分分钟的事儿。
大佬求帮助啊 打开excel嫌麻烦，估计新做一个软件，也会嫌麻烦。
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