C#实现简单的计算器功能完整实例

本文实例讲述了c#实现简单的计算器功能。分享给大家供大家参考，具体如下：
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									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;

									using system.collections;

									using system.threading;

									using system.diagnostics;

									namespace calculator

									{

									  public partial class form1 : form

									  {

									    public form1()

									    {

									      initializecomponent();

									    }

									    private string _sign;

									    private double _first = 10241024;

									    private double _second = 10241024;

									    private string _number;

									    private void button1_click(object sender, eventargs e)

									    {

									      _number += "1";

									      this.textbox1.text += "1";

									    }

									    private void button2_click(object sender, eventargs e)

									    {

									      _number += "2";

									      this.textbox1.text += "2";

									    }

									    private void button3_click(object sender, eventargs e)

									    {

									      _number += "3";

									      this.textbox1.text += "3";

									    }

									    private void button4_click(object sender, eventargs e)

									    {

									      _number += "4";

									      this.textbox1.text += "4";

									    }

									    private void button8_click(object sender, eventargs e)

									    {

									      _number += "5";

									      this.textbox1.text += "5";

									    }

									    private void button7_click(object sender, eventargs e)

									    {

									      _number += "6";

									      this.textbox1.text += "6";

									    }

									    private void button6_click(object sender, eventargs e)

									    {

									      _number += "7";

									      this.textbox1.text += "7";

									    }

									    private void button5_click(object sender, eventargs e)

									    {

									      _number += "8";

									      this.textbox1.text += "8";

									    }

									    private void button9_click(object sender, eventargs e)

									    {

									      _number += "9";

									      this.textbox1.text += "9";

									    }

									    private void button10_click(object sender, eventargs e)

									    {

									      _number += "0";

									      this.textbox1.text += "0";

									    }

									    private void button16_click(object sender, eventargs e)

									    {

									      //设置加号计算数

									      setnumber(convert.todouble(_number));

									      if (_sign == null || _second == 10241024)

									      {

									        _sign = "+";

									        this.textbox1.text += "+";

									        return;

									      }

									      if (_second != 10241024)

									      {

									        //开始进行计算

									        computer compro = new computer(_sign, _first, _second);

									        this.textbox1.text = compro.comt(out _first).tostring();

									        //验证除数为零的情况

									        if (_first == 10241024.10241023)

									        {

									          this.textbox1.text = "0";

									          messagebox.show("除数不能为零！");

									          _number = null;

									          _first = 10241024;

									          _second = 10241024;

									          this.textbox1.text = null;

									          _sign = null;

									          this.textbox1.text = null;

									        }

									        //开始初始化数据

									        _sign = "+";

									        this.textbox1.text += "+";

									        _second = 10241024;

									        _number = null;

									        return;

									      }

									    }

									    private void button15_click(object sender, eventargs e)

									    {

									      //设置减号计算数

									      setnumber(convert.todouble(_number));

									      if (_sign == null || _second == 10241024)

									      {

									        _sign = "-";

									        this.textbox1.text += "-";

									        return;

									      }

									      if (_second != 10241024)

									      {

									        //开始进行计算

									        computer compro = new computer(_sign, _first, _second);

									        this.textbox1.text = compro.comt(out _first).tostring();

									        //验证除数为零的情况

									        if (_first == 10241024.10241023)

									        {

									          this.textbox1.text = "0";

									          messagebox.show("除数不能为零！");

									          _number = null;

									          _first = 10241024;

									          _second = 10241024;

									          this.textbox1.text = null;

									          _sign = null;

									          this.textbox1.text = null;

									        }

									        //开始初始化数据

									        _sign = "-";

									        this.textbox1.text += "-";

									        _second = 10241024;

									        _number = null;

									        return;

									      }

									    }

									    private void button14_click(object sender, eventargs e)

									    {

									      //设置乘号计算数

									      setnumber(convert.todouble(_number));

									      if (_sign == null || _second == 10241024)

									      {

									        _sign = "*";

									        this.textbox1.text += "*";

									        return;

