HttpContext.CurrentNotification HttpContext.CurrentNotification HttpContext.CurrentNotification HttpContext.CurrentNotification Property

Definición

Obtiene un valor de RequestNotification que indica el evento HttpApplication actual que se está procesando.Gets a RequestNotification value that indicates the current HttpApplication event that is processing.

public:
 property System::Web::RequestNotification CurrentNotification { System::Web::RequestNotification get(); };
public System.Web.RequestNotification CurrentNotification { get; }
member this.CurrentNotification : System.Web.RequestNotification
Public ReadOnly Property CurrentNotification As RequestNotification

Valor de propiedad

Excepciones

La operación requiere el modo de canalización integrada de IIS 7.0IIS 7.0 y como mínimo la versión 3.0 de .NET Framework.The operation requires integrated pipeline mode in IIS 7.0IIS 7.0 and at least the .NET Framework version 3.0.

Ejemplos

En el ejemplo siguiente se muestra cómo utilizar CurrentNotification la propiedad para determinar qué evento HttpApplication del objeto que está controlando la solicitud actual se está procesando.The following example demonstrates how to use the CurrentNotification property to determine what event of the HttpApplication object that is handling the current request is being processed. En el ejemplo, el controlador de eventos controla varios eventos del HttpApplication objeto y la CurrentNotification propiedad determina qué código se invoca para cada evento que se está controlando.In the example, the event handler handles several events of the HttpApplication object, and the CurrentNotification property determines what code is invoked for each event being handled.

using System;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;

// Module that demonstrates one event handler for several events.
namespace Samples
{
    public class ModuleExampleTestCS : IHttpModule
    {
        public ModuleExampleTestCS()
        {
            // Constructor
        }
        public void Init(HttpApplication app)
        {
            app.AuthenticateRequest += new EventHandler(App_Handler);
            app.PostAuthenticateRequest += new EventHandler(App_Handler);
            app.LogRequest += new EventHandler(App_Handler);
            app.PostLogRequest += new EventHandler(App_Handler);
        }
        public void Dispose()
        {
        }
        // One handler for AuthenticationRequest, PostAuthenticateRequest,
	// LogRequest, and PostLogRequest events
        public void App_Handler(object source, EventArgs e)
        {
            HttpApplication app = (HttpApplication)source;
            HttpContext context = app.Context;

            if (context.CurrentNotification == RequestNotification.AuthenticateRequest)
            {

                if (!context.IsPostNotification)
                {
                    // Put code here that is invoked when the AuthenticateRequest event is raised.
                }
                else
                {
                    // PostAuthenticateRequest 
                    // Put code here that runs after the AuthenticateRequest event completes.
                }
            }
            if (context.CurrentNotification == RequestNotification.LogRequest)
            {
                if (!context.IsPostNotification)
                {
                    // Put code here that is invoked when the LogRequest event is raised.
                }
                else
                {
                    // PostLogRequest
                    // Put code here that runs after the LogRequest event completes.
                }
            }

        }
    }
}
Imports System.Data
Imports System.Web
Imports System.Web.Security
Imports System.Web.UI

' Module that demonstrates one event handler for several events.
Namespace Samples

    Public Class ModuleExampleTestVB
        Implements IHttpModule

        Public Sub New()
            ' Constructor
        End Sub

        Public Sub Init(ByVal app As HttpApplication) Implements IHttpModule.Init
            AddHandler app.AuthenticateRequest, AddressOf Me.App_Handler
            AddHandler app.PostAuthenticateRequest, AddressOf Me.App_Handler
            AddHandler app.LogRequest, AddressOf Me.App_Handler
            AddHandler app.PostLogRequest, AddressOf Me.App_Handler
        End Sub

        Public Sub Dispose() Implements IHttpModule.Dispose
        End Sub

        ' One handler for AuthenticationRequest, PostAuthenticateRequest,
	' LogRequest, and PostLogRequest events
        Public Sub App_Handler(ByVal source As Object, ByVal e As EventArgs)
            Dim app As HttpApplication = CType(source, HttpApplication)
            Dim context As HttpContext = app.Context

            If (context.CurrentNotification = RequestNotification.AuthenticateRequest) Then

                If Not (context.IsPostNotification) Then

                    ' Put code here