Put simple data binding expressions : Expressions « Data Binding « ASP.NET Tutorial
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"
Inherits="Default"%>
<%@ Import Namespace="System.Drawing" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Simple Data Binding</title>
</head>
<body>
<div id="pageContent">
<form id="form1" runat="server">
<asp:DropDownList ID="SelColors" runat="server" AutoPostBack="True">
<asp:ListItem>Orange</asp:ListItem>
<asp:ListItem>Green</asp:ListItem>
<asp:ListItem>Cyan</asp:ListItem>
<asp:ListItem>Red</asp:ListItem>
<asp:ListItem>Blue</asp:ListItem>
</asp:DropDownList>
<asp:Label runat="server" ID="lblColor" EnableTheming="false"
ForeColor='<%# Color.FromName(SelColors.SelectedValue) %>'
Text='<%# "<b>You selected: </b>" + SelColors.SelectedValue %>' />
<asp:Label runat="server" ID="Label4" Text='<%# "on " + DateTime.Now %>' />
<hr />
</form>
</div>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Data.SqlClient;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
public partial class Default : System.Web.UI.Page
{
void Page_Load(object sender, EventArgs e)
{
DataBind();
}
}