KeyValueConfigurationElement Class
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KeyValueConfigurationElement Class

 

Represents a configuration element that contains a key/value pair.

Namespace:   System.Configuration
Assembly:  System.Configuration (in System.Configuration.dll)

System.Object
  System.Configuration.ConfigurationElement
    System.Configuration.KeyValueConfigurationElement

public class KeyValueConfigurationElement : ConfigurationElement

NameDescription
System_CAPS_pubmethodKeyValueConfigurationElement(String, String)

Initializes a new instance of the KeyValueConfigurationElement class based on the supplied parameters.

NameDescription
System_CAPS_pubpropertyCurrentConfiguration

Gets a reference to the top-level Configuration instance that represents the configuration hierarchy that the current ConfigurationElement instance belongs to.(Inherited from ConfigurationElement.)

System_CAPS_pubpropertyElementInformation

Gets an ElementInformation object that contains the non-customizable information and functionality of the ConfigurationElement object. (Inherited from ConfigurationElement.)

System_CAPS_protpropertyElementProperty

Gets the ConfigurationElementProperty object that represents the ConfigurationElement object itself.(Inherited from ConfigurationElement.)

System_CAPS_protpropertyEvaluationContext

Gets the ContextInformation object for the ConfigurationElement object.(Inherited from ConfigurationElement.)

System_CAPS_protpropertyHasContext

(Inherited from ConfigurationElement.)

System_CAPS_protpropertyItem[ConfigurationProperty]

Gets or sets a property or attribute of this configuration element.(Inherited from ConfigurationElement.)

System_CAPS_protpropertyItem[String]

Gets or sets a property, attribute, or child element of this configuration element.(Inherited from ConfigurationElement.)

System_CAPS_pubpropertyKey

Gets the key of the KeyValueConfigurationElement object.

System_CAPS_pubpropertyLockAllAttributesExcept

Gets the collection of locked attributes.(Inherited from ConfigurationElement.)

System_CAPS_pubpropertyLockAllElementsExcept

Gets the collection of locked elements.(Inherited from ConfigurationElement.)

System_CAPS_pubpropertyLockAttributes

Gets the collection of locked attributes (Inherited from ConfigurationElement.)

System_CAPS_pubpropertyLockElements

Gets the collection of locked elements.(Inherited from ConfigurationElement.)

System_CAPS_pubpropertyLockItem

Gets or sets a value indicating whether the element is locked.(Inherited from ConfigurationElement.)

System_CAPS_protpropertyProperties

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the collection of properties. (Overrides ConfigurationElement.Properties.)

System_CAPS_pubpropertyValue

Gets or sets the value of the KeyValueConfigurationElement object.

NameDescription
System_CAPS_protmethodDeserializeElement(XmlReader, Boolean)

Reads XML from the configuration file.(Inherited from ConfigurationElement.)

System_CAPS_pubmethodEquals(Object)

Compares the current ConfigurationElement instance to the specified object.(Inherited from ConfigurationElement.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetHashCode()

Gets a unique value representing the current ConfigurationElement instance.(Inherited from ConfigurationElement.)

System_CAPS_protmethodGetTransformedAssemblyString(String)

Returns the transformed version of the specified assembly name. (Inherited from ConfigurationElement.)

System_CAPS_protmethodGetTransformedTypeString(String)

Returns the transformed version of the specified type name.(Inherited from ConfigurationElement.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethodInit()

This API supports the product infrastructure and is not intended to be used directly from your code. Sets the KeyValueConfigurationElement object to its initial state.(Overrides ConfigurationElement.Init().)

System_CAPS_protmethodInitializeDefault()

Used to initialize a default set of values for the ConfigurationElement object.(Inherited from ConfigurationElement.)

System_CAPS_protmethodIsModified()

Indicates whether this configuration element has been modified since it was last saved or loaded, when implemented in a derived class.(Inherited from ConfigurationElement.)

System_CAPS_pubmethodIsReadOnly()

Gets a value indicating whether the ConfigurationElement object is read-only.(Inherited from ConfigurationElement.)

System_CAPS_protmethodListErrors(IList)

Adds the invalid-property errors in this ConfigurationElement object, and in all subelements, to the passed list.(Inherited from ConfigurationElement.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_protmethodOnDeserializeUnrecognizedAttribute(String, String)

Gets a value indicating whether an unknown attribute is encountered during deserialization.(Inherited from ConfigurationElement.)

System_CAPS_protmethodOnDeserializeUnrecognizedElement(String, XmlReader)

Gets a value indicating whether an unknown element is encountered during deserialization.(Inherited from ConfigurationElement.)

System_CAPS_protmethodOnRequiredPropertyNotFound(String)

Throws an exception when a required property is not found.(Inherited from ConfigurationElement.)

System_CAPS_protmethodPostDeserialize()

Called after deserialization.(Inherited from ConfigurationElement.)

System_CAPS_protmethodPreSerialize(XmlWriter)

Called before serialization.(Inherited from ConfigurationElement.)

System_CAPS_protmethodReset(ConfigurationElement)

Resets the internal state of the ConfigurationElement object, including the locks and the properties collections.(Inherited from ConfigurationElement.)

System_CAPS_protmethodResetModified()

Resets the value of the IsModified method to false when implemented in a derived class.(Inherited from ConfigurationElement.)

System_CAPS_protmethodSerializeElement(XmlWriter, Boolean)

Writes the contents of this configuration element to the configuration file when implemented in a derived class.(Inherited from ConfigurationElement.)

System_CAPS_protmethodSerializeToXmlElement(XmlWriter, String)

Writes the outer tags of this configuration element to the configuration file when implemented in a derived class.(Inherited from ConfigurationElement.)

System_CAPS_protmethodSetPropertyValue(ConfigurationProperty, Object, Boolean)

Sets a property to the specified value.(Inherited from ConfigurationElement.)

System_CAPS_protmethodSetReadOnly()

Sets the IsReadOnly property for the ConfigurationElement object and all subelements.(Inherited from ConfigurationElement.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_protmethodUnmerge(ConfigurationElement, ConfigurationElement, ConfigurationSaveMode)

Modifies the ConfigurationElement object to remove all values that should not be saved. (Inherited from ConfigurationElement.)

The KeyValueConfigurationElement object inherits from the ConfigurationElement base class. The ConfigurationElement object represents an element within a configuration file. The KeyValueConfigurationElement object can belong in a KeyValueConfigurationCollection collection.

The following code example demonstrates how to use members of the KeyValueConfigurationElement class.

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();
    }
  }
}

.NET Framework
Available since 2.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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