MachineKeySection 類別

定義

public ref class MachineKeySection sealed : System::Configuration::ConfigurationSection

public sealed class MachineKeySection : System.Configuration.ConfigurationSection

type MachineKeySection = class
    inherit ConfigurationSection

Public NotInheritable Class MachineKeySection
Inherits ConfigurationSection

繼承

Object

ConfigurationElement

ConfigurationSection

MachineKeySection

範例

本節中的範例示範如何針對 machineKey 區段的數個屬性，以宣告方式指定值，也可以做為 類別的成員 MachineKeySection 來存取。

下列組態檔中的範例示範如何以宣告方式指定 machineKey 區段的值。

<system.web>  
  <machineKey validationKey="AutoGenerate,IsolateApps"   
    decryptionKey="AutoGenerate,IsolateApps"   
    validation="SHA1"/>  
</system.web>  

此範例使用 SHA1。 由於 SHA1 的衝突問題，Microsoft 建議使用 SHA256。

下列範例示範如何在程式碼中使用 MachineKeySection 類別。

#region Using directives

using System;
using System.Collections.Generic;
using System.Text;
using System.Configuration;
using System.Web;
using System.Web.Configuration;

#endregion

namespace Samples.Aspnet.SystemWebConfiguration
{
  class UsingMachineKeySection
  {
    static void Main(string[] args)
    {
      try
      {
        // Set the path of the config file.
        string configPath = "";

        // Get the Web application configuration object.
        Configuration config = WebConfigurationManager.OpenWebConfiguration(configPath);

        // Get the section related object.
        MachineKeySection configSection = 
          (MachineKeySection)config.GetSection("system.web/machineKey");

        // Display title and info.
        Console.WriteLine("ASP.NET Configuration Info");
        Console.WriteLine();

        // Display Config details.
        Console.WriteLine("File Path: {0}",
          config.FilePath);
        Console.WriteLine("Section Path: {0}",
          configSection.SectionInformation.Name);

        // Display ValidationKey property.
        Console.WriteLine("ValidationKey: {0}",
          configSection.ValidationKey);

        // Set ValidationKey property.
        configSection.ValidationKey = "AutoGenerate,IsolateApps";

        // Display DecryptionKey property.
        Console.WriteLine("DecryptionKey: {0}",
          configSection.DecryptionKey);

        // Set DecryptionKey property.
        configSection.DecryptionKey = "AutoGenerate,IsolateApps";

        // Display Validation property.
        Console.WriteLine("Validation: {0}",
          configSection.Validation);

        // Set Validation property.
        configSection.Validation = MachineKeyValidation.HMACSHA256;

        // Update if not locked.
        if (!configSection.SectionInformation.IsLocked)
        {
          config.Save();
          Console.WriteLine("** Configuration updated.");
        }
        else
        {
          Console.WriteLine("** Could not update, section is locked.");
        }
      }

      catch (Exception e)
      {
        // Unknown error.
        Console.WriteLine(e.ToString());
      }

      // Display and wait
      Console.ReadLine();
    }
  }
}

Imports System.Collections.Generic
Imports System.Text
Imports System.Configuration
Imports System.Web
Imports System.Web.Configuration

Namespace Samples.Aspnet.SystemWebConfiguration
  Class UsingMachineKeySection
    Public Shared Sub Main()
      Try
        ' Set the path of the config file.
        Dim configPath As String = ""

        ' Get the Web application configuration object.
        Dim config As System.Configuration.Configuration = _
         System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(configPath)

        ' Get the section related object.
        Dim configSection As System.Web.Configuration.MachineKeySection = _
         CType(config.GetSection("system.web/machineKey"), _
         System.Web.Configuration.MachineKeySection)

        ' Display title and info.
        Console.WriteLine("ASP.NET Configuration Info")
        Console.WriteLine()

        ' Display Config details.
        Console.WriteLine("File Path: {0}", config.FilePath)
        Console.WriteLine("Section Path: {0}", configSection.SectionInformation.Name)

        ' Display ValidationKey property.
        Console.WriteLine("ValidationKey: {0}", _
         configSection.ValidationKey)

        ' Set ValidationKey property.
        configSection.ValidationKey = "AutoGenerate,IsolateApps"

        ' Display DecryptionKey property.
        Console.WriteLine("DecryptionKey: {0}", configSection.DecryptionKey)

        ' Set DecryptionKey property.
        configSection.DecryptionKey = "AutoGenerate,IsolateApps"

        ' Display Validation value.
        Console.WriteLine("Validation: {0}", configSection.Validation)

        ' Set Validation value.
        configSection.Validation = MachineKeyValidation.HMACSHA256

        ' Update if not locked.
        If Not configSection.SectionInformation.IsLocked Then
          config.Save()
          Console.WriteLine("** Configuration updated.")
        Else
          Console.WriteLine("** Could not update, section is locked.")
        End If

      Catch e As Exception
        ' Unknown error.
        Console.WriteLine(e.ToString())
      End Try

      ' Display and wait
      Console.ReadLine()
    End Sub
  End Class
End Namespace

備註

類別 MachineKeySection 可讓您以程式設計方式存取和修改組態檔中 區段的內容 MachineKey 。 區 MachineKey 段可以在電腦 (Machine.config) 或應用程式 (Web.config) 層級設定，並控制用於Windows Forms驗證、檢視狀態驗證和會話狀態應用程式隔離的金鑰和演算法。 若要讓上述任何功能在 Web 服務器 (網路) DecryptionKey ，區段的 MachineKey 和 ValidationKey 屬性必須明確且與有效的索引鍵值相同。 值 AutoGenerate 不適用於 Web 服務器陣列，因為它依賴密碼編譯隨機密碼，它會使用電腦本機保護來保存，而且不會在多部電腦上相同。

給繼承者的注意事項

如果您要指定此組態區段中的金鑰，如同 Web 服務器陣列案例中的必要專案，建議您使用受保護的組態來加密此區段。

建構函式

屬性

方法

適用於

另請參閱

• ConfigurationSection
• 表單驗證認證