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 WindowsFormsApp1
{
public partial class Form1 : Form
{
private object textReadout;
private string myNumber;
private string myOperator;
private int num1;
private int result;
private int num2;
public bool Flag { get; private set; }
public bool FlagsAttribute { get; private set; }
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
NumClick(0);
}
private void button5_Click(object sender, EventArgs e)
{
NumClick(3);
}
private void button7_Click(object sender, EventArgs e)
{
NumClick(4);
}
private void button11_Click(object sender, EventArgs e)
{
NumClick(1);
}
private void button3_Click(object sender, EventArgs e)
{
FlagsAttribute = true;
}
private void button6_Click(object sender, EventArgs e)
{
NumClick(7);
}
private void button10_Click(object sender, EventArgs e)
{
NumClick(9);
}
private void button9_Click(object sender, EventArgs e)
{
NumClick(6);
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void Form1_Load(object sender, EventArgs e)
{
textReadout.Text = "0.";
textReadout.TextAlign = HorizontalAlignment.Right;
}
private void textBox1_TextChanged_1(object sender, EventArgs e)
{
void NumClick(int myNumber)
{
if(Flag)
{
txtReadout.Text = txtReadout.Text + myNumber;
}
else
{
if (textReadout.Text ="0.")
{
textReadout.Text = myNumber + ".";
}
else
{
textReadout.Text = txtReadout.Text.Substring(0, txtReadout.Text.Length - 1) + myNumber + ".";
}
}
}
}
private void btnNum2_Click(object sender, EventArgs e)
{
NumClick(2);
}
private void NumClick(int v)
{
throw new NotImplementedException();
}
private void btnNum5_Click(object sender, EventArgs e)
{
NumClick(5);
}
private void btnNum8_Click(object sender, EventArgs e)
{
NumClick(8);
}
private void btnC_Click(object sender, EventArgs e)
{
num1 = 0;
num2 = 0;
txtReadout.Text = "0.";
Flag = false;
}
private void btnAdd_Click(object sender, EventArgs e)
{
myOperator = "add";
num1 = double.Parse(txtReadout.Text)
txtReadout.Text = "0.";
Flag = false;
}
private void btnSub_Click(object sender, EventArgs e)
{
myOperator = "Sub";
num1 = double.Parse(txtReadout.Text);
txtReadout.Text = "0.";
Flag = false;
}
private void btnMul_Click(object sender, EventArgs e)
{
myOperator = "Mul";
num1 = double.Parse(txtReadout.Text);
txtReadout.Text = "0.";
Flag = false;
}
private void btnDiv_Click(object sender, EventArgs e)
{
myOperator = "Div";
num1 = double.Parse(txtReadout.Text);
txtReadout.Text = "0.";
Flag = false;
}
private void btnAmount_Click(object sender, EventArgs e)
{
num2=double Parse (txtReadout.Text);
switch (myOperator)
{
case "add":
result = num1 + num2;
txtReadout.Text = result.ToString();
break;
case "Sub":
result = num1 - num2;
txtReadout.Text = result.ToString();
break;
case "Mul":
result = num1 * num2;
txtReadout.Text = result.ToString();
break;
case "Div":
if(num2=0)
{
textReadout.Text = "除数不能为“0”！";
}
else
{
result = num1 / num2;
textReadout.Text = result.ToString();
}
break;
}
}
private void Parse(string text)
{
throw new NotImplementedException();
}
}
}
private object textReadout;
这是什么
你在界面上放一个文本框,叫做 textReadout 就好了，这个去掉
num2=double Parse (txtReadout.Text);
这个double后面少一个点
你可以google下C#的计算器代码，很多现成的