大家好，我想用C#语言写一个计算器的程序，实现如下功能：第一次输入2+1= 得到结果3，之后按等号就可以一直执行+1操作，显示结果4，5，6……
                                                      如果输入的是2+3= 得到结果5，之后按等号就可以一直执行+3操作，显示结果8，11，14……
以下是已经写好的没有连加功能的程序，该如何改动呢？
using System;
using System.Collections.Generic;
using
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace WindowsApplication1
{
    public partial class Form1 : Form
    {
        double sum = 0;//记录部分和
        bool blnClear = false; //表示如果再输入数字或小数点，先清除编辑框中显示的前一个加数
        string strOper = "+"; //记录输入的运算符
        public   Form1()
        {
            InitializeComponent();
        }
        private void button10_Click(object sender, EventArgs e) //0数字键
        {
            if (blnClear) //如果为真，输入下一个加数前，先清除textBox1显示内容
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1=(Button )sender ;
            if (textBox1.Text != "0") //如果前面已经输入非零数字，如：12
                textBox1.Text += b1.Text; //此时键入0，应为120
            else
                textBox1.Text = b1.Text; //如已输入的数字为0，显示的数字应为0
        }
        private void button1_Click(object sender, EventArgs e) //1数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button2_Click(object sender, EventArgs e) //2数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button3_Click(object sender, EventArgs e) //3数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button4_Click(object sender, EventArgs e) //4数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button5_Click(object sender, EventArgs e) //5数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button6_Click(object sender, EventArgs e) //6数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button7_Click(object sender, EventArgs e) //7数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button8_Click(object sender, EventArgs e) //8数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button9_Click(object sender, EventArgs e) //9数字键
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            Button b1 = (Button)sender;
            if (textBox1.Text != "0")
                textBox1.Text += b1.Text;
            else
                textBox1.Text = b1.Text;
        }
        private void button11_Click(object sender, EventArgs e) //小数点的代码
        {
            if (blnClear)
            {
                textBox1.Text = "0";
                blnClear = false;
            }
            int n = textBox1.Text.IndexOf(".");
            if (n == -1) //如果没有小数点，增加小数点，否则不增加
                textBox1.Text = textBox1.Text + ".";
        }
        private void button13_Click(object sender, EventArgs e) //加号的代码
        {
               double dbSencond = Convert.ToDouble(textBox1 .Text );
            if (!blnClear) //如果未输入第二个操作符，不运算，例如连续输入+-*/或=
                switch (strOper) //按上次记录的运算符号运算
                {
                    case "+":
                        sum += dbSencond;
                        break;
                    case "-":
                        sum -= dbSencond;
                        break;
                    case "*":
                        sum *= dbSencond;
                        break;
                    case "/":
                        sum /= dbSencond;
                        break;

                }
            if (sender == button13) //记录此次键入的运算符
                strOper = "+";
            if (sender == button12)
                strOper = "=";
            textBox1.Text = Convert.ToString(sum ); // 显示部分和
            blnClear = true; // 设置标记使键入另一个加数前，先清除显示的前个加数
        }
        private void button12_Click(object sender, EventArgs e) //等号的代码
        {
            
            double dbSencond = Convert.ToDouble(textBox1.Text);
            if (!blnClear)
                switch (strOper)
                {
                    case "+":
                        sum += dbSencond ;
                        break;
                    case "-":
                        sum -= dbSencond;
                        break;
                    case "*":
                        sum *= dbSencond;
                        break;
                    case "/":
                        sum /= dbSencond;
                        break;
                }
            if (sender == button13)
                strOper = "+";
            if (sender == button12)
            {
                strOper = "=";
               
            }
            
            textBox1.Text = Convert.ToString(sum);
            blnClear = true;
           
