如何能够使计算器连续运算加减乘除？下面的代码只能生成一个只能运算一次加减乘除的计算器
using System;using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class _Default : System.Web.UI.Page
{
public static int a, b, c, d;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button9_Click(object sender, EventArgs e)
{
c =c*10+1;
TextBox1.Text =c.ToString();
}
protected void Button10_Click(object sender, EventArgs e)
{
c = c*10+2;
TextBox1.Text = c.ToString();
}
protected void Button11_Click(object sender, EventArgs e)
{
c = c * 10 + 3;
TextBox1.Text = c.ToString();
}
protected void Button5_Click(object sender, EventArgs e)
{
c = c * 10 + 4;
TextBox1.Text = c.ToString();
}
protected void Button6_Click(object sender, EventArgs e)
{
c = c * 10 + 5;
TextBox1.Text = c.ToString();
}
protected void Button7_Click(object sender, EventArgs e)
{
c = c * 10 + 6;
TextBox1.Text = c.ToString();
}
protected void Button1_Click(object sender, EventArgs e)
{
c = c * 10 + 7;
TextBox1.Text = c.ToString();
}
protected void Button2_Click(object sender, EventArgs e)
{
c = c * 10 +8;
TextBox1.Text = c.ToString();
}
protected void Button3_Click(object sender, EventArgs e)
{
c = c * 10 +9;
TextBox1.Text = c.ToString();
}
protected void Button0_Click(object sender, EventArgs e)
{
c = c * 10 + 0;
TextBox1.Text = c.ToString();
}
protected void Plus_Click(object sender, EventArgs e)
{
string str = ((Button)sender).Text;
Session["s"] = TextBox1.Text;
Session["str"] = str;
TextBox1.Text = "";
}
protected void Button4_Click(object sender, EventArgs e)
{
a = c;
b = 1;
TextBox1.Text = "";
c = 0;
}
protected void Button8_Click(object sender, EventArgs e)
{
a = c;
b = 2;
TextBox1.Text = "";
c = 0;
}
protected void Button12_Click(object sender, EventArgs e)
{
a = c;
b = 3;
TextBox1.Text = "";
c = 0;
}
protected void Button13_Click(object sender, EventArgs e)
{
a = c;
b = 4;
TextBox1.Text = "";
c = 0;
}
protected void Button16_Click(object sender, EventArgs e)
{
switch (b)
{
case 1:
d = a + dzcc;
TextBox1.Text = d.ToString();
break;
case 2:
d = a - c;
TextBox1.Text = d.ToString();
break;
case 3:
d = a * c;
TextBox1.Text = d.ToString();
break;
case 4:
d = a / c;
TextBox1.Text = d.ToString();
break;
case 0:
TextBox1.Text = "对不起";
break;
}
}
protected void Button15_Click(object sender, EventArgs e)
{
TextBox1.Text = null;
a = 0; b = 0; c = 0; d = 0;
}
}
--------------------编程问答-------------------- wuyq11(人生如梦) 给出的代码
--------------------编程问答-------------------- 我是个初学的，我看不明白你的代码，但我很感谢你回答
public class Operation
{
private double _numberA = 0;
private double _numberB = 0;
public double NumberA
{
get
{
return _numberA;
}
set
{
_numberA = value;
}
}
public double NumberB
{
get
{
return _numberB;
}
set
{
_numberB = value;
}
}
public virtual double GetResult()
{
double result = 0;
return result;
}
public static string checkNumberInput(string currentNumber, string inputString)
{
string result = "";
if (inputString == ".")
{
if (currentNumber.IndexOf(".") < 0)
{
if (currentNumber.Length == 0)
result = "0" + inputString;
else
result = currentNumber + inputString;
}
}
else if (currentNumber == "0")
{
result = inputString;
}
else
{
result = currentNumber + inputString;
}
return result;
}
}
class OperationAdd : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA + NumberB;
return result;
}
}
class OperationSub : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA - NumberB;
return result;
}
}
class OperationMul : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberA * NumberB;
return result;
}
}
class OperationDiv : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB == 0)
throw new Exception("除数不能为0。");
result = NumberA / NumberB;
return result;
}
}
class OperationSqr : Operation
{
public override double GetResult()
{
double result = 0;
result = NumberB * NumberB;
return result;
}
}
class OperationSqrt : Operation
{
public override double GetResult()
{
double result = 0;
if (NumberB < 0)
throw new Exception("负数不能开平方根。");
result = Math.Sqrt(NumberB);
return result;
}
}
class OperationReverse : Operation
{
public override double GetResult()
{
double result = 0;
result = -NumberB;
return result;
}
}
public class OperationFactory
{
public static Operation createOperate(string operate)
{
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;
}
case "sqr":
{
oper = new OperationSqr();
break;
}
case "sqrt":
{
oper = new OperationSqrt();
break;
}
case "+/-":
{
oper = new OperationReverse();
break;
}
}
return oper;
}
private void buttonAdd_Click(object sender, EventArgs e)
{
if (txtShow.Text != "")
{
oper = OperationFactory.createOperate(((Button)sender).Text);
oper.NumberA = Convert.ToDouble(txtShow.Text);
bOperate = true;
}
}
private void buttonEqual_Click(object sender, EventArgs e)
{
if (txtShow.Text != "")
{
if (((Button)sender).Text != "=")
{
oper = OperationFactory.createOperate(((Button)sender).Text);
}
oper.NumberB = Convert.ToDouble(txtShow.Text);
txtShow.Text = oper.GetResult().ToString();
bOperate = true;
}
}
补充：.NET技术 , C#
