More on Dynamically Loading ListView Templates
I got quite a few comments on my post on Dynamically Loading ListView Templates so rather than trying to paste code into a comment in reply, I thought I'd paste an update here. Specific issues raised were problems when databinding without a DataSource control and problems on postback. Here's a new version that addresses both those issues:
<%@ Page Language="C#" 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 id="Head1" runat="server"></head>
<body>
<form id="form1" runat="server">
<asp:ListView ID="ListView1"
runat="server"
ItemPlaceholderID="MyLayout$itemPlaceholder"
OnLayoutCreated="ListView1_LayoutCreated">
</asp:ListView>
<asp:Button ID="Button1" runat="server" Text="I Do Postbacks" />
</form>
</body>
</html>
using System;
using System.Linq;
using System.Web.UI;
using System.Xml.Linq;
public partial class Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
XDocument xdoc = XDocument.Load(Server.MapPath("~/XmlFile.xml"));
var query = from x in xdoc.Descendants("book")
select new { id = (string)x.Attribute("id") };
ListView1.DataSource = query;
ListView1.DataBind();
}
protected void ListView1_LayoutCreated(object sender, EventArgs e)
{
ListView1.LayoutTemplate = LoadTemplate("WebUserControl.ascx");
ListView1.ItemTemplate = LoadTemplate("WebUserControl2.ascx");
Control newLayoutContainer = new Control();
ListView1.LayoutTemplate.InstantiateIn(newLayoutContainer);
var userControl = newLayoutContainer.Controls[0];
userControl.ID = "MyLayout";
ListView1.Controls.Add(newLayoutContainer);
}
}
Hope that's useful.
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