沈?qū)W友計算器

1、實驗五/六：Windows界面設(shè)計基礎(chǔ)一、實驗?zāi)康氖煜indows窗體及其各種基本控件的功能和用法二、實驗內(nèi)容利用Windows窗體及其各種基本控件實現(xiàn)簡易計算器。三、實驗組織運(yùn)行要求編寫的源程序要立即上機(jī)編譯運(yùn)行來檢驗程序中存在的問題。通過運(yùn)行的結(jié)果驗證程序的功能是否實現(xiàn)。有一些系統(tǒng)類的方法、變量也需要上機(jī)實驗去了解它們的含義。四、實驗條件Windows XP， Visual Studio 2005五、實驗步驟using System;using System.Collections.Generic;using System.ComponentModel;using System.Data

2、;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace 學(xué)友計算器 public partial class Form1 : Form public Form1() InitializeComponent(); private string fh = "" private string first = "" private void button1_Click(object sender, EventArgs e) tex

3、tBox1.Text = textBox1.Text+ "1" private void button2_Click(object sender, EventArgs e) textBox1.Text = textBox1.Text + "2" private void button3_Click(object sender, EventArgs e) textBox1.Text = textBox1.Text + "3" private void button4_Click(object sender, EventArgs e) t

4、extBox1.Text = textBox1.Text + "4" private void button5_Click(object sender, EventArgs e) textBox1.Text = textBox1.Text + "5" private void button6_Click(object sender, EventArgs e) textBox1.Text = textBox1.Text + "6" private void button7_Click(object sender, EventArgs e

5、) textBox1.Text = textBox1.Text + "7" private void button8_Click(object sender, EventArgs e) textBox1.Text = textBox1.Text + "8" private void button9_Click(object sender, EventArgs e) textBox1.Text = textBox1.Text + "9" private void button10_Click(object sender, EventAr

6、gs e) textBox1.Text = textBox1.Text + "0" private void buttondot_Click(object sender, EventArgs e) if (textBox1.Text.IndexOf(".") < 0) textBox1.Text += "." /如果textBox1中的“.”個數(shù)小于0（即沒有），則在數(shù)后面加一個“.” else /如果textBox1中有了一個以上的“.”，則什么也不做 private void buttonFs_Click(object se

7、nder, EventArgs e) /表示正負(fù)數(shù) textBox1.Text = Convert.ToString(Convert .ToDouble (this.textBox1.Text) * -1); private void buttonbs_Click(object sender, EventArgs e) /退格 if (textBox1.Text = "") textBox1.Text = "" else textBox1.Text = textBox1.Text.Substring(0, textBox1.Text.Length - 1

8、); private void buttonClear_Click(object sender, EventArgs e) textBox1.Text = "" private void buttonAdd_Click(object sender, EventArgs e) first = textBox1.Text; textBox1.Text = "" fh = "+" private void buttonsub_Click(object sender, EventArgs e) first = textBox1.Text; t

9、extBox1.Text = "" fh = "-" private void buttonMul_Click(object sender, EventArgs e) first = textBox1.Text; textBox1.Text = "" fh = "*" private void buttonDis_Click(object sender, EventArgs e) first = textBox1.Text; textBox1.Text = "" fh = "/&quo

10、t; private void buttonQy_Click(object sender, EventArgs e) first = textBox1.Text; textBox1.Text = "" fh = "%" private void buttonx2_Click(object sender, EventArgs e) if (textBox1.Text = "") textBox1.Text = "" else first = textBox1.Text; textBox1.Text = Convert

11、.ToString(Convert.ToDouble(textBox1.Text) * Convert.ToDouble(textBox1.Text); private void buttonsqrt_Click(object sender, EventArgs e) if (textBox1.Text = "") textBox1.Text = "" else first = textBox1.Text; if (Convert.ToDouble(first) < 0) MessageBox.Show("開平方根的數(shù)不能小于0，請重新輸

12、入", "錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error); else textBox1.Text = Convert.ToString(Math.Sqrt(Convert.ToDouble(first); private void buttonDy_Click(object sender, EventArgs e) if (textBox1.Text = "") textBox1.Text = "" else switch (fh) case "+": t

13、extBox1.Text = Convert.ToString(Convert.ToDouble(first) + Convert.ToDouble(textBox1.Text); break; case "-": textBox1.Text = Convert.ToString(Convert.ToDouble(first) - Convert.ToDouble(textBox1.Text); break; case "*": textBox1.Text = Convert.ToString(Convert.ToDouble(first) * Convert.ToDouble(textBox1.Text); break; case "/": if (Convert.ToDouble(textBox1.Text) = 0) MessageBox.Show("除數(shù)不能為0", "錯誤", MessageBoxButtons.OK, MessageBoxIcon.Error); else textBox1.Text = Convert.ToString(Convert.ToDo