C#实现计算器功能(winform版)

本文实例为大家分享了c#实现计算器功能的具体代码，供大家参考，具体内容如下

代码：

random rad = new random(); // 实例化随机对象    private void form1_load(object nder, eventargs e)    {      this.left = screen.primaryscreen.workingarea.width / 2 - this.width / 2;      this.top = screen.primaryscreen.workingarea.height / 2 - this.height / 2;      this.text = "计算器";      textbox1.readonly =true;// 文本框无法输入字符      foreach (control ctl in this.controls)      {  // 获取所有按钮 改变背景颜色和数字和符号颜色        if (ctl is button)        {          button btn = ctl as button;          btn.backcolor = color.fromargb(rad.next(256),rad.next(256),rad.next(256),rad.next(256));          btn.forecolor = color.fromargb(rad.next(256), rad.next(256), rad.next(256));        }      }    }    private void 关闭toolstripmenui两只蝴蝶搞笑版tem_click(object nder, eventargs e)    {      this.clo();// 关闭窗体    }    char fuhao;// 接收符号    double temp, num; // temp第一个值，num为第二个值   // 1    private void button1_click(object nder, eventargs e)    {      textbox1.text += "1";    }    // 2    private void butto圆的标准方程公式n2_click(object nder, eventargs e)    {      textbox1.text += "2";    }    // 3    private void button3_click(object nder, eventargs e)    {      textbox1.text += "3";    }    // 4    private void button5两弹一星指什么_click(object nder, eventargs e)    {      textbox1.text += "4";    }    // 5    private void button6_click(object nder, eventargs e)    {      textbox1.text += "5";    }    // 6    private void button7_click(object nder, eventargs e)    {      textbox1.text += "6";    }    // 7    private void button9_click(object nder, eventargs e)    {      textbox1.text += "7";    }    // 8    private void button10_click(object nder, eventargs e)    {      textbox1.text += "8";    }    // 9    private void button11_click(object nder, eventargs e)    {      textbox1.text += "9";    }    // 0    private void button15_click(object nder, eventargs e)    {      textbox1.text += "0";    }    //点    private void button16_click(object nder, eventargs e)    {      textbox1.text += ".";    }    // +    private void button4_click(object nder, eventargs e)    {      num = double.par(textbox1.text);      fuhao = '+';      textbox1.text += "+";      //textbox1.text = null;    }    // -    private void button8_click(object nder, eventargs e)    {      num = double.par(textbox1.text);      fuhao = '-';      textbox1.text = null;    }    // ×    private void button12幼儿园大班毕业寄语_click(object nder, eventargs e)    {      num = double.par(textbox1.text);      fuhao = '×';      textbox1.text = null;    }    // ÷    private void button20_click(object nder, eventargs e)    {      num = double.par(textbox1.text);      fuhao = '÷';      textbox1.text = null;    }    // %    private void button19_click(object nder, eventargs e)    {      num = d不敏ouble.par(textbox1.text);      fuhao = '%';      textbox1.text = null;    }    // =    private void button13_click(object nder, eventargs e)    {      temp = double.par(textbox1.text);      switch (fuhao)      {        ca '+':          num += temp;        break;        ca '-':          num -= temp;          break;        ca '×':          num *= temp;          break;        ca '÷':          num /= temp;          break;        ca '%':          num %= temp;          break;        default:          break;      }      textbox1.text = num.tostring();      fuhao = ' ';      num = 0;      temp = 0;    }    // 删除    private void button18_click(object nder, eventargs e)    {      if (textbox1.text.length > 0)      {        textbox1.text = textbox1.text.substring(0, textbox1.text.length - 1);      }    }    //清空    private void button17_click(object nder, eventargs e)    {      textbox1.text = "";    }

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