C#问题！！！！

Question

谁可以给我个C#windows应用程序的计算器的源代码 
谢谢各位了
三克油。

Answer 1

http://d.download.csdn.net/down/1713728/yang073402http://wenwen.soso.com/z/q127561405.htm

Answer 2

http://www.codesky.net/showhtml/17335.htm

Answer 3

自己网上找呗，很多的~~~~
download.prjcode.com/detail/giWhcg
www.codechina.net/source/2790751

Answer 4

 public partial class Form66 : Form
    {
        Double dblAcc = 0;
        Double dblSec = 0;
        bool blnClear = true, blnFrstOpen = true;
        String strOper = "=";
        public Form66()
        {
            InitializeComponent();
        }
        private void btn_clk(object obj, EventArgs ea)
        {
            if (blnClear)
                txtshow.Text = "";
            Button b3 = (Button)obj;
            txtshow.Text += b3.Text;
            if (txtshow.Text == ".")
                txtshow.Text = "0.";
            dblSec = Convert.ToDouble(txtshow.Text);
            blnClear = false;
        }        private void btn_Oper(object obj, EventArgs ea)
        {
            Button tmp = (Button)obj;
            strOper = tmp.Text;
            if (blnFrstOpen)
                dblAcc = dblSec;
            else
                calc();
            blnFrstOpen = false;
            blnClear = true;
        }
        //等号运算
        private void btn_equ(object obj, EventArgs ea)
        {
            calc();
            blnClear = true;
        }
        //所有运算操作
        private void calc()
        {
            switch (strOper)
            {
                case "+":
                    dblAcc += dblSec; //加号运算
                    break;
                case "-":
                    dblAcc -= dblSec; //减号运算
                    break;
                case "*":
                    dblAcc *= dblSec; //乘号运算
                    break;
                case "/":
                    dblAcc /= dblSec; //除号运算
                    break;
            }
            strOper = "="; //等号运算
            blnFrstOpen = true;
            txtshow.Text = Convert.ToString(dblAcc);//将运算结果转换成字符类型,并输出
            dblSec = dblAcc;//将运算数A的值放入运算数B中,以便后面运算
        }
        //清除按钮
        private void btn_clr(object obj, EventArgs ea)
        {
            clear();
        }
        //清除按钮的操作
        private void clear()
        {
            dblAcc = 0;
            dblSec = 0;
            blnFrstOpen = true;
            txtshow.Text = "";
        }
  
    }
}