PropertyInformation クラス
アセンブリ: System.Configuration (system.configuration.dll 内)


PropertyInformation オブジェクトには、構成内の個々のプロパティのメタ情報が含まれています。このオブジェクトは、個々の属性のプロパティの検証や変更を行う場合に使用できます。
PropertyInformation オブジェクトは、関連付けられている PropertyInformationCollection オブジェクトから派生します。PropertyInformationCollection オブジェクトは、関連付けられている ElementInformation オブジェクトから派生します。

PropertyInformation 型を使用する方法を次のコード例に示します。
Imports System Imports System.Collections.Generic Imports System.Text Imports System.Configuration Imports System.Web Imports System.Web.Configuration Namespace Samples.ConfigurationExamples Class UsingPropertyInformation 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 AnonymousIdentificationSection = _ CType(config.GetSection("system.web/anonymousIdentification"), _ AnonymousIdentificationSection) ' Display title. Console.WriteLine("Configuration PropertyInformation") Console.WriteLine("Section: anonymousIdentification") ' Instantiate a new PropertyInformationCollection object. Dim propCollection As PropertyInformationCollection = _ configSection.ElementInformation.Properties() ' Display Collection Count. Console.WriteLine("Collection Count: {0}", _ propCollection.Count) ' Display properties of elements ' of the PropertyInformationCollection. For Each propertyItem As PropertyInformation In propCollection Console.WriteLine() Console.WriteLine("Property Details:") ' Display the Name property. Console.WriteLine("Name: {0}", propertyItem.Name) ' Display the Value property. Console.WriteLine("Value: {0}", propertyItem.Value) ' Display the DefaultValue property. Console.WriteLine("DefaultValue: {0}", _ propertyItem.DefaultValue) _ ' Display the Type property. Console.WriteLine("Type: {0}", propertyItem.Type) ' Display the IsKey property. Console.WriteLine("IsKey: {0}", propertyItem.IsKey) ' Display the IsLocked property. Console.WriteLine("IsLocked: {0}", propertyItem.IsLocked) ' Display the IsModified property. Console.WriteLine("IsModified: {0}", propertyItem.IsModified) ' Display the IsRequired property. Console.WriteLine("IsRequired: {0}", propertyItem.IsRequired) ' Display the LineNumber property. Console.WriteLine("LineNumber: {0}", propertyItem.LineNumber) ' Display the Source property. Console.WriteLine("Source: {0}", propertyItem.Source) ' Display the Validator property. Console.WriteLine("Validator: {0}", propertyItem.Validator) ' Display the ValueOrigin property. Console.WriteLine("ValueOrigin: {0}", propertyItem.ValueOrigin) Next Console.WriteLine("") Console.WriteLine("Configuration - Accessing an Attribute") ' Create EllementInformation object. Dim elementInfo As ElementInformation = _ configSection.ElementInformation() ' Create a PropertyInformationCollection object. Dim propertyInfoCollection As PropertyInformationCollection = _ elementInfo.Properties() ' Create a PropertyInformation object. Dim myPropertyInfo As PropertyInformation = _ propertyInfoCollection("enabled") ' Display the property value. Console.WriteLine _ ("anonymousIdentification Section - Enabled: {0}", _ myPropertyInfo.Value) Catch e As Exception ' Error. Console.WriteLine("Error: {0}", _ e.Message.ToString()) End Try ' Display and wait. Console.ReadLine() End Sub End Class End Namespace
#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.ConfigurationExamples { class UsingPropertyInformation { 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. AnonymousIdentificationSection configSection = (AnonymousIdentificationSection)config.GetSection ("system.web/anonymousIdentification"); // Display title. Console.WriteLine("Configuration PropertyInformation"); Console.WriteLine("Section: anonymousIdentification"); // Instantiate a new PropertyInformationCollection object. PropertyInformationCollection propCollection = configSection.ElementInformation.Properties; // Display Collection Count. Console.WriteLine("Collection Count: {0}", propCollection.Count); // Display properties of elements // of the PropertyInformationCollection. foreach (PropertyInformation propertyItem in propCollection) { Console.WriteLine(); Console.WriteLine("Property Details:"); // Display the Name property. Console.WriteLine("Name: {0}", propertyItem.Name); // Display the Value property. Console.WriteLine("Value: {0}", propertyItem.Value); // Display the DefaultValue property. Console.WriteLine("DefaultValue: {0}", propertyItem.DefaultValue); // Display the Type property. Console.WriteLine("Type: {0}", propertyItem.Type); // Display the IsKey property. Console.WriteLine("IsKey: {0}", propertyItem.IsKey); // Display the IsLocked property. Console.WriteLine("IsLocked: {0}", propertyItem.IsLocked); // Display the IsModified property. Console.WriteLine("IsModified: {0}", propertyItem.IsModified); // Display the IsRequired property. Console.WriteLine("IsRequired: {0}", propertyItem.IsRequired); // Display the LineNumber property. Console.WriteLine("LineNumber: {0}", propertyItem.LineNumber); // Display the Source property. Console.WriteLine("Source: {0}", propertyItem.Source); // Display the Validator property. Console.WriteLine("Validator: {0}", propertyItem.Validator); // Display the ValueOrigin property. Console.WriteLine("ValueOrigin: {0}", propertyItem.ValueOrigin); } Console.WriteLine(""); Console.WriteLine("Configuration - Accessing an Attribute"); // Create EllementInformation object. ElementInformation elementInfo = configSection.ElementInformation; // Create a PropertyInformationCollection object. PropertyInformationCollection propertyInfoCollection = elementInfo.Properties; // Create a PropertyInformation object. PropertyInformation myPropertyInfo = propertyInfoCollection["enabled"]; // Display the property value. Console.WriteLine ("anonymousIdentification Section - Enabled: {0}", myPropertyInfo.Value); } catch (Exception e) { // Error. Console.WriteLine(e.ToString()); } // Display and wait. Console.ReadLine(); } } }

System.Configuration.PropertyInformation


Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
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