＜%@ Import Namespace="System.Configuration" %＞ 

＜%@ Import Namespace="System.Web.Configuration" %＞ 

＜%@ Import Namespace="System.Xml" %＞ 
＜script runat="server" language="C#"＞ 
public void Page_Load(object source, EventArgs e) 

...{ 

if (!IsPostBack) ...{ 

UpdateUI(); 

} 

} 
void ProtectButton_OnClick(Object source, EventArgs e) 

...{ 

String path = Request.CurrentExecutionFilePath; 

path = path.Substring(0, path.LastIndexOf('/')); 
// Get configuration. 

Configuration config = WebConfigurationManager.OpenWebConfiguration(path); 

ConfigurationSection appSettings = config.GetSection("appSettings"); 

if (appSettings.SectionInformation.IsProtected) 

...{ 

appSettings.SectionInformation.UnprotectSection(); 

} 

else 

...{ 

appSettings.SectionInformation.ProtectSection("DataProtectionConfigurationProvider"); 

} 

try 

...{ 

config.Save(); 

UpdateUI(); 

} 

catch (Exception ex) 

...{ 

Response.Write("In order to modify configuration settings, the ASP.NET process account
(either the local ASPNET or Network Service account, by default) "); 

Response.Write("must have write permission granted for the Web.config file 
in the sample directory"); 

} 

} 
void UpdateUI() 

...{ 

String path = Request.CurrentExecutionFilePath; 

path = path.Substring(0, path.LastIndexOf('/')); 
// Get configuration. 

Configuration config = WebConfigurationManager.OpenWebConfiguration(path); 
// Show XML for app settings. 

ConfigurationSection appSettings = config.GetSection("appSettings"); 
// Set protect button appropriately. 

if (appSettings.SectionInformation.IsProtected) 

...{ 

Encrypted.Text = "Yes"; 

ProtectButton.Text = "Unprotect"; 

} 

else 

...{ 

Encrypted.Text = "No"; 

ProtectButton.Text = "Protect"; 

} 
// Show XML for app settings. 

AppSettingsXml.Text = " " + Server.HtmlEncode(appSettings.SectionInformation.GetRawXml()); 
// Load XML directly from config file, to show encrypted XML. 
String configPath = Server.MapPath("web.config"); 

XmlDocument doc = new XmlDocument(); 

doc.PreserveWhitespace = true; 

doc.Load(configPath); 

XmlNode appSettingsXml = doc.SelectSingleNode("configuration/appSettings"); 

AppSettingsEncrypted.Text = " " + Server.HtmlEncode(appSettingsXml.OuterXml); 

} 
＜/script＞ 
＜html＞ 

＜head＞ 

＜title＞Encrypted Configuration Sections＜/title＞ 

＜/head＞ 

＜body＞ 

＜form id="form1" runat="server"＞ 

＜div＞ 

＜h2＞Encrypted:＜asp:Label runat="server" id="Encrypted" /＞＜/h2＞
＜asp:Button runat="server" id="ProtectButton" OnClick="ProtectButton_OnClick" /＞ 

＜h2＞Current XML (decrypted):＜/h2＞ 

＜pre＞ 

＜asp:Label runat="server" ID="AppSettingsXml" /＞ 

＜/pre＞ 

＜h2＞Encrypted contents:＜/h2＞ 

＜pre＞ 

＜asp:Label runat="server" ID="AppSettingsEncrypted" /＞ 

＜/pre＞ 

＜/div＞ 

＜/form＞ 

＜/body＞ 

＜/html＞ 

＜?xml version="1.0" encoding="utf-8"?＞ 

＜configuration＞ 

＜configProtectedData /＞ 

＜appSettings＞ 

＜add key="currencyService" value="http://www.microsoft.com/services/currencyService.asmx" /＞ 

＜add key="creditCardValidationService" value="http://www.microsoft.com/services/cc.asmx" /＞ 

＜/appSettings＞ 
＜/configuration＞