        }
        private void button14_Click(object sender, EventArgs e) //减号的代码
        {
            double dbSencond = Convert.ToDouble(textBox1.Text);
            if (!blnClear)
                switch (strOper)
                {
                    case "+":
                        sum += dbSencond;
                        break;
                    case "-":
                        sum -= dbSencond;
                        break;
                    case "*":
                        sum *= dbSencond;
                        break;
                    case "/":
                        sum /= dbSencond;
                        break;
                }
            if (sender == button14)
                strOper = "-";
            if (sender == button12)
                strOper = "=";
            textBox1.Text = Convert.ToString(sum);
            blnClear = true;
        }
        private void button15_Click(object sender, EventArgs e) //乘号的代码
        {
            double dbSencond = Convert.ToDouble(textBox1.Text);
            if (!blnClear)
                switch (strOper)
                {
                    case "+":
                        sum += dbSencond;
                        break;
                    case "-":
                        sum -= dbSencond;
                        break;
                    case "*":
                        sum *= dbSencond;
                        break;
                    case "/":
                        sum /= dbSencond;
                        break;
                }
            if (sender == button15)
                strOper = "*";
            if (sender == button12)
                strOper = "=";
            textBox1.Text = Convert.ToString(sum);
            blnClear = true;
        }
        private void button16_Click(object sender, EventArgs e) //除号的代码
        {
            double dbSencond = Convert.ToDouble(textBox1.Text);
            if (!blnClear)
                switch (strOper)
                {
                    case "+":
                        sum += dbSencond;
                        break;
                    case "-":
                        sum -= dbSencond;
                        break;
                    case "*":
                        sum *= dbSencond;
                        break;
                    case "/":
                        sum /= dbSencond;
                        break;
                }
            if (sender == button16)
                strOper = "/";
            if (sender == button12)
                strOper = "=";
            textBox1.Text = Convert.ToString(sum);
            blnClear = true;
        }
        private void button17_Click(object sender, EventArgs e) //清除键的代码
        {
            textBox1.Text = "0";
            sum = 0;
            blnClear = false;
            strOper = "+";
        }  
  }
}

[ 本帖最后由 mosiying 于 2011-4-6 21:53 编辑 ]

增加三个变量: private bool isLoop;//控制=操作是否循环 private bool isOperator//是否连续运算 private double number//记录=前的数
=方法{
this.isOerator=false;
if(!isLoop)
{
//计算number...
}
isLoop=true;
//添加=号的运算循环}
同理修改下运算下的;

 

[ 本帖最后由 lwsfyts 于 2011-4-7 08:21 编辑 ]

要是我写的话，就用两个变量记忆两个操作数，按+输出结果。如果再按+的话，第一个操作数更新为前面两个操作数之和，接下来输入的值给第二个操作数。当然这其中要有一个标志判断是否是第一次按＋号键了！

等号的运算循环怎么写啊？还是不会啊~~那个number是不是之前算出来的sum啊？好晕啊~

{
this.isOperator = false;//把运算循环停止
if (!isLoop)//如果是第一次按了等号
{ //先读取=号的number  }   
isLoop = true;//
//根据记录的运算符求得结果(+=/-=/...)number;
//显示结果
}           

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

namespace Cale
{
    public partial class Form1 : Form
    {
        int x = 0;
        int y = 0;
        string runType = string.Empty;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
        }

        private void btn_1_Click(object sender, EventArgs e)
        {
            Button b = sender as Button;
            this.textBox1.Text+=   b.Text;
           //Button c= sender as Button;
        }

        private void but_add_Click(object sender, EventArgs e)
        {
            Button b = sender as Button;
            this.runType = b.Text;
            this.x = int.Parse(this.textBox1.Text);
            this.textBox1.Clear();
        }

        private void btn_out_Click(object sender, EventArgs e)
        {
            this.y = int.Parse(this.textBox1.Text);
            if (this.runType == "+")
            {
                this.textBox1.Text = (this.x + this.y).ToString();
            }
            else if (this.runType == "-")
            {
                this.textBox1.Text = (this.x - this.y).ToString();
            }
            else if (this.runType == "*")
            {
                this.textBox1.Text = (this.x * this.y).ToString();
            }
            else if (this.runType == "/")
            {
                this.textBox1.Text = (this.x / this.y).ToString();
            }
        }


        private void btn_clear_Click(object sender, EventArgs e)
        {
            this.textBox1.Clear();
        }
    }
}

选中0-9,写一个Click事件多简单 !

[ 本帖最后由 one_june 于 2011-4-7 15:57 编辑 ]

楼上这个代码还要进一步完善:1).小数2).连续运算2+3+5..
3)=循环3+5=8=13..4)按0再按0..判断...

你是不是想实现 按一下1+1=2  然后连续按=号 连续算出结果 2 3 4 5 。。。 ？
写一个两个数相加的方法 double A(dobule x,dobule y)用来返回相加结果
给每一个按钮加标示，标示记录前两个计算符号按钮按钮，比如：如果按下1+1，假设+的标示为+，那么标示字段里为“+”
在=号按钮事件内判断标示，如果标示最后一个不为=，假设为“+”，把标示改为“+=”，调用A(1,1)
若标示最后一位为=  则不改变标示，直接A(sum,1),sum为上一次计算出的值

我在做一个计算器，请问连加的代码怎么写，比如1+2+3+4