自己编的c#小程序—计算器

1、Op1 = System.Convert .ToDouble(tb.Text);实验内容1.仿照windows自带的计算机用C#语言做一个能简单加减乘除的计算器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 WindowsFormsApplication1public par

2、tial class Form1 : Formprivate bool ClearDisplay = true ;privatestringOp;privatedoubleOp1;privatedoubleOp2;privatedouble result;public Form1()InitializeComponent();private void textBox1_TextChanged( object sender, EventArgs e)private void Form1_Load()private void ce_Click( object sender, EventArgs e

3、)tb.Text = ;Op = ;Op1 = 0;Op2 = 0;result = 0;private void num0_Click( object sender, EventArgs e)tb.Text = tb.Text+0;private void num1_Click( object sender, EventArgs e)tb.Text = tb.Text+1;Convert .ToDouble(tb.Text);Op1 = System.private void num2_Click( object sender, EventArgs e)tb.Text = tb.Text+2

4、;Op1 = System. Convert .ToDouble(tb.Text);)private void num3_Click_1( object sender, EventArgs e) (tb.Text = tb.Text +3;Op1 = System. Convert .ToDouble(tb.Text);)private void num4_Click( object sender, EventArgs e) (tb.Text = tb.Text+4;Op1 = System. Convert .ToDouble(tb.Text);)private void num5_Clic

5、k( object sender, EventArgs e) (tb.Text = tb.Text+5;Op1 = System. Convert .ToDouble(tb.Text);)private void num6_Click( object sender, EventArgs e) (tb.Text = tb.Text+6;Op1 = System. Convert .ToDouble(tb.Text);)private void num7_Click( object sender, EventArgs e) (tb.Text = tb.Text+7;Op1 = System. Co

6、nvert .ToDouble(tb.Text);)private void num8_Click( object sender, EventArgs e) (tb.Text = tb.Text+8;Op1 = System. Convert .ToDouble(tb.Text);)private void num9_Click( object sender, EventArgs e)tb.Text = System.Convert .ToString (result);Op1 = System.Convert .ToDouble(tb.Text);private void button16_

7、Click(objectsender,EventArgse)Op=+;Op2 = Op1;tb.Text =)private void button15_Click( Op =- ;Op2 = Op1;tb.Text =;objectsender,EventArgse)private void button14_Click( Op =* ;Op2 = Op1;tb.Text =;)private void button13_Click( Op =/ ;objectobjectsender,sender,EventArgsEventArgse)e)Op2 = Op1;tb.Text =;)private void button17_Click(switch (Op)case + :objectsender,EventArgs e)result = Op1 + Op2;break ;case -:result = Op2 - Op1;break ;caseresult = Op1 * Op2;break ;case / :result = Op2 / Op1;break