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txf2004
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计算器

 
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WebJiSuanQi.aspx:

<%@ Page Xlanguage="C#" AutoEventWireup="true" CodeBehind="WebJiSuanQi.aspx.cs" Inherits="WebTableDemo.WebJiSuanQi" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server" Height="27px" Width="91px"></asp:TextBox>
<asp:DropDownList ID="DropDownList1" runat="server">
<asp:ListItem>+</asp:ListItem>
<asp:ListItem>-</asp:ListItem>
<asp:ListItem>*</asp:ListItem>
<asp:ListItem>/</asp:ListItem>
</asp:DropDownList>
<asp:TextBox ID="TextBox2" runat="server" height="27px" width="91px"></asp:TextBox>
<asp:Button ID="Button1"
runat="server" Text="=" Xonclick="Button1_Click" /><asp:TextBox ID="TextBox3" runat="server"
height="27px" width="91px"></asp:TextBox>

</div>
</form>
</body>
</html>

WebJiSuanQi.aspx.cs:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

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

}

protected void Button1_Click(object sender, EventArgs e)
{
double text1 = Convert.ToDouble(TextBox1.Text);
double text2 = Convert.ToDouble(TextBox2.Text);
if (DropDownList1.SelectedValue == "+")
{
TextBox3.Text = (text1 + text2).ToString();
}
else if (DropDownList1.SelectedValue == "-")
{
TextBox3.Text = (text1 - text2).ToString();
}
else if (DropDownList1.SelectedValue == "*")
{
TextBox3.Text = (text1 * text2).ToString();
}
else if(DropDownList1.SelectedValue == "/")
{
TextBox3.Text = (text1 / text2).ToString();
}
}
}
}

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