NameValueConfigurationCollection Class
Definition
Important
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Contains a collection of NameValueConfigurationElement objects. This class cannot be inherited.
public ref class NameValueConfigurationCollection sealed : System::Configuration::ConfigurationElementCollection[System.Configuration.ConfigurationCollection(typeof(System.Configuration.NameValueConfigurationElement))]
public sealed class NameValueConfigurationCollection : System.Configuration.ConfigurationElementCollection[<System.Configuration.ConfigurationCollection(typeof(System.Configuration.NameValueConfigurationElement))>]
type NameValueConfigurationCollection = class
inherit ConfigurationElementCollectionPublic NotInheritable Class NameValueConfigurationCollection
Inherits ConfigurationElementCollection- Inheritance
- Attributes
Examples
The following code example demonstrates how to use the NameValueConfigurationCollection type.
#region Using directives
using System;
using System.Configuration;
using System.Web.Configuration;
using System.Collections;
using System.Text;
#endregion
namespace Samples.AspNet
{
class UsingNameValueConfigurationCollection
{
static void Main(string[] args)
{
try
{
// Set the path of the config file.
// Make sure that you have a Web site on the
// same server called TestConfig.
string configPath = "/TestConfig";
// Get the Web application configuration object.
Configuration config =
WebConfigurationManager.OpenWebConfiguration(configPath);
// Get the section related object.
AnonymousIdentificationSection configSection =
(AnonymousIdentificationSection)config.GetSection
("system.web/anonymousIdentification");
// Display title and info.
Console.WriteLine("Configuration Info");
Console.WriteLine();
// Display Config details.
Console.WriteLine("File Path: {0}",
config.FilePath);
Console.WriteLine("Section Path: {0}",
configSection.SectionInformation.Name);
Console.WriteLine();
// Create a NameValueConfigurationCollection object.
NameValueConfigurationCollection myNameValConfigCollection =
new NameValueConfigurationCollection();
foreach (PropertyInformation propertyItem in
configSection.ElementInformation.Properties)
{
// Assign domain name.
if (propertyItem.Name == "domain")
propertyItem.Value = "MyDomain";
if (propertyItem.Value != null)
{
// Enable SSL for cookie exchange.
if (propertyItem.Name == "cookieRequireSSL")
propertyItem.Value = true;
NameValueConfigurationElement nameValConfigElement =
new NameValueConfigurationElement
(propertyItem.Name.ToString(), propertyItem.Value.ToString());
// Add a NameValueConfigurationElement
// to the collection.
myNameValConfigCollection.Add(nameValConfigElement);
}
}
// Count property.
Console.WriteLine("Collection Count: {0}",
myNameValConfigCollection.Count);
// Item property.
Console.WriteLine("Value of property 'enabled': {0}",
myNameValConfigCollection["enabled"].Value);
// Display the contents of the collection.
foreach (NameValueConfigurationElement configItem
in myNameValConfigCollection)
{
Console.WriteLine();
Console.WriteLine("Configuration Details:");
Console.WriteLine("Name: {0}", configItem.Name);
Console.WriteLine("Value: {0}", configItem.Value);
}
// Assign the domain calue.
configSection.Domain = myNameValConfigCollection["domain"].Value;
// Assign the SSL required value.
if (myNameValConfigCollection["cookieRequireSSL"].Value == "true")
configSection.CookieRequireSSL = true;
// Remove domain from the collection.
NameValueConfigurationElement myConfigElement =
myNameValConfigCollection["domain"];
// Remove method.
myNameValConfigCollection.Remove(myConfigElement);
// Save changes to the configuration file.
// This modifies the Web.config of the TestConfig site.
config.Save(ConfigurationSaveMode.Minimal, true);
// Clear the collection.
myNameValConfigCollection.Clear();
}
catch (Exception e)
{
// Unknown error.
Console.WriteLine(e.ToString());
}
// Display and wait.
Console.ReadLine();
}
}
}
Imports System.Configuration
Imports System.Web
Imports System.Collections
Imports System.Text
Namespace Samples.AspNet
Class UsingNameValueConfigurationCollection
Public Shared Sub Main(ByVal args As String())
Try
' Set the path of the config file.
' Make sure that you have a Web site on the
' same server called TestConfig.
Dim configPath As String = "/TestConfig"
' Get the Web application configuration object.
Dim config As Configuration = _
System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(configPath)
' Get the section related object.
Dim configSection _
As System.Web.Configuration.AnonymousIdentificationSection = _
DirectCast(config.GetSection("system.web/anonymousIdentification"), _
System.Web.Configuration.AnonymousIdentificationSection)
' Display title and info.
Console.WriteLine("Configuration Info")
Console.WriteLine()
' Display Config details.
Console.WriteLine("File Path: {0}", config.FilePath)
Console.WriteLine("Section Path: {0}", configSection.SectionInformation.Name)
Console.WriteLine()
' Create a NameValueConfigurationCollection object.
Dim myNameValConfigCollection As New NameValueConfigurationCollection()
For Each propertyItem As PropertyInformation In configSection.ElementInformation.Properties
' Assign domain name.
If propertyItem.Name = "domain" Then
propertyItem.Value = "MyDomain"
End If
If propertyItem.Value <> Nothing Then
' Enable SSL for cookie exchange.
If propertyItem.Name = "cookieRequireSSL" Then
propertyItem.Value = True
End If
Dim nameValConfigElement As New NameValueConfigurationElement(propertyItem.Name.ToString(), propertyItem.Value.ToString())
' Add a NameValueConfigurationElement
' to the collection.
myNameValConfigCollection.Add(nameValConfigElement)
End If
Next
' Count property.
Console.WriteLine("Collection Count: {0}", myNameValConfigCollection.Count)
' Item property.
Console.WriteLine("Value of property 'enabled': {0}", myNameValConfigCollection("enabled").Value)
' Display the contents of the collection.
For Each configItem As NameValueConfigurationElement In myNameValConfigCollection
Console.WriteLine()
Console.WriteLine("Configuration Details:")
Console.WriteLine("Name: {0}", configItem.Name)
Console.WriteLine("Value: {0}", configItem.Value)
Next
' Assign the domain calue.
configSection.Domain = myNameValConfigCollection("domain").Value
' Assign the SSL required value.
If myNameValConfigCollection("cookieRequireSSL").Value = "true" Then
configSection.CookieRequireSSL = True
End If
' Remove domain from the collection.
Dim myConfigElement As NameValueConfigurationElement = myNameValConfigCollection("domain")
' Remove method.
myNameValConfigCollection.Remove(myConfigElement)
' Save changes to the configuration file.
' This modifies the Web.config of the TestConfig site.
config.Save(ConfigurationSaveMode.Minimal, True)
' Clear the collection.
myNameValConfigCollection.Clear()
Catch e As Exception
' Unknown error.
Console.WriteLine(e.ToString())
End Try
' Display and wait.
Console.ReadLine()
End Sub
End Class
End Namespace
Remarks
The NameValueConfigurationCollection class allows you to programmatically access a collection of NameValueConfigurationElement objects.
Constructors
| NameValueConfigurationCollection() |
Initializes a new instance of the NameValueConfigurationCollection class. |
Properties
| AddElementName |
Gets or sets the name of the ConfigurationElement to associate with the add operation in the ConfigurationElementCollection when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| AllKeys |
Gets the keys to all items contained in the NameValueConfigurationCollection. |
| ClearElementName |
Gets or sets the name for the ConfigurationElement to associate with the clear operation in the ConfigurationElementCollection when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| CollectionType |
Gets the type of the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| Count |
Gets the number of elements in the collection. (Inherited from ConfigurationElementCollection) |
| CurrentConfiguration |
Gets a reference to the top-level Configuration instance that represents the configuration hierarchy that the current ConfigurationElement instance belongs to. (Inherited from ConfigurationElement) |
| ElementInformation |
Gets an ElementInformation object that contains the non-customizable information and functionality of the ConfigurationElement object. (Inherited from ConfigurationElement) |
| ElementName |
Gets the name used to identify this collection of elements in the configuration file when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| ElementProperty |
Gets the ConfigurationElementProperty object that represents the ConfigurationElement object itself. (Inherited from ConfigurationElement) |
| EmitClear |
Gets or sets a value that specifies whether the collection has been cleared. (Inherited from ConfigurationElementCollection) |
| EvaluationContext |
Gets the ContextInformation object for the ConfigurationElement object. (Inherited from ConfigurationElement) |
| HasContext |
Gets a value that indicates whether the CurrentConfiguration property is |
| IsSynchronized |
Gets a value indicating whether access to the collection is synchronized. (Inherited from ConfigurationElementCollection) |
| Item[ConfigurationProperty] |
Gets or sets a property or attribute of this configuration element. (Inherited from ConfigurationElement) |
| Item[String] |
Gets or sets the NameValueConfigurationElement object based on the supplied parameter. |
| LockAllAttributesExcept |
Gets the collection of locked attributes. (Inherited from ConfigurationElement) |
| LockAllElementsExcept |
Gets the collection of locked elements. (Inherited from ConfigurationElement) |
| LockAttributes |
Gets the collection of locked attributes. (Inherited from ConfigurationElement) |
| LockElements |
Gets the collection of locked elements. (Inherited from ConfigurationElement) |
| LockItem |
Gets or sets a value indicating whether the element is locked. (Inherited from ConfigurationElement) |
| Properties |
Gets the collection of properties. (Inherited from ConfigurationElement) |
| RemoveElementName |
Gets or sets the name of the ConfigurationElement to associate with the remove operation in the ConfigurationElementCollection when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| SyncRoot |
Gets an object used to synchronize access to the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| ThrowOnDuplicate |
Gets a value indicating whether an attempt to add a duplicate ConfigurationElement to the ConfigurationElementCollection will cause an exception to be thrown. (Inherited from ConfigurationElementCollection) |
Methods
| Add(NameValueConfigurationElement) |
Adds a NameValueConfigurationElement object to the collection. |
| BaseAdd(ConfigurationElement) |
Adds a configuration element to the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| BaseAdd(ConfigurationElement, Boolean) |
Adds a configuration element to the configuration element collection. (Inherited from ConfigurationElementCollection) |
| BaseAdd(Int32, ConfigurationElement) |
Adds a configuration element to the configuration element collection. (Inherited from ConfigurationElementCollection) |
| BaseClear() |
Removes all configuration element objects from the collection. (Inherited from ConfigurationElementCollection) |
| BaseGet(Int32) |
Gets the configuration element at the specified index location. (Inherited from ConfigurationElementCollection) |
| BaseGet(Object) |
Returns the configuration element with the specified key. (Inherited from ConfigurationElementCollection) |
| BaseGetAllKeys() |
Returns an array of the keys for all of the configuration elements contained in the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| BaseGetKey(Int32) |
Gets the key for the ConfigurationElement at the specified index location. (Inherited from ConfigurationElementCollection) |
| BaseIndexOf(ConfigurationElement) |
Indicates the index of the specified ConfigurationElement. (Inherited from ConfigurationElementCollection) |
| BaseIsRemoved(Object) |
Indicates whether the ConfigurationElement with the specified key has been removed from the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| BaseRemove(Object) |
Removes a ConfigurationElement from the collection. (Inherited from ConfigurationElementCollection) |
| BaseRemoveAt(Int32) |
Removes the ConfigurationElement at the specified index location. (Inherited from ConfigurationElementCollection) |
| Clear() |
Clears the NameValueConfigurationCollection. |
| CopyTo(ConfigurationElement[], Int32) |
Copies the contents of the ConfigurationElementCollection to an array. (Inherited from ConfigurationElementCollection) |
| CreateNewElement() |
When overridden in a derived class, creates a new ConfigurationElement. (Inherited from ConfigurationElementCollection) |
| CreateNewElement(String) |
Creates a new ConfigurationElement when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| DeserializeElement(XmlReader, Boolean) |
Reads XML from the configuration file. (Inherited from ConfigurationElement) |
| Equals(Object) |
Compares the ConfigurationElementCollection to the specified object. (Inherited from ConfigurationElementCollection) |
| GetElementKey(ConfigurationElement) |
Gets the element key for a specified configuration element when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| GetEnumerator() |
Gets an IEnumerator which is used to iterate through the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| GetHashCode() |
Gets a unique value representing the ConfigurationElementCollection instance. (Inherited from ConfigurationElementCollection) |
| GetTransformedAssemblyString(String) |
Returns the transformed version of the specified assembly name. (Inherited from ConfigurationElement) |
| GetTransformedTypeString(String) |
Returns the transformed version of the specified type name. (Inherited from ConfigurationElement) |
| GetType() |
Gets the Type of the current instance. (Inherited from Object) |
| Init() |
Sets the ConfigurationElement object to its initial state. (Inherited from ConfigurationElement) |
| InitializeDefault() |
Used to initialize a default set of values for the ConfigurationElement object. (Inherited from ConfigurationElement) |
| IsElementName(String) |
Indicates whether the specified ConfigurationElement exists in the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| IsElementRemovable(ConfigurationElement) |
Indicates whether the specified ConfigurationElement can be removed from the ConfigurationElementCollection. (Inherited from ConfigurationElementCollection) |
| IsModified() |
Indicates whether this ConfigurationElementCollection has been modified since it was last saved or loaded when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| IsReadOnly() |
Indicates whether the ConfigurationElementCollection object is read only. (Inherited from ConfigurationElementCollection) |
| ListErrors(IList) |
Adds the invalid-property errors in this ConfigurationElement object, and in all subelements, to the passed list. (Inherited from ConfigurationElement) |
| MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
| OnDeserializeUnrecognizedAttribute(String, String) |
Gets a value indicating whether an unknown attribute is encountered during deserialization. (Inherited from ConfigurationElement) |
| OnDeserializeUnrecognizedElement(String, XmlReader) |
Causes the configuration system to throw an exception. (Inherited from ConfigurationElementCollection) |
| OnRequiredPropertyNotFound(String) |
Throws an exception when a required property is not found. (Inherited from ConfigurationElement) |
| PostDeserialize() |
Called after deserialization. (Inherited from ConfigurationElement) |
| PreSerialize(XmlWriter) |
Called before serialization. (Inherited from ConfigurationElement) |
| Remove(NameValueConfigurationElement) |
Removes a NameValueConfigurationElement object from the collection based on the provided parameter. |
| Remove(String) |
Removes a NameValueConfigurationElement object from the collection based on the provided parameter. |
| Reset(ConfigurationElement) |
Resets the ConfigurationElementCollection to its unmodified state when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| ResetModified() |
Resets the value of the IsModified() property to |
| SerializeElement(XmlWriter, Boolean) |
Writes the configuration data to an XML element in the configuration file when overridden in a derived class. (Inherited from ConfigurationElementCollection) |
| SerializeToXmlElement(XmlWriter, String) |
Writes the outer tags of this configuration element to the configuration file when implemented in a derived class. (Inherited from ConfigurationElement) |
| SetPropertyValue(ConfigurationProperty, Object, Boolean) |
Sets a property to the specified value. (Inherited from ConfigurationElement) |
| SetReadOnly() |
Sets the IsReadOnly() property for the ConfigurationElementCollection object and for all sub-elements. (Inherited from ConfigurationElementCollection) |
| ToString() |
Returns a string that represents the current object. (Inherited from Object) |
| Unmerge(ConfigurationElement, ConfigurationElement, ConfigurationSaveMode) |
Reverses the effect of merging configuration information from different levels of the configuration hierarchy. (Inherited from ConfigurationElementCollection) |
Explicit Interface Implementations
| ICollection.CopyTo(Array, Int32) |
Copies the ConfigurationElementCollection to an array. (Inherited from ConfigurationElementCollection) |
Extension Methods
| Cast<TResult>(IEnumerable) |
Casts the elements of an IEnumerable to the specified type. |
| OfType<TResult>(IEnumerable) |
Filters the elements of an IEnumerable based on a specified type. |
| AsParallel(IEnumerable) |
Enables parallelization of a query. |
| AsQueryable(IEnumerable) |
Converts an IEnumerable to an IQueryable. |
