KeyValueConfigurationCollection Klasse

Definition

public ref class KeyValueConfigurationCollection : System::Configuration::ConfigurationElementCollection

[System.Configuration.ConfigurationCollection(typeof(System.Configuration.KeyValueConfigurationElement))]
public class KeyValueConfigurationCollection : System.Configuration.ConfigurationElementCollection

[<System.Configuration.ConfigurationCollection(typeof(System.Configuration.KeyValueConfigurationElement))>]
type KeyValueConfigurationCollection = class
    inherit ConfigurationElementCollection

Public Class KeyValueConfigurationCollection
Inherits ConfigurationElementCollection

Vererbung

Object

ConfigurationElement

ConfigurationElementCollection

KeyValueConfigurationCollection

Attribute

ConfigurationCollectionAttribute

Beispiele

Im folgenden Codebeispiel wird die Verwendung des Typs KeyValueConfigurationCollection veranschaulicht.

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

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

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

        // Get the section related object.
        AppSettingsSection configSection =
          (AppSettingsSection)config.GetSection
          ("appSettings");

        // 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.ToString());
        Console.WriteLine();

        // Create the KeyValueConfigurationElement.
        KeyValueConfigurationElement myAdminKeyVal = 
          new KeyValueConfigurationElement(
          "myAdminTool", "admin.aspx");

        // Determine if the configuration contains
        // any KeyValueConfigurationElements.
        KeyValueConfigurationCollection configSettings = 
          config.AppSettings.Settings;
        if (configSettings.AllKeys.Length == 0)
        {
          // Add KeyValueConfigurationElement to collection.
          config.AppSettings.Settings.Add(myAdminKeyVal);

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

        // Get the KeyValueConfigurationCollection 
        // from the configuration.
        KeyValueConfigurationCollection settings = 
          config.AppSettings.Settings;

        // Display each KeyValueConfigurationElement.
        foreach (KeyValueConfigurationElement keyValueElement in settings)
        {
          Console.WriteLine("Key: {0}", keyValueElement.Key);
          Console.WriteLine("Value: {0}", keyValueElement.Value);
          Console.WriteLine();
        }
      }
      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.Config
  Class KeyValueConfigCollection
    Public Shared Sub Main()
      Try
        ' Set the path of the config file.
        Dim configPath As String = "/aspnet"

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

        ' Get the section related object.
        Dim configSection As System.Configuration.AppSettingsSection = _
        CType(config.GetSection("appSettings"), System.Configuration.AppSettingsSection)

        '      Dim configSection As AppSettingsSection = _
        '       (AppSettingsSection)config.GetSection("appSettings")

        ' 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.ToString())
        Console.WriteLine()

        ' Create the KeyValueConfigurationElement.
        Dim myAdminKeyVal As KeyValueConfigurationElement = _
          New KeyValueConfigurationElement _
          ("myAdminTool", "admin.aspx")


        ' Determine if the configuration contains
        ' any KeyValueConfigurationElements.
        Dim configSettings As KeyValueConfigurationCollection = _
        config.AppSettings.Settings()

        If configSettings.AllKeys.Length = 0 Then
          ' Add KeyValueConfigurationElement to collection.
          config.AppSettings.Settings.Add(myAdminKeyVal)

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

        ' Get the KeyValueConfigurationCollection 
        ' from the configuration.
        Dim settings As KeyValueConfigurationCollection = _
        config.AppSettings.Settings()

        ' Display each KeyValueConfigurationElement.
        Dim keyValueElement As KeyValueConfigurationElement
        For Each keyValueElement In settings
          Console.WriteLine("Key: {0}", keyValueElement.Key)
          Console.WriteLine("Value: {0}", keyValueElement.Value)
          Console.WriteLine()
        Next

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

Hinweise

Diese Klasse stellt eine Auflistung von Paaren dar, wobei jedes Paar aus einer Zeichenfolge besteht, die als Auflistungsschlüssel und Zeichenfolgenwert dient. Da das erste Element ein Schlüssel ist, muss es für die Gesamteinlistung eindeutig sein.

Konstruktoren

Eigenschaften

Methoden

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