c#实现简易计算器

1.进入vs,按图创建项目

2.点击确定后出现form窗体，左侧有工具箱

将里边的Button和TextBox拖拽到form窗体，textbox是计算器数字输入输出的地方，拖拽一个就行，button的数量按自己的计算器要实现功能来确定

这是我要做的界面，所以拖拽了20个button，我的button从 +/-开始向右加1
对应的2是button6
对应x²是button18

（修改button的样式在vs的右下角，如果不清楚怎么改去网上搜一下，但是建议大家不要不要不要在现在就调整背景色，字体，或者改button里边的内容，先写代码，最后回来设计样式）
3 代码（双击窗体或者右击查看代码）
注意代码和窗体名称的匹配，如果你的button顺序和我的一致，那么代码就可以直接用了。如果不匹配，在右下角属性这里把click名字改一下，比如你的2对应的是button14按钮，那么把click这里名字改成我上边图示的button6_click，效果就和我的一样了

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 计算器实验1
{
public partial class Form1 : Form
{
double first = 0;
double last = 0;
double result = 0;
bool c = false;
string d= “”;

public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){textBox1.Text = \"0\";}private void button2_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"0\";}private void button3_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \".\";}private void button5_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"1\";}private void button6_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"2\";}private void button7_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"3\";}private void button9_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"4\";}private void button10_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"5\";}private void button11_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"6\";}private void button13_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"7\";}private void button14_Clic(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"8\";}private void button15_Click(object sender, EventArgs e){if (c == true){textBox1.Text = \"\";c = false;}textBox1.Text += \"9\";}private void button20_Click(object sender, EventArgs e)// /{c = true;first = double.Parse(textBox1.Text);d = \"/\";}private void button16_Click(object sender, EventArgs e) //*{c = true;first = double.Parse(textBox1.Text);d = \"*\";}private void button12_Click(object sender, EventArgs e) //-{if (textBox1.Text == \"0\")textBox1.Text = \"-\";else {c = true;first = double.Parse(textBox1.Text);d = \"-\";}}private void button8_Click(object sender, EventArgs e) //+{c = true;first = double.Parse(textBox1.Text);d = \"+\";}private void button1_Click(object sender, EventArgs e) //取反{if (double.Parse(textBox1.Text) > 0)textBox1.Text = \"-\" + textBox1.Text;else if(double.Parse(textBox1.Text)<0)textBox1.Text = -double.Parse(textBox1.Text) + \"\";}private void button17_Click(object sender, EventArgs e)   //C{textBox1.Text = \"\";first = 0;last = 0;result = 0;d = \"\";c = false;}private void button4_Click(object sender, EventArgs e) //={switch (d){case \"+\":result = first + double.Parse(textBox1.Text);break;case \"-\": result = first - double.Parse(textBox1.Text); break;case \"*\": result = first * double.Parse(textBox1.Text); break;case \"/\": result = first / double.Parse(textBox1.Text); break;case \"x²\":if (first != 0) result = first * first;else if (double.Parse(textBox1.Text) != 0) result = last * last;break;case \"√X\":if (first != 0) result = Math.Sqrt(first);else if (double.Parse(textBox1.Text) != 0) result = Math.Sqrt(last);break;}textBox1.Text = result+\"\";}private void button18_Click(object sender, EventArgs e) //平方{c = true;first = double.Parse(textBox1.Text);d = \"x²\";}private void button19_Click(object sender, EventArgs e) //开根号{c = true;first = double.Parse(textBox1.Text);d = \"√X\";}}

}

有其他问题给我留言吧，虽然我啥也不会，hiahiahiahia~~~

大黄姐姐原创文章 3获赞 1访问量 131关注私信