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" οnclick="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" οnclick="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" οnclick="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;width: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" οnclick="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>");}}
}
