ContextInformation Třída

Definice

public ref class ContextInformation sealed

public sealed class ContextInformation

type ContextInformation = class

Public NotInheritable Class ContextInformation

Dědičnost

Object

ContextInformation

Příklady

Následující příklad kódu ukazuje, jak použít ContextInformation typ.

#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.ConfigurationSample
{
  class UsingContextInformation
  {
    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.
        HealthMonitoringSection configSection =
          (HealthMonitoringSection)config.GetSection("system.web/healthMonitoring");

        // 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);

          // IsMachineLevel property.
          Console.WriteLine("IsMachineLevel: {0}",
            config.EvaluationContext.IsMachineLevel);

          // Create an object based on HostingContext.
          WebContext myWC =
            (WebContext)config.EvaluationContext.HostingContext;
          // Use the WebContext object to determine
          // the ApplicationLevel.
          Console.WriteLine("ApplicationLevel: {0}",
            myWC.ApplicationLevel);
        }

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

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

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

Namespace Samples.Aspnet.ConfigurationSample
  Class UsingContextInformation
    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 Configuration = _
            WebConfigurationManager.OpenWebConfiguration(configPath)

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

        ' 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)

        ' IsMachineLevel property.
        Console.WriteLine("IsMachineLevel: {0}", _
          config.EvaluationContext.IsMachineLevel)

        ' Create an object based on HostingContext.
        Dim myWC As WebContext = _
          config.EvaluationContext.HostingContext
        ' Use the WebContext object to determine
        ' the ApplicationLevel.
        Console.WriteLine("ApplicationLevel: {0}", _
          myWC.ApplicationLevel)

      Catch e As System.Exception
        ' Error.
        Console.WriteLine(e.ToString())
      End Try
      ' Display and wait.
      Console.ReadLine()
    End Sub
  End Class
End Namespace

Poznámky

Objekt ContextInformation poskytuje podrobnosti o prostředí související s prvkem konfigurace. Vlastnost můžete například použít IsMachineLevel k určení, zda ConfigurationElement byla nastavena v Machine.config, nebo můžete pomocí HostingContext vlastnosti určit, do které hierarchie ConfigurationElement patří.

Vlastnosti

Metody

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