net 2.0中的Repeater嵌套 的两种方法

前台页面部分：




<asp:Repeater id="rptCategories" runat="server">


<HeaderTemplate>


<table width="100%" border="0" cellspacing="0" cellpadding="0">


</HeaderTemplate>


<ItemTemplate>


<!--分类名称-->




<tr><th><%

# DataBinder.Eval(Container.DataItem, "TypeName") %></th></tr>


<!--分类下的产品-->


<asp:Repeater id="rptProduct" runat="server">


<ItemTemplate>




<tr><td><a href='ProductInfo.aspx?Id=<%# DataBinder.Eval(Container.DataItem, "ID") %>'><%

# DataBinder.Eval(Container.DataItem, "ProductName") %></a></td></tr>


</ItemTemplate>


</asp:Repeater>


</ItemTemplate>


<FooterTemplate>


</table>


</FooterTemplate>


</asp:Repeater>



后台代码部分（部分代码）：



//在绑定分类品名时,绑定分类下的产品


private void rptCategories_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)






{


BLL.Products products =new BLL.Products();


if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)






{


Repeater rptProduct = (Repeater) e.Item.FindControl("rptProduct");


//找到分类Repeater关联的数据项


DataRowView rowv = (DataRowView)e.Item.DataItem;


//提取分类ID


int CategorieId = Convert.ToInt32(rowv["ID"]);


//根据分类ID查询该分类下的产品，并绑定产品Repeater


rptProduct.DataSource = products.GetProductsByCategorieId(CategorieId);


rptProduct.DataBind();


}


}



另一种方法：

前台：

<!-- start parent repeater -->
<asp:repeater id="parentRepeater" runat="server">
<itemtemplate>
<b><%# DataBinder.Eval(Container.DataItem,"au_id") %></b><br>

<!-- start child repeater -->
<asp:repeater id="childRepeater" datasource='<%# ((DataRowView)Container.DataItem)
.Row.GetChildRows("myrelation") %>' runat="server">

<itemtemplate>
<%# DataBinder.Eval(Container.DataItem, "[/"title_id/"]")%><br>
</itemtemplate>
</asp:repeater>
<!-- end child repeater -->

</itemtemplate>
</asp:repeater>
<!-- end parent repeater -->

后台：public partial class NestedRepeater : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Repeater childRepeater;//parentRepeater;
public NestedRepeater()
{
Page.Init += new System.EventHandler(Page_Init);
}
public void Page_Load(object sender, EventArgs e)
{
//Create the connection and DataAdapter for the Authors table.
SqlConnection cnn = new SqlConnection("server=.;database=pubs; user id=sa;pwd=;");
SqlDataAdapter cmd1 = new SqlDataAdapter("select * from authors", cnn);

//Create and fill the DataSet.
DataSet ds = new DataSet();
cmd1.Fill(ds, "authors");

//Create a second DataAdapter for the Titles table.
SqlDataAdapter cmd2 = new SqlDataAdapter("select * from titleauthor", cnn);
cmd2.Fill(ds, "titles");

//Create the relation bewtween the Authors and Titles tables.
ds.Relations.Add("myrelation",
ds.Tables["authors"].Columns["au_id"],
ds.Tables["titles"].Columns["au_id"]);

//Bind the Authors table to the parent Repeater control, and call DataBind.
parentRepeater.DataSource = ds.Tables["authors"];
Page.DataBind();

//Close the connection.
cnn.Close();
}
private void Page_Init(object sender, EventArgs e)
{
InitializeComponent();
}
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
}