前端代码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<!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>
<br/>
<asp:button ID="Button1" runat="server" text="实例三确定" onclick="Button1_Click" />
</div>
<hr/>
<br/>
<p>拥有相同属性的na组</p>
<asp:RadioButton ID="Rn1" runat="server" Text= "猫" GroupName="na"/>
<asp:RadioButton ID="Rn2" runat="server" Text= "狗" GroupName="na" />
<asp:RadioButton ID="Rn3" runat="server" Text= "鼠" GroupName="na" />
<asp:RadioButton ID="Rn4" runat="server" Text= "鱼" GroupName="na" />
通过按钮来测试选中什么动物<br/>
<asp:Button ID="Button2" runat="server" Text="选中了什么动物"
onclick="Button2_Click" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<hr/>
<br/>
请输入0-120的任意数字:
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:Button ID="Button3" runat="server" Text="确定"
onclick="Button3_Click" /><br/>
<asp:Label ID="Label1" runat="server" ForeColor="Red"></asp:Label><br/>
<asp:RadioButton ID="Ran1" runat="server" Text = "不及格" GroupName = "yz"/>
<asp:RadioButton ID="Ran2" runat="server" Text = "及格" GroupName = "yz"/>
<asp:RadioButton ID="Ran3" runat="server" Text = "良好" GroupName = "yz"/>
<asp:RadioButton ID="Ran4" runat="server" Text = "优秀" GroupName = "yz"/>
<br/>
<br/>
<div style = "border:1px solid red;180px;">
谁最能吃<br /><br />
<asp:RadioButton ID="R1" runat="server" Text = "孙玉滨" GroupName = "key" AutoPostBack = "true" OnCheckedChanged = "rr1" />
<asp:RadioButton ID="R2" runat="server" Text = "李小妹" GroupName = "key" AutoPostBack = "true" OnCheckedChanged = "rr2"/>
<asp:RadioButton ID="R3" runat="server" Text = "李二妹" GroupName = "key" AutoPostBack = "true" OnCheckedChanged = "rr3"/>
<asp:RadioButton ID="R4" runat="server" Text = "李三妹" GroupName = "key" AutoPostBack = "true" OnCheckedChanged = "rr4"/>
<br/>
<br/>
<asp:Label ID="Label2" runat="server" Text=""><br/>
</asp:Label><asp:Button ID="Button" runat="server" Text="提交" Height = "53px"
Width = "113px" onclick="Button_Click"/>
</div>
</form>
</body>
</html>
后端代码:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
int s = 0;
for (int i = 1; i <= 10; i++)
{
s += i;
}
Response.Write("1到10的和为" + s.ToString());
}
protected void Button2_Click(object sender, EventArgs e)
{
if (Rn1.Checked) {TextBox1.Text = "你选中了："+Rn1.Text;}
if (Rn2.Checked) {TextBox1.Text = "你选中了："+Rn2.Text;}
if (Rn3.Checked) {TextBox1.Text = "你选中了："+Rn3.Text;}
if (Rn4.Checked) { TextBox1.Text = "你选中了：" + Rn4.Text; }
}
protected void Button3_Click(object sender, EventArgs e)
{
//将文本框的值转化成 浮点型
double num = -1;
//每次运行之前要清空所选中的文本框
Label1.Text = "";
Ran1.Checked = false;
Ran2.Checked = false;
Ran3.Checked = false;
Ran4.Checked = false;
//先将文本框的值 转换成浮点型，再将其赋值给num，
//因为num事先已经是-1了，
try{num = double.Parse(TextBox2.Text);}
catch {}
if (num < 0 || num > 120) {
Label1.Text = "请输入正确的数字";
}
else{
if(num<60){Ran1.Checked = true;}
if(num>60&&num<80){Ran2.Checked = true;}
if(num>80&&num<100){Ran3.Checked = true;}
if(num>100&&num<120){Ran4.Checked = true;}
}
}
protected void rr1(object sender, EventArgs e)
{
if (R1.Checked == true)
{ Label2.Text = "你选择了" + R1.Text; }
}
protected void rr2(object sender, EventArgs e)
{
if (R2.Checked == true)
{ Label2.Text = "你选择了" + R2.Text; }
}
protected void rr3(object sender, EventArgs e)
{
if (R3.Checked == true)
{ Label2.Text = "你选择了" + R3.Text; }
}
protected void rr4(object sender, EventArgs e)
{
if (R4.Checked == true)
{ Label2.Text = "你选择了" + R4.Text; }
}
protected void Button_Click(object sender, EventArgs e)
{
if (R1.Checked == false && R2.Checked == false && R3.Checked == false && R4.Checked == false)
{ Response.Write("<script>alert('请选择正确答案')</script>"); }
else if (R2.Checked)
{ Response.Write("<script>alert('答对了')</script>"); }
else {
Response.Write("<script>alert('答错了')</script>");
}
}
}