c# - 对 C# 中的计算器操作感到困惑

Question

我正在使用 Windows 窗体应用程序制作一个计算器，但我现在很困惑。到目前为止，这是我的应用程序，它只能做加法，但可以做任意数量的数字。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Calculator
{
public partial class Form1 : Form
{
    int num;
    int answer = 0;
    int i;


    public Form1()
    {
        InitializeComponent();
    }



    private void plusButton_Click(object sender, EventArgs e)
    {          
        answer += System.Convert.ToInt32(textBox1.Text);            
        ClearTextbox();
    }

    private void minusButton_Click(object sender, EventArgs e)
    {
        //answer -= System.Convert.ToInt32(textBox1.Text);
        //ClearTextbox();
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }

    private void divideButton_Click(object sender, EventArgs e)
    {

    }

    private void multiplyButton_Click(object sender, EventArgs e)
    {

    }

    private void textBox1_TextChanged(object sender, EventArgs e)
    {

    }

    private void button1_Click(object sender, EventArgs e)
    {
        num = 1;
        displayInt(num);
    }

    private void button2_Click(object sender, EventArgs e)
    {
        num = 2;
        displayInt(num);
    }

    private void button3_Click(object sender, EventArgs e)
    {
        num = 3;
        displayInt(num);
    }

    private void button4_Click(object sender, EventArgs e)
    {
        num = 4;
        displayInt(num);
    }

    private void button5_Click(object sender, EventArgs e)
    {
        num = 5;
        displayInt(num);
    }

    private void button6_Click(object sender, EventArgs e)
    {
        num = 6;
        displayInt(num);
    }

    private void button7_Click(object sender, EventArgs e)
    {
        num = 7;
        displayInt(num);
    }

    private void button8_Click(object sender, EventArgs e)
    {
        num = 8;
        displayInt(num);
    }

    private void button9_Click(object sender, EventArgs e)
    {
        num = 9;
        displayInt(num);
    }

    private void button0_Click(object sender, EventArgs e)
    {
        num = 0;
        displayInt(num);
    }

    private void resetButton_Click(object sender, EventArgs e)
    {
        ClearTextbox();
        num = 0;
        answer = 0;

    }

    public void displayInt(int num)
    {
        textBox1.Text = textBox1.Text + num.ToString();
    }

    public void ClearTextbox()
    {
        textBox1.Clear();
    }

    public void DisplayAnswer(int answer)
    {
        answer += System.Convert.ToInt32(textBox1.Text); //Answer = Answer + Textbox Stuff


        textBox1.Clear();
        textBox1.Text = answer.ToString();
    }

    private void equalsButton_Click(object sender, EventArgs e)
    {
        DisplayAnswer(answer);
        num = 0;
        answer = 0;
    }


}
}

我不确定是否有办法等到按下另一个数字键，然后执行 x + y。我听说过事件处理程序，但对我来说这是一个相当模糊的话题。

这是一张图片:http://img196.imageshack.us/img196/4127/12464e13e5154a949a9a457.png

*我希望它能够对超过 2 个数字进行运算。

谢谢!

Answer 1

你的代码有点乱，很难理解你的意图。有关此代码的帮助将在很长一段时间内到来。我建议关注 this simple calculator tutorial .它很好地解释了概念和步骤，包括按钮事件。