Encrypt Config : Encrypt « Configuration « ASP.NET Tutorial

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="EncryptConfig" %>

<!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>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    
    </div>
    </form>
</body>
</html>

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;
using System.Web.Configuration;

public partial class EncryptConfig : System.Web.UI.Page
{
  protected void Page_Load(object sender, EventArgs e)
  {
    Configuration config = WebConfigurationManager.OpenWebConfiguration(Request.ApplicationPath);
    ConfigurationSection appSettings = config.GetSection("appSettings");

    if (appSettings.SectionInformation.IsProtected)
    {
      appSettings.SectionInformation.UnprotectSection();
    }
    else
    {
      appSettings.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
    }
    config.Save();

  }
}

16.17.Encrypt
	16.17.1.	Encrypt Config
	16.17.2.	Encrypting Sections Programmatically
	16.17.3.	Encrypting Sections with the aspnet_regiis tool
	16.17.4.	decrypt a configuration section by using the -pdf option.
	16.17.5.	Decrypt a configuration section by specifying a virtual directory.
	16.17.6.	Encrypt connectionStrings section with the DataProtectionConfigurationProvider