Slide 13.1: Data binding syntax: <%# %>

Data Binding Syntax: <%# %>

With ASP.NET data binding, you can bind any server control to simple properties, collections, expressions and/or methods. The data binding enables page developers to hierarchically bind control properties to data container values. Code located within a <%# %> code block is only executed when the DataBind method of its parent control container is invoked. The following example demonstrates how to use the data binding syntax within an <asp:datalist runat="server"> control:

DataList

DataList

The property ItemTemplate gets or sets the template for the items in the DataList control.

The property HeaderTemplate gets or sets the template for the heading section of the DataList control.

reference5_cs.aspx

Web

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Collections" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script language="C#" runat="server">
 protected void Page_Load( object sender, EventArgs e ) {
  ArrayList Items = new ArrayList( );
  Items.Add( "One" );
  Items.Add( "Two" );
  Items.Add( "Three" );
  MyList.DataSource = Items;
  MyList.DataBind( );
 }
</script>

<html xmlns="http://www.w3.org/1999/xhtml"> 
 <body> 
  <asp:datalist id="MyList" runat="server">
   <ItemTemplate>
    Here is a value: <%# Container.DataItem %>
   </ItemTemplate>
  </asp:datalist>
 </body>
</html>