NameValueConfigurationCollection Class
Contains a collection of NameValueConfigurationElement objects. This class cannot be inherited.
Assembly: System.Configuration (in System.Configuration.dll)
The NameValueConfigurationCollection class allows you to programmatically access a collection of NameValueConfigurationElement objects.
The following code example demonstrates how to use the NameValueConfigurationCollection type.
Imports System 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
System.Configuration.ConfigurationElement
System.Configuration.ConfigurationElementCollection
System.Configuration.NameValueConfigurationCollection
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.