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C#在ASP.NET4.5框架下的首次网页应用

發布時間：2023/12/1 C# 26 豆豆

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運行效果預覽:

先看實踐應用要求:

1．編寫一個函數，用于計算1！+2！+3！+4！+5！，在控制臺或頁面輸出運行結果。

2．在控制臺或頁面輸出九九乘法表。

3．輸入10個以內的整數，輸出該組整數的降序排列，要求采用數組實現。

4．計算兩個數的商，在控制臺或頁面輸出結果，要求包含異常處理。

5．定義一個汽車類，該類具有重量和速度屬性；再定義一個跑車類，該類繼承汽車類的屬性，并擁有自己的顏色屬性；然后聲明一個汽車類的對象和一個跑車類的對象，并把它們的屬性輸出到控制臺上。

6．假設某動物園管理員每天需要給他所負責飼養的獅子、猴子和鴿子喂食。請用一個程序來模擬他喂食的過程。

要求：

（1）飼養員喂食時，不同動物執行不同的吃的功能，例如獅子吃肉、猴子吃香蕉、鴿子吃大米等。

（2）飼養員喂動物時，不能使用判斷語句判斷動物類型。

（3）使用虛方法或抽象方法實現喂養不同動物的多態，不能使用方法重載。

提示：需要建一個動物類，動物類有一個虛的或抽象的吃方法，動物類下面有幾個子類，不同的子類重寫父類的吃方法。飼養員類提供喂食方法。然后，在Main方法中一一調用吃的方法。

前端practice.aspx源碼:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="practice.aspx.cs" Inherits="practice" enableEventValidation="false"%>

<!DOCTYPE html>

?<title>實驗二 C#程序設計練習</title>

??????? button{

??????????? width:120px;

??????????? height:30px;

??????????? background:#9933FA;

??????????? color:#fff;

??????? }

??????? button:hover{

??????????? background:#9A32CD;

??????? }

??????? div{

??????????? text-align:center;

??????? }

??????? h2{

??????????? text-align:center;

??????????? color:red;

??????? }

??????? span{

??????????? color:gray;

??????? }

??????? textarea{

??????????? width:900px;

??????????? height:400px;

??????????? font-size:20px;

??????? }

??? </style>

</head>

??? <form id="form1" runat="server">

??????? <br /><br />

??? <div id="div_btn" runat="server">

??????? <button id="Button1" onserverclick="factorial" runat="server">factorial</button>

??????? <button id="Button2" onserverclick="multiplication" runat="server">multiplication</button>

??????? <button id="Button3" onserverclick="bubbleSort" runat="server">bubbleSort</button>

??????? <button id="Button4" onserverclick="division" runat="server">division</button>

??????? <button id="Button5" onserverclick="car" runat="server">car</button>

??????? <button id="Button6" onserverclick="zoo" runat="server">zoo</button>

??? </div>

??????? <br />

??????? <div id="div_bubble" runat="server" EnableViewState="false" visible="false" >

??????????? 輸入參數：<asp:TextBox id="TextNumber" runat="server" OnTextChanged="bubbleBtnClick" AutoPostBack ="true"></asp:TextBox>   ??????????? <asp:Label ID="eMesg_bubble" runat="server">10個以內整數,空格分隔,Enter/Tap鍵執行排序</asp:Label><br /><br />

??????? </div>

??????? <div id="div_division" runat ="server" EnableViewState="false" visible="false" >

??????????? 輸入被除數：<asp:TextBox id="textA" runat="server"></asp:TextBox>  

??????????? 輸入除數：<asp:TextBox id="textB" runat="server" OnTextChanged="divisionBtnClick" AutoPostBack ="true"></asp:TextBox> 

??????????? <asp:Label ID="eMesg_division" runat="server">Enter/Tap鍵執行計算</asp:Label><br /><br />

???????? ??????? </div>

??? <div id="div_view" runat="server" EnableViewState="false">

??????? </div>

??????? <div>

??????????? <textarea id="displayArea" runat="server" rows="1" cols="1">輸出結果將在此處顯示.......</textarea>

??????? </div>

??? </form>

</body>

</html>

后端practice.aspx.cs源碼:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class practice : System.Web.UI.Page {

??? protected void Page_Load(object sender, EventArgs e)

??? {

??????? Response.Write("<h2>單擊按鈕分別顯示各個練習題代碼運行結果</h2>");

??????? div_division.Visible = false;

??????? div_bubble.Visible = false;

??? }

??? protected void factorial(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????????? div_view.InnerHtml = "Follow will calculate the union of \"1!+2!+3!+4!+5!\":";

??????? }

??????? factorial calculate = new factorial();

??????? displayArea.InnerHtml = "1!+2!+3!+4!+5!=" + calculate.add().ToString();

??? }

??? protected void multiplication(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false; ??????????? div_division.Visible = false;

??????? }

??????? int i, j;

??????? displayArea.InnerHtml = "";???????????? //擦除前一次對textarea的寫入記錄

??????? for (i = 1; i < 10; i++)

??????? {

??????????? for (j = 1; j <= i; j++)

??????????? {

??????????????? displayArea.InnerHtml+=j+"*"+i+"="+(i * j)+"\t";

??????????? }

??????????? displayArea.InnerHtml += "\n";

??????? }

??? }

??? protected void bubbleSort(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????? }

??????? div_bubble.Visible = true;

??????? displayArea.InnerHtml = "bubbleSort";

??? }

??? protected void bubbleBtnClick(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????? }

??????? div_bubble.Visible = true;

??????? ??????? String str=TextNumber.Text;

