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File: Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="HtmlEncodeTest" %>
 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">


    Untitled Page


    
    

        

Properly encoded:

 
        
        
        

Incorrectly encoded:

 
        
    

    


File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class HtmlEncodeTest : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
    ctrl1.InnerHtml = "To bold text use the  tag.";
    ctrl2.InnerHtml = "To bold text use the " + Server.HtmlEncode("") + " tag.";
    }
}