									      }

									      if (_second != 10241024)

									      {

									        //开始进行计算

									        computer compro = new computer(_sign, _first, _second);

									        this.textbox1.text = compro.comt(out _first).tostring();

									        //验证除数为零的情况

									        if (_first == 10241024.10241023)

									        {

									          this.textbox1.text = "0";

									          messagebox.show("除数不能为零！");

									          _number = null;

									          _first = 10241024;

									          _second = 10241024;

									          this.textbox1.text = null;

									          _sign = null;

									          this.textbox1.text = null;

									        }

									        //开始初始化数据

									        _sign = "*";

									        this.textbox1.text += "*";

									        _second = 10241024;

									        _number = null;

									        return;

									      }

									    }

									      /// <summary>

									      /// 设置除号计算数

									      /// </summary>

									      /// <param name="sender"></param>

									      /// <param name="e"></param>

									    private void button11_click(object sender, eventargs e)

									    {

									      setnumber(convert.todouble(_number));

									      if (_sign == null || _second == 10241024)

									      {

									        _sign = "/";

									        this.textbox1.text += "/";

									        return;

									      }

									      if (_second != 10241024)

									      {

									        //开始进行计算

									        computer compro = new computer(_sign, _first, _second);

									        this.textbox1.text = compro.comt(out _first).tostring();

									        //验证除数为零的情况

									        if (_first == 10241024.10241023)

									        {

									          this.textbox1.text = "0";

									          this.textbox1.text = "除数不能为零！";

									          _number = null;

									          _first = 10241024;

									          _second = 10241024;

									          this.textbox1.text = null;

									          _sign = null;

									          this.textbox1.text = null;

									        }

									        //开始初始化数据

									        _sign = "/";

									        this.textbox1.text += "/";

									        _second = 10241024;

									        _number = null;

									        return;

									      }

									    }

									    /// <summary>

									    /// 清空输入框

									    /// </summary>

									    /// <param name="sender"></param>

									    /// <param name="e"></param>

									    private void button12_click(object sender, eventargs e)

									    {

									      _number = null;

									      _first = 10241024;

									      _second = 10241024;

									      this.textbox1.text = null;

									      _sign = null;

									      this.textbox1.text = null;

									    }

									    private void button13_click(object sender, eventargs e)

									    {

									      setnumber(convert.todouble(_number));

									      //判断是否设置了_second的值

									      if (_second == 10241024)

									      {

									        _second = convert.todouble(_number);

									        _number = null;

									      }

									      //判断是否设置了_first的值

									      if (_first == 10241024)

									      {

									        _first = convert.todouble(_number);

									        _number = null;

									      }

									      //判断是否有_sign的值

									      if (_sign == null)

									      {

									        _sign = "+";

									      }

									      //开始进行计算

									      computer compro = new computer(_sign, _first, _second);

									      this.textbox1.text = compro.comt(out _first).tostring();

									      //验证除数为零的情况

									      if (_first == 10241024.10241023)

									      {

									        this.textbox1.text = "0";

									        messagebox.show("除数不能为零！");

									        _number = null;

									        _first = 10241024;

									        _second = 10241024;

									        this.textbox1.text = null;

									        _sign = null;

									        this.textbox1.text = null;

									      }

									      //开始初始化数据

									      _sign = null;

									      _second = 10241024;

									      _number = null;

									    }

									    public class computer

									    {

									      private string _sign;

									      private double _first;

									      private double _second;

									      public computer(string str, double first, double second)

									      {

									        _sign = str;

									        _first = first;

									        _second = second;

									      }

									      //选择相应的运算符进行运算

									      public double comt(out double first)

									      {

									        if (_sign == "+")

									        {

									          first = _first + _second;

									          return _first + _second;

									        }

									        else if (_sign == "-")

									        {

									          first = _first - _second;

									          return _first - _second;

									        }

									        else if (_sign == "*")

									        {

									          first = _first * _second;

									          return _first * _second;

									        }

									        else if (_sign == "/")

									        {

									          if (_second == 0)