??????? //String[] a=str.Split();//稍候再寫,未完

??????? /* ??????? int i = 0, j=1; ??????? int[] number = new int[12]; ??????? while (i < str.Length) ??????? { ??????????? if (str[i].Equals(' ')) ??????????? { ??????????????? i++; ??????????? } ??????????? else ??????????? { ??????????????? number[j] = int.Parse (str[i].ToString ()); ??????????? } ??????? } ??????? */

??????? displayArea.InnerHtml = "";???? //擦除前一次textarea輸出記錄

??????? displayArea.InnerHtml =str;

??? }

??? protected void division(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????? }

??????? div_division.Visible = true;

??????? displayArea.InnerHtml = "兩數求商,輸入被除數與除數后,按 Enter / Tap 鍵執行運算";

??? }

??? protected void divisionBtnClick(object sender,EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????? }

??????? float a = float.Parse(textA.Text);

??????? float b = float.Parse(textB.Text);

??????? float result;

??????? div_division.Visible = true;

??????? try

??????? {

??????????? if (b == 0)

??????????????? throw new Exception("Error:DivideByZeroException[除數為零]");

??????????? result = a / b;

??????????? displayArea.InnerHtml = a + "/" + b + "=";

??????????? displayArea.InnerHtml += a / b;

??????? }

??????? catch (Exception error)

??????? {

??????????? eMesg_division.Text = error.Message;

??????? }

??? }

??? protected void car(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? { ?

?????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????? }

??????? car cardemo = new car();

??????? supercar supercardemo = new supercar();

??????? cardemo.set(2500, 180);

??????? displayArea.InnerHtml = "汽車類的質量：" + cardemo.weight + "Kg，汽車類的速度：" + cardemo.speed + "Km/h\n";

??????? supercardemo.color = "red";

??????? cardemo.set(2500, 180);

??????? supercardemo.set(2000, 250);

??????? displayArea.InnerHtml +="超跑類的重量:"+supercardemo.weight+"Kg,超跑類的速度:"+supercardemo.speed+"Km/h,超跑的顏色:"+supercardemo.color; ??? }

??? protected void zoo(object sender, EventArgs e)

??? {

??????? if (IsPostBack)

??????? {

??????????? div_bubble.Visible = false;

??????????? div_division.Visible = false;

??????? }

??????? feeder feederdemo = new feeder();

??????? animals animalsdemo = new animals();

??????? String food = "null";

??????? String foodmeat,foodbanana,foodrice,meat,banana,rice;

??????? food = "meat";

??????? foodmeat=feederdemo.feed(food);

??????? animalsdemo = new lion();

??????? meat=animalsdemo.eat();

??????? displayArea.InnerHtml = foodmeat + "\n" + meat + "\n";

??????? food = "banana";

??????? foodbanana=feederdemo.feed(food);

??????? animalsdemo = new monkey();

??????? banana=animalsdemo.eat();

??????? displayArea.InnerHtml += foodbanana + "\n" + banana + "\n";

??????? food = "rice";

??????? foodrice=feederdemo.feed(food);

??????? animalsdemo = new pigeon();

??????? rice=animalsdemo.eat();

??????? displayArea.InnerHtml += foodrice + "\n" + rice + "\n";

??????? //displayArea.InnerHtml = foodmeat + "\n" + meat + "\n" + foodbanana + "\n" + banana + "\n" + foodrice + "\n" + rice;

??? }

}

//1!+2!+3!+4!+5!

class factorial {

??? public int add()

??? {

??????? int i = 1, temp = 1, sum = 0;

??????? for (; i < 6; i++)

??????? {

??????????? temp = i * temp;

??????????? sum = sum + temp;

??????? }

??????? return sum;

??? }

}

//bubbleSort

/* ?class bubbleSort ??? {

??????? public void sort(int n)

??????? {

??????????? int i, j;

??????????? for (i = 1; i < n; i++)

??????????? {

??????????????? for (j = i; j < n; j++)

??????????????? {

??????????????????? if (a[i] > a[j])

??????????????????? { ?

?????????????????????? a[0] = a[i]; ??????????????????????? a[i] = a[j]; ??????????????????????? a[j] = a[0];

??????????????????? }

??????????????? }

??????????? }

??????? }

??? } */

//car class

class car

{

??? public float weight;

??? public float speed;

??? public void set(float weight, float speed)

??? {

???????? this.weight = weight;

??????? this.speed = speed;

??? }

}

class supercar : car {

??? public String color;

}

//zoo

??? class feeder

??? {

??????? public String feed(String food)

??????? {

??????????? return (food);

??????? }

??? }

??? class animals

??? {

??????? public virtual String eat()

??????? {

??????????? return "feed animals with food!";

??????? }

??? }

??? class lion : animals

??? {

??????? public override String eat()

??????? {

??????????????? return "\'獅子\'吃的是? meat? ......";

??????? }

??? }

??? class monkey : animals

??? {

??????? public override String eat()

??????? {

??????????????? return "啾~,俺老孫來也,\'猴子\'就愛吃? banana? ......";

??????? }

??? }

??? class pigeon : animals

??? {

??????? public override String eat()

??????? {

??????????????? return "聽~,是\'鴿子\'在啄食? rice? ......";

??????? }

??? } ?

網頁初次打開運行效果如圖:

單擊按鈕分別顯示各個練習題代碼運行結果

factorial multiplication bubbleSort division car zoo
輸出結果將在此處顯示.......

轉載于:https://www.cnblogs.com/360-782/p/ASP_NET.html

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