using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace Windows_ji_suan_qi
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void button3_Click(object sender, EventArgs e) //输入数字1
{
textBox1.Text = textBox1.Text + 1;
}
private void button4_Click(object sender, EventArgs e) //输入数字2
{
textBox1.Text = textBox1.Text + 2;
}
private void button5_Click(object sender, EventArgs e) //输入数字3
{
textBox1.Text = textBox1.Text + 3;
}
private void button6_Click(object sender, EventArgs e) //输入数字4
{
textBox1.Text = textBox1.Text + 4;
}
private void button7_Click(object sender, EventArgs e) //输入数字5
{
textBox1.Text = textBox1.Text + 5;
}
private void button8_Click(object sender, EventArgs e) //输入数字6
{
textBox1.Text = textBox1.Text + 6;
}
private void button11_Click(object sender, EventArgs e) //输入数字7
{
textBox1.Text = textBox1.Text + 7;
}
private void button10_Click(object sender, EventArgs e) //输入数字8
{
textBox1.Text = textBox1.Text + 8;
}
private void button9_Click(object sender, EventArgs e) //输入数字9
{
textBox1.Text = textBox1.Text + 9;
}
private void button1_Click(object sender, EventArgs e) //输入数字0
{
textBox1.Text = textBox1.Text + 0;
}
private void button2_Click(object sender, EventArgs e) //输入 点
{
textBox1.Text = textBox1.Text + ".";
}
private void textBox1_TextChanged_1(object sender, EventArgs e) //设置长度 为16
{
textBox1.MaxLength = 16;
}
private void button14_Click(object sender, EventArgs e) //清零按钮
{
oper.NumberA = 0;
oper.NumberB = 0;
textBox1.Text = "";
textBox1.Focus();
}
private void button12_Click(object sender, EventArgs e) //撤销按键
{
string temp = null;
temp = textBox1.Text;
if (temp.Length < 1)
return;
textBox1.Text = temp.Substring(0, temp.Length - 1);
}
private void button13_Click(object sender, EventArgs e) //按钮+
{
oper.NumberA = Convert.ToDouble(textBox1.Text); //转换变量 并赋值
textBox1.Text = ""; //置空
textBox1.Focus(); //聚焦
oper = OperationFactory.createOperate("+"); //传值
}
private void button15_Click(object sender, EventArgs e)//按钮-
{
oper.NumberA = Convert.ToDouble(textBox1.Text);
textBox1.Text = "";
textBox1.Focus();
oper = OperationFactory.createOperate("-");
}
private void button16_Click(object sender, EventArgs e) //按钮*
{
oper.NumberA = Convert.ToDouble(textBox1.Text);
textBox1.Text = "";
textBox1.Focus();
oper = OperationFactory.createOperate("*");
}
private void button17_Click(object sender, EventArgs e) //按钮 ／
{
oper.NumberA = Convert.ToDouble(textBox1.Text);
textBox1.Text = "";
textBox1.Focus();
oper = OperationFactory.createOperate("/");
}
private void button18_Click(object sender, EventArgs e) //按钮＝
{
oper.NumberB = Convert.ToDouble(textBox1.Text);
double result = oper.GetResult();
textBox1.Text = result.ToString();
}
/**/
///<summary>
///运算类工厂
///</summary>
Operation oper = new Operation();
public class OperationFactory
{
public static Operation createOperate(string operate)
{
/*
只有用了static后才能OperationFactory.createOperate("-");
不然要先OperationFactory a=new OpertationFactory();
a.cerateOperate("-");
*/
Operation oper = null;
switch (operate)
{
case "+":
oper = new OperationAdd();
break;
case "-":
oper = new OperationSub();
break;
case "*":
oper = new OperationMul();
break;
case "/":
oper = new OperationDiv();
break;
}
return oper;
}
}
/**/
///<summary>
///运算类
///</summary>
public class Operation
{
private static double _numberA = 0;
private static double _numberB = 0;
/**/
///<summary>
///数字A
///</summary>
public double NumberA
{
get { return _numberA; }
set { _numberA = value; }
}
///<summary>
///数字B
///</summary>
public double NumberB
{
get { return _numberB; }
set { _numberB = value; }
}
///<summary>
///得到运算结果
///</summary>
///<returns></returns>
public virtual double GetResult()
{
double result = 0;
return result;
}
}
///<summary>
///加法类
///</summary>
class OperationAdd : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA + NumberB;
return result;
}
}
///<summary>
///减法类
///</summary>
class OperationSub : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA - NumberB;
return result;
}
}
///<summary>
///乘法类
///</summary>
class OperationMul : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA * NumberB;
return result;
}
}
///<summary>
///除法类
///</summary>
class OperationDiv : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB == 0) //判断除数是否为0
{
MessageBox.Show("输入的除数不能为0，请重新输入！", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
result = NumberA / NumberB;
return result;
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e) //退出 按钮
{
DialogResult aaa = MessageBox.Show("真的要退出吗？", "退出", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning);
if (aaa == DialogResult.Cancel)
e.Cancel = true;
}
}
}
