Mega Code Archive
Creating Templated Databound Controls
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File: DivView.cs
using System;
using System.Collections;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace MyNamespace
{
public class DivView : CompositeDataBoundControl
{
private ITemplate _itemTemplate;
[TemplateContainer(typeof(DivViewItem))]
[PersistenceMode(PersistenceMode.InnerProperty)]
public ITemplate ItemTemplate
{
get { return _itemTemplate; }
set { _itemTemplate = value; }
}
protected override int CreateChildControls(IEnumerable dataSource, bool dataBinding)
{
int counter = 0;
foreach (object dataItem in dataSource)
{
DivViewItem contentItem = new DivViewItem(dataItem, counter);
_itemTemplate.InstantiateIn(contentItem);
Controls.Add(contentItem);
counter++;
}
DataBind(false);
return counter;
}
protected override HtmlTextWriterTag TagKey
{
get
{
return HtmlTextWriterTag.Div;
}
}
}
public class DivViewItem : WebControl, IDataItemContainer
{
private object _dataItem;
private int _index;
public object DataItem
{
get { return _dataItem; }
}
public int DataItemIndex
{
get { return _index; }
}
public int DisplayIndex
{
get { return _index; }
}
protected override HtmlTextWriterTag TagKey
{
get
{
return HtmlTextWriterTag.Div;
}
}
public DivViewItem(object dataItem, int index)
{
_dataItem = dataItem;
_index = index;
}
}
}
File: Default.aspx
<%@ Page Language="C#" %>
<%@ Register TagPrefix="custom" Namespace="MyNamespace" %>
<!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 id="Head1" runat="server">
<style type="text/css">
.products
{
width:500px;
}
.products div
{
border:solid 1px black;
padding:10px;
margin:10px;
}
</style>
<title>Show DivView</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<custom:DivView
id="lstProducts"
DataSourceID="srcProducts"
CssClass="products"
Runat="Server">
<ItemTemplate>
<h1><%# Eval("Title") %></h1>
Director: <%# Eval("Director") %>
</ItemTemplate>
</custom:DivView>
<asp:SqlDataSource
id="srcProducts"
ConnectionString="<%$ ConnectionStrings:Products %>"
SelectCommand="SELECT Title, Director FROM Products"
Runat="server" />
<br />
<asp:LinkButton
id="lnkReload"
Text="Reload"
Runat="server" />
</div>
</form>
</body>
</html>
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