.net-计算器

功能看界面就是了，
//后台代码C#
using System;
using System.Collections.Generic;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Calculator2
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{

}

protected void Compute(object sender, EventArgs e)
{
Double Pi = Math.PI;
Double num1;
Double num2;
String str1,str2,str3;
// Double result;
int len;
// Char[] c = { '+', '-', '*', '/' };

if (sender.Equals(BtnEqual))
{
str1 = Loadstr1.Text;
len = str1.Length;
str2 =Loadstr2.Text;
str3 = Loadstr3.Text;
// char[] strArry = str1.ToCharArray();
num1 =Convert.ToDouble(str3);
num2 = Convert.ToDouble(txtResult .Text);
if (txtResult.Text == "")
{
txtResult.Text = " ";
}
// num2=con
switch (str1)
{
case "+": txtResult.Text = Convert.ToString( num2 + num1); break;
case "-": txtResult.Text = Convert.ToString( num1 - num2); break;
case "*": txtResult.Text = Convert.ToString( num1 * num2); break;
case "/":
if (num2 == 0) txtResult.Text = "除数不能为0";
else txtResult.Text = Convert.ToString(num1 / num2); break;
}
//num2 = result;
// txtResult.Text = Convert.ToString(num2);
}

if (sender.Equals(BtnAdd))
{
Loadstr1.Text ="+";
Loadstr3.Text = txtResult.Text;
txtResult.Text = "";
}

if (sender.Equals(BtnSub))
{
Loadstr1.Text ="-";
Loadstr3.Text = txtResult.Text;
txtResult.Text = "";
}

if (sender.Equals(BtnMul))
{
Loadstr1.Text = "*";
Loadstr3.Text = txtResult.Text;
txtResult.Text = "";
}

if (sender.Equals(BtnDivide))
{
Loadstr1.Text = "/";
Loadstr3.Text = txtResult.Text;
txtResult.Text = "";
}

if (sender.Equals(Btn1))
{
if (txtResult.Text == "0")
txtResult.Text = "1";
else txtResult.Text += "1";
Loadstr2.Text = txtResult.Text;
}

if (senderEquals(Btn2))
{
if (txtResult.Text == "0")
txtResult.Text = "2";
else txtResult.Text += "2";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn3))
{
if (txtResult.Text == "0")
txtResult.Text = "3";
else txtResult.Text += "3";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn4))
{
if (txtResult.Text == "0")
txtResult.Text = "4";
else txtResult.Text += "4";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn5))
{ if (txtResult.Text == "0")
txtResult.Text = "5";
else txtResult.Text += "5";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn6))
{
if (txtResult.Text == "0")
txtResult.Text = "6";
else txtResult.Text += "6";
Loadstr2.Text = txtResult.Text;
}
if (sender.Equals(Btn7))
{
if (txtResult.Text == "0")
txtResult.Text = "7";
else txtResult.Text += "7";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn8))
{
if (txtResult.Text == "0")
txtResult.Text = "8";
else txtResult.Text += "8";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn9))
{
if (txtResult.Text == "0")
txtResult.Text = "9";
else txtResult.Text += "9";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(Btn0))
{
if (txtResult.Text == "0")
txtResult.Text = "0";
else txtResult.Text += "0";
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(BtnDot))
{
if (txtResult.Text != "")
//txtResult.Text = "";
if (txtResult.Text.Contains("."))
txtResult.Text = txtResult.Text;
else txtResult.Text += ".";

Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(BtnClr))
{
txtResult.Text = "";
Loadstr1.Text = "";
Loadstr2.Text = "";
Loadstr3.Text = "";
}

if (sender.Equals(BtnPi))
{
txtResult.Text = Convert.ToString(Pi);
Loadstr2.Text = txtResult.Text;
}

if (sender.Equals(BtnSquareRoot))
txtResult.Text = Convert.ToString(Math.Sqrt(Convert.ToDouble(txtResult.Text)));

if (sender.Equals(BtnSquare))
txtResult.Text = Convert.ToString(Convert.ToDouble(txtResult.Text) * Convert.ToDouble(txtResult.Text));

}
}
}

//前台代码
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Calculator2._Default" %>

迷你计算器

#container
{
border-bottom: solid 1px #5c9cc0;
border-top: solid 1px #5c9cc0;
border-left: solid 1px #5c9cc0;
border-right: </p><p style='height:0px;padding:0;overflow:hidden'>24、solid 1px #5c9cc0;
font-size: 14px;
width: 400px;
height: 300px;
text-align: center;
background-color: #eef3f7;
margin: 0px auto;
}
.Button
{
border-right: #7b9ebd 1px solid;
</p><p style='height:0px;padding:0;overflow:hidden'>25、 padding-right: 2px;
border-top: #7b9ebd 1px solid;
padding-left: 2px;
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#cecfde);
border-left: #7b9ebd 1px solid;
cursor: hand;
</p><p style='height:0px;padding:0;overflow:hidden'>26、 color: black;
padding-top: 2px;
border-bottom: #7b9ebd 1px solid;
width: 50px;
height: 30px;
font-size: 14px;
}
.TextBox
{
width: 310px;
height: 30px;
text-a</p><p style='height:0px;padding:0;overflow:hidden'>27、lign: right;
vertical-align: bottom;
font-size: 20px;
}
#title
{
font-family: 黑体;
font-size: 18px;
height: 18px;
filter: blur(strength=2,direction=135);
color: #6666ff;
}
</p><p style='height:0px;padding:0;overflow:hidden'>28、

 ton ID="BtnClr" runat="server" CssClass="Button" Text="清除" OnClick="Compute"/>

&nbsp;

 ID="Btn9" runat="server" CssClass="Button" Text="9" OnClick="Compute"/>

 ID="BtnSquare" runat="server" CssClass="Button" Text="平方" OnClick="Compute"/>

l
ID="Loadstr3" runat="server" Visible="False">
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