1.A, Operation effect Chart
1.B, source code (main code summary)
/app_code/dbconnection.cs
/app_code/categoryinfo.cs
Copy Code code as follows:
Using System.Collections.Generic;
public class CategoryInfo
{
int CategoryID;
String CategoryName;
String Categorydesc;
Ilist<articleinfo> articles;
<summary>
1, sub nested data
</summary>
Public ilist<articleinfo> Articles
{
get {return articles;}
set {articles = value;}
}
public int CategoryID
{
get {return CategoryID;}
set {CategoryID = value;}
}
public string CategoryName
{
get {return CategoryName;}
set {CategoryName = value;}
}
public string Categorydesc
{
get {return categorydesc;}
set {Categorydesc = value;}
}
Public CategoryInfo ()
{
}
Public CategoryInfo (int categoryid, String CategoryName, string categorydesc,ilist<articleinfo> articles)
{
This.categoryid = CategoryID;
This.categoryname = CategoryName;
This.categorydesc = Categorydesc;
This.articles = articles;
}
}
/app_code/articleinfo.cs
/app_code/categoryoper.cs
Copy Code code as follows:
Using System.Data;
Using System.Data.SqlClient;
Using System.Collections.Generic;
public class Categoryoper
{
public static ilist<categoryinfo> SelectAll ()
{
ilist<categoryinfo> allcate = new list<categoryinfo> ();
String sql = "Select Category.categoryid,categoryname,categorydesc,id,title,author from category inner join article on CA Tegory.categoryid=article.categoryid ORDER by Category.categoryid ";
SqlConnection con = new DbConnection (). Con;
SqlCommand com = new SqlCommand ();
Com. Connection = con;
Com.commandtext = SQL;
Com.commandtype = CommandType.Text;
Con. Open ();
SqlDataReader SDR = com. ExecuteReader ();
int tempcategoryid=0;
CategoryInfo Cate=null;
while (SDR. Read ())
{
int CATEGORYID=SDR. GetInt32 (0);
Create a new Cate object if the category changes
if (Categoryid!=tempcategoryid)
{
Cate = new CategoryInfo (SDR. GetInt32 (0), SDR. GetString (1), SDR. GetString (2), New list<articleinfo> ());
Allcate. ADD (Cate);
Tempcategoryid = CategoryID; Pay the new category number to the identification
}
Articleinfo art = new Articleinfo (SDR). GetInt32 (3), SDR. GetString (4), SDR. GetString (5));
Cate. Articles.add (art);
}
Con. Close ();
return allcate;
}
Public Categoryoper ()
{
//
TODO: Add constructor logic here
//
}
}
/app_code/articleoper.cs
, 6
/default.aspx
Copy Code code as follows:
<%@ Page language= "C #" autoeventwireup= "true" codefile= "Default.aspx.cs" inherits= "_default"%>
<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<title> Untitled Page </title>
<body>
<form id= "Form1" runat= "Server" >
<div style= "Text-align:center" >
<asp:repeater id= "repcate" runat= "Server" >
<HeaderTemplate>
<table border= "1" >
<tr>
<td> Category Number </td>
<td> Category name </td>
<td> Classification Description </td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><% #Eval ("CategoryID")%></td>
<td><% #Eval ("CategoryName")%></td>
<td><% #Eval ("Categorydesc")%></td>
</tr>
<tr>
<td> This kind of news </td>
<TD colspan= "2" >
<asp:repeater id= "reparticle" runat= "server" Datasource= ' <% #Eval ("articles")%> ' >
<HeaderTemplate>
<table border= "1" style= "Background-color: #00FF00;" >
<tr>
<td> News Number </td>
<td> News title </td>
<td> News Author </td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><% #Eval ("id")%></td>
<td>
<asp:hyperlink id= "Hl1" runat= "text= ' <% #Eval (" title ")%> ' navigateurl= ' <% #string. Format ("showarticle.aspx?id={0}", Eval ("id"))%> ' ></asp:HyperLink>
</td>
<td><% #Eval ("author")%></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
</div>
</form>
</body>
/default.aspx.cs
Copy Code code as follows:
Using System;
public partial class _default:system.web.ui.page
{
private void Bindcategory ()
{
Repcate.datasource = Categoryoper.selectall ();
Repcate.databind ();
}
protected void Page_Load (object sender, EventArgs e)
{
if (! IsPostBack)
{
Bindcategory ();
}
}
}
/web.config
1.C, Resource download
