ContextInformation ContextInformation ContextInformation ContextInformation Class

定义

封装与 ConfigurationElement 对象关联的上下文信息。Encapsulates the context information that is associated with a ConfigurationElement object. 此类不能被继承。This class cannot be inherited.

public ref class ContextInformation sealed
public sealed class ContextInformation
type ContextInformation = class
Public NotInheritable Class ContextInformation
继承
ContextInformationContextInformationContextInformationContextInformation

示例

下面的代码示例演示如何使用ContextInformation类型。The following code example demonstrates how to use the ContextInformation type.

#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.Aspnet.ConfigurationSample
{
  class UsingContextInformation
  {
    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.
        HealthMonitoringSection configSection =
          (HealthMonitoringSection)config.GetSection("system.web/healthMonitoring");

        // 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);

          // IsMachineLevel property.
          Console.WriteLine("IsMachineLevel: {0}",
            config.EvaluationContext.IsMachineLevel);

          // Create an object based on HostingContext.
          WebContext myWC =
            (WebContext)config.EvaluationContext.HostingContext;
          // Use the WebContext object to determine
          // the ApplicationLevel.
          Console.WriteLine("ApplicationLevel: {0}",
            myWC.ApplicationLevel);
        }

      catch (Exception e)
      {
        // Error.
        Console.WriteLine(e.ToString());
      }

      // Display and wait.
      Console.ReadLine();
    }
  }
}
Imports System
Imports System.Collections
Imports System.Collections.Generic
Imports System.Text
Imports System.Configuration
Imports System.Web
Imports System.Web.Configuration

Namespace Samples.Aspnet.ConfigurationSample
  Class UsingContextInformation
    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 _
          System.Web.Configuration.HealthMonitoringSection = _
          CType(config.GetSection("system.web/healthMonitoring"), _
          System.Web.Configuration.HealthMonitoringSection)

        ' 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)

        ' IsMachineLevel property.
        Console.WriteLine("IsMachineLevel: {0}", _
          config.EvaluationContext.IsMachineLevel)

        ' Create an object based on HostingContext.
        Dim myWC As WebContext = _
          config.EvaluationContext.HostingContext
        ' Use the WebContext object to determine
        ' the ApplicationLevel.
        Console.WriteLine("ApplicationLevel: {0}", _
          myWC.ApplicationLevel)

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

注解

ContextInformation对象提供了相关的配置元素的环境详细信息。The ContextInformation object provides environment details related to an element of the configuration. 例如,可以使用IsMachineLevel属性来确定是否ConfigurationElement已在 Machine.config 中设置或可以确定哪些层次结构ConfigurationElement属于使用HostingContext属性。For instance, you can use the IsMachineLevel property to determine whether a ConfigurationElement was set in Machine.config, or you can determine which hierarchy a ConfigurationElement belongs to by using the HostingContext property.

属性

HostingContext HostingContext HostingContext HostingContext

获取正在计算配置属性的环境的上下文。Gets the context of the environment where the configuration property is being evaluated.

IsMachineLevel IsMachineLevel IsMachineLevel IsMachineLevel

获取一个值,该值指定是否正在计算机配置级别计算配置属性。Gets a value specifying whether the configuration property is being evaluated at the machine configuration level.

方法

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

确定指定的对象是否等于当前对象。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

作为默认哈希函数。Serves as the default hash function.

(Inherited from Object)
GetSection(String) GetSection(String) GetSection(String) GetSection(String)

提供一个包含基于指定节名称的配置节信息的对象。Provides an object containing configuration-section information based on the specified section name.

GetType() GetType() GetType() GetType()

获取当前实例的 TypeGets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

返回表示当前对象的字符串。Returns a string that represents the current object.

(Inherited from Object)

适用于