									          {

									            first = 10241024.10241023;

									            return 10241024.10241023;

									          }

									          else

									          {

									            first = _first / _second;

									            return _first / _second;

									          }

									        }

									        else

									        {

									          first = 10241024.10241024;

									          return 10241024.10241024;

									        }

									      }

									    }

									    //设置数字函数

									    public void setnumber(double number)

									    {

									      if (_first == 10241024 && _number != null)

									      {

									        _first = convert.todouble(_number);

									        _number = null;

									      }

									      else if (_second == 10241024 && _number != null)

									      {

									        _second = convert.todouble(_number);

									        _number = null;

									      }

									    }

									    private void timer1_tick(object sender, eventargs e)

									    {

									      this.label2.text = datetime.now.tostring();

									    }

									    private void button24_click(object sender, eventargs e)

									    {

									      if (this.textbox1.text == " ")

									      {

									        messagebox.show("请输入数据");

									        this.textbox1.text = convert.toint64(textbox1.text.tostring(), 2).tostring();

									      }

									      else

									      {

									        this.textbox1.text = convert.toint64(textbox1.text.tostring(), 2).tostring();

									      }

									    }

									    private void button22_click(object sender, eventargs e)

									    {

									      if (this.textbox1.text == " ")

									      {

									        messagebox.show("请输入数据");

									        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);

									        this.textbox1.text = convert.tostring(int64,16);

									      }

									      else

									      {

									        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);

									        this.textbox1.text = convert.tostring(int64, 16);

									      }

									    }

									    private void button23_click(object sender, eventargs e)

									    {

									      if (this.textbox1.text == " ")

									      {

									        messagebox.show("请输入数据");

									        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);

									        this.textbox1.text = convert.tostring(int64, 8);

									      }

									      else

									      {

									        int64 int64 = convert.toint64(textbox1.text.tostring(), 2);

									        this.textbox1.text = convert.tostring(int64, 8);

									      }

									    }

									    private void button21_click(object sender, eventargs e)

									    {

									      if (this.textbox1.text == " ")

									      {

									        messagebox.show("请输入数据");

									        int64 int64 = convert.toint64(textbox1.text);

									        this.textbox1.text = convert.tostring(int64, 2);

									      }

									      else

									      {

									        int64 int64 = convert.toint64(textbox1.text);

									        this.textbox1.text = convert.tostring(int64, 2);

									      }

									    }

									    private void button27_click(object sender, eventargs e)

									    {

									      double buffer1= convert.todouble(textbox1.text);

									        buffer1 = 1 / buffer1;

									      this.textbox1.text = buffer1.tostring();

									    }

									    private void button17_click(object sender, eventargs e)

									    {

									      _number += ".";

									      this.textbox1.text += ".";

									    }

									    private void button25_click(object sender, eventargs e)

									    {

									      double buffer1 = convert.todouble(textbox1.text);

									      buffer1 = buffer1 * buffer1;

									      this.textbox1.text = buffer1.tostring();

									    }

									    private void button26_click(object sender, eventargs e)

									    {

									      if (this.textbox1.text == " ")

									      {

									        messagebox.show("请输入数据");

									        int64 int64 = convert.toint64(this.textbox1.text);

									        int64 temp1 = 1;

									        while (int64 > 1)

									        {

									          temp1 = temp1*int64 ;

									          int64--;

									        }

									        this.textbox1.text = temp1.tostring();

									      }

									      else

									      {

									        int64 int64 = convert.toint64(this.textbox1.text);

									        int64 temp1 = 1;

									        while (int64 > 1)

									        {

									          temp1 = temp1 * int64;

									          int64--;

									        }

									        this.textbox1.text = temp1.tostring();

									      }

									    }

									    private void button28_click(object sender, eventargs e)

									    {

									      //int64 int64 = convert.toint64(this.textbox1.text);

									      //double temp=math.log10(int64);

									      //this.textbox1.text = temp.tostring();

									      double temp1, temp2;

									      string[] strarry = new string[2];

									      strarry = this.textbox1.text.split('.');

									      temp1 = convert.todouble(strarry[0]);

									      temp2 = convert.todouble(strarry[1]);

									      // double temp1 = convert.todouble(this.textbox1.text);

									      temp2 = math.log(temp2,temp1 );

									      this.textbox1.text = temp2.tostring();

									    }

									    private void button18_click(object sender, eventargs e)

									    {

									      double temp1 = convert.todouble(this.textbox1.text);

									      double temp2 = math.sin(temp1);

									      this.textbox1.text = temp2.tostring();

									    }

									    private void button19_click(object sender, eventargs e)

									    {

									      double temp1 = convert.todouble(this.textbox1.text);

									      double temp2 = math.cos(temp1);

									      this.textbox1.text = temp2.tostring();

									    }

									    private void button20_click(object sender, eventargs e)

									    {

									      double temp1 = convert.todouble(this.textbox1.text);

									      double temp2 = math.tan(temp1);

									      this.textbox1.text = temp2.tostring();

									    }

									    private void button33_click(object sender, eventargs e)

									    {

									      double temp1, temp2;

									      string[] strarry=new string[2];

									      strarry=this.textbox1.text.split('.');

									      temp1 = convert.todouble(strarry[0]);

									      temp2 = convert.todouble(strarry[1]);

									      // double temp1 = convert.todouble(this.textbox1.text);

									      temp2 = math.pow(temp1,temp2);

									      this.textbox1.text = temp2.tostring();

									    }

									    /// <summary>

									    /// 计算e的temp1次幂

									    /// </summary>

									    /// <param name="sender"></param>

									    /// <param name="e"></param>

									    private void button31_click(object sender, eventargs e)

									    {

									      double temp1 = convert.todouble(this.textbox1.text);

									      double temp2 = math.exp(temp1);

									      this.textbox1.text = temp2.tostring();

									    }

									    private void button34_click(object sender, eventargs e)

									    {

									       double temp1 = convert.todouble(this.textbox1.text);

									      double temp2 = math.sqrt(temp1);

									      this.textbox1.text = temp2.tostring();

									    }

									    private void button32_click(object sender, eventargs e)

									    {

									      double temp1, temp2;

									      string[] strarry = new string[2];

									      strarry = this.textbox1.text.split('.');

									      temp1 = convert.todouble(strarry[0]);

									      temp2 = convert.todouble(strarry[1]);

									      // double temp1 = convert.todouble(this.textbox1.text);

									      temp2 = math.ieeeremainder(temp1, temp2);

									      this.textbox1.text = temp2.tostring();

									    }

									    /// <summary>

									    /// 圆的面积

									    /// </summary>

									    /// <param name="sender"></param>

									    /// <param name="e"></param>

									    private void button30_click(object sender, eventargs e)

									    {

									      double buffer1 = convert.todouble(textbox1.text);

									      buffer1 =3.1415926*buffer1*buffer1;

									      this.textbox1.text = buffer1.tostring();

									    }

									    /// <summary>

									    /// 三角形面积

									    /// </summary>

									    /// <param name="sender"></param>

									    /// <param name="e"></param>

									    private void button29_click(object sender, eventargs e)

									    {

									      double temp1, temp2,temp3,p,area;

									      string[] strarry = new string[3];

									      strarry = this.textbox1.text.split('.');

									      temp1 = convert.todouble(strarry[0]);

									      temp2 = convert.todouble(strarry[1]);

									      temp3 = convert.todouble(strarry[2]);

									      // double temp1 = convert.todouble(this.textbox1.text);

									      p = (temp1 + temp2 + temp3) / 2;

									      area= p * (p - temp1) * (p - temp2) * (p - temp3);

									      area = math.sqrt(area);

									      this.textbox1.text = area.tostring();

									    }

									    private void linklabel1_linkclicked(object sender, linklabellinkclickedeventargs e)

									    {

									      string str = e.link.tostring();

									      process.start(str);

									    }

									    private void form1_load(object sender, eventargs e)

									    {

									    }

									  }

									}