註：課後題***7題（除第壹題和第九題），其中5和8由於還有些問題沒有解決，就沒有將答案附上。這裏的答案僅供參考，希望在上機之前能自己練習壹下。程序有很多地方可以改，不要照搬。
（2）設計壹個網頁，其中包含TextBox和Button控件各壹個。當在TextBox中輸入壹個成績，再單擊Button控件時在網頁上輸出相應的等級信息。
.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="question2.aspx.cs" Inherits="homework_chap3.question2" %>
<!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">請輸入壹個成績</asp:TextBox>
<asp:Label ID="Label1" runat="server" Text="Label">待顯示</asp:Label>
<br />
<asp:Button ID="Button1" runat="server" OnClick = "btmSubmit_Click" Text="檢測" />
</div>
</form>
</body>
</html>
.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace homework_chap3
{
public partial class question2 : System.Web.UI.Page
{
protected void btmSubmit_Click(object sender, EventArgs e)
{
int iInput = int.Parse(TextBox1.Text);
if (iInput > 100)
Label1.Text = "請輸入正確的分數";
else if(iInput >= 90)
Label1.Text = "優秀";
else if (iInput >= 80)
Label1.Text = "良好";
else if (iInput >= 60)
Label1.Text = "及格";
else if (iInput >= 0)
Label1.Text = "不及格";
else
Label1.Text = "請輸入正確的分數";
}
}
}
效果
（3）在網頁上輸出九九乘法表
.aspx.cs（.aspx源文件可以不作處理）
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace homework_chap3
{
public partial class question3 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
for (int i=1; i<= 9; i++)
{
for (int j = 1; j <= i; j++)
{
Response.Write(i + "*" + j + "=" + (i * j) + "");
}
Response.Write("</br>");
}
}
}
}
效果
（4）在網頁上輸出如下形狀：
A
BBB
CCCCC
DDD
E
.aspx.cs（.aspx源文件可以不作處理）
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace homework_chap3.questions
{
public partial class question4 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
String[] s = { "A", "B", "C", "D", "E" };
for (int i = 1; i <= 3; i++)
{
for (int j = 1; j <= 3 - i; j++)
{
Response.Write("?");
}
for(int k = 1; k <= 2*i-1; k++)
{
Response.Write(s[i-1]);
}
Response.Write("</br>");
}
for (int i = 1; i < 3; i++)
{
for (int j = 1; j <= i; j++)
{
Response.Write("?");
}
for (int k = 1; k <= 5 - 2*i; k++)
{
Response.Write(s[i + 2]);
}
Response.Write("</br>");
}
}
}
}
效果
（6）設計壹個網頁，其中包含兩個TextBox和壹個Button控件。當在TextBox中各輸入壹個數值，再單擊Button控件時在網頁上輸出兩者相除的數值。（要求包含異常處理）
.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="question6.aspx.cs" Inherits="homework_chap3.questions.question6" %>
<!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:Label ID="Label1" runat="server" Text="Label">輸入壹個除數：</asp:Label>?
<asp:TextBox ID="TextBox1" runat="server" Width="104px"></asp:TextBox>
<br />
<asp:Label ID="Label2" runat="server" Text="Label">輸入壹個被除數：</asp:Label>?
<asp:TextBox ID="TextBox2" runat="server" Width="104px"></asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" OnClick="btm_click" Text="計算" />?
<asp:Label ID="Label3" runat="server" Text="Label">答案</asp:Label>
</div>
</form>
</body>
</html>
.aspx.ce
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace homework_chap3.questions
{
public partial class question6 : System.Web.UI.Page
{
protected void btm_click(object sender, EventArgs e)
{
int[] str = new int[1];
int iInput1 = int.Parse(TextBox1.Text);
int iInput2 = int.Parse(TextBox2.Text);
if (iInput2 == 0)
throw new Exception("除數不能為0");
else
Label3.Text = (iInput1 / iInput2).ToString();
}
}
}
效果
（7）設計壹個用於用戶註冊頁面的用戶信息類UserInfo，它包括兩個屬性：姓名（Name）、生日（Birthday）；壹個方法DecideAge：用於判斷用戶是否達到規定年齡，對大於等於18歲的在頁面上輸出“您是成人了！”，而小於18歲的在頁面上輸出“您還沒長大呢！”
.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="question7.aspx.cs" Inherits="homework_chap3.questions.question71" %>
<!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:Label ID="Label3" runat="server" Text="Label">?註冊</asp:Label>
<br /><br />
<asp:Label ID="Label1" runat="server" Text="Label">姓名</asp:Label>?
<asp:TextBox ID="TextBox1" runat="server">如“朱曉棟”</asp:TextBox>
<br />
<asp:Label ID="Label2" runat="server" Text="Label">生日</asp:Label>?
<asp:TextBox ID="TextBox2" runat="server">如“19890411”</asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" OnClick="btm_click" Text="註冊" />
</div>
</form>
</body>
</html>
.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace homework_chap3.questions
{
public partial class question71 : System.Web.UI.Page
{
protected void btm_click(object sender, EventArgs e)
{
int iInput2 = int.Parse (TextBox2.Text);
question7 que = new question7("zhu",19890411);
que.DecideAge(iInput2);
}
}
}
.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace homework_chap3.questions
{
public class question7
{
private string _Name;
private int _Brithday;
public string Name
{
get
{
return this._Name;
}
set
{
this._Name = value;
}
}
public int Brithday
{
get
{
return this._Brithday;
}
set
{
this._Brithday = value;
}
}
public question7(String name, int brithday)
{
this._Name = name;
this._Brithday = brithday;
}
public void DecideAge(int brithday)
{
if (20101001 - brithday < 180000)
throw new Exception("您還沒長大呢!");
else
throw new Exception("您是成人了!");
}
}
}
效果
是這個麽