| DataList嵌套DataList |
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1.html代码
 <HTML>
<HEAD>
<title>NestedDataListstitle>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://singlepine.cnblogs.com/">
HEAD>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:DataList runat="server" Id="dlCategories" GridLines="Both" Bordercolor="black" cellpadding="3"
cellspacing="0" Headerstyle-BackColor="#DDDDDD" Headerstyle-Forecolor="#777777" Headerstyle-Font-Name="Arial"
Headerstyle-Font-Size="14" Headerstyle-Font-Bold="true" Font-Name="Arial" Font-Bold="true"
Font-Italic="true" Font-Size="11" ForeColor="Red" RepeatColumns="1">
<HeaderTemplate>
省市 & 市区
HeaderTemplate>
<ItemTemplate>
  <% # DataBinder.Eval(Container, "DataItem.province") %>
<br>
<asp:DataList runat="server" Id="ChildDataList" GridLines="None" Bordercolor="black" cellpadding="3" cellspacing="0" Headerstyle-BackColor="#8080C0" Headerstyle-Font-Name="Arial" Headerstyle-Font-Size="8" Font-Name="Arial" Font-Size="8" datasource='<%# DataBinder.Eval(Container, "DataItem.myrelation") %>' RepeatColumns="5">
<ItemTemplate>
<%# DataBinder.Eval(Container, "DataItem.city") %>
ItemTemplate>
asp:DataList>
ItemTemplate>
asp:DataList>
form>
body>
HTML>2.cs代码
public class NestedDataLists : System.Web.UI.Page
{
 protected System.Web.UI.WebControls.DataList dlCategories;
private void Page_Load(object sender, System.EventArgs e)
  {
string constring=System.Configuration.ConfigurationSettings.AppSettings["ConnectionString"];
DataSet ds=new DataSet();
string sql1="select * from province";
SqlDataAdapter sda1 =new SqlDataAdapter(sql1,constring);
sda1.Fill(ds,"province");
string sql2="select * from city";
SqlDataAdapter sda2 =new SqlDataAdapter(sql2,constring);
sda2.Fill(ds,"city");
ds.Relations.Add("myrelation", ds.Tables["province"].Columns["provinceID"], ds.Tables["city"].Columns["father"]);
dlCategories.DataSource=ds.Tables["province"].DefaultView;
dlCategories.DataBind();
 }
Web Form Designer generated code#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/**////
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
 }
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