ASP.NET中repeater嵌套实现代码(附源码)

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1.A,运行效果图

1.B,源代码(主要代码摘要)
/App_Code/DBConnection.cs
/App_Code/CategoryInfo.cs

 
using System.Collections.Generic; 
public class CategoryInfo 
{ 
int categoryid; 
string categoryname; 
string categorydesc; 
IList<ArticleInfo> articles; 
/// <summary> 
/// 1,子嵌套数据 
/// </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

复制代码代码如下:

 
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 category.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); 
//如果类别改变则创建一个新的 cate 对象 
if(categoryid!=tempcategoryid) 
{ 
cate = new CategoryInfo(sdr.GetInt32(0), sdr.GetString(1), sdr.GetString(2), new List<ArticleInfo>()); 
allcate.Add(cate); 
tempcategoryid = categoryid; //把新类别编号付给标识 
} 
ArticleInfo art = new ArticleInfo(sdr.GetInt32(3), sdr.GetString(4), sdr.GetString(5)); 
cate.Articles.Add(art); 
} 
con.Close(); 
return allcate; 
} 
public CategoryOper() 
{ 
// 
// TODO: 在此处添加构造函数逻辑 
// 
} 
} 

/App_Code/ArticleOper.cs
,6
/Default.aspx

复制代码代码如下:

 
<%@ 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"> 
<html xmlns="http://www.w3.org/1999/xhtml" > 
<head runat="server"> 
<title>无标题页</title> 
</head> 
<body> 
<form id="form1" runat="server"> 
<div style="text-align:center"> 
<asp:Repeater ID="RepCate" runat="server"> 
<HeaderTemplate> 
<table border="1"> 
<tr> 
<td>分类编号</td> 
<td>分类名称</td> 
<td>分类描述</td> 
</tr> 
</HeaderTemplate> 
<ItemTemplate> 
<tr> 
<td><%#Eval("categoryid") %></td> 
<td><%#Eval("categoryname") %></td> 
<td><%#Eval("categorydesc") %></td> 
</tr> 
<tr> 
<td>本类新闻</td> 
<td colspan="2"> 
<asp:Repeater ID="RepArticle" runat="server" DataSource='<%#Eval("articles") %>' > 
<HeaderTemplate> 
<table border="1" style="background-color:#00FF00;"> 
<tr> 
<td>新闻编号</td> 
<td>新闻标题</td> 
<td>新闻作者</td> 
</tr> 
</HeaderTemplate> 
<ItemTemplate> 
<tr> 
<td><%#Eval("id") %></td> 
<td> 
<asp:HyperLink ID="Hl1" runat="server" 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> 
</html> 

/Default.aspx.cs

复制代码代码如下:

 
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(); 
} 
} 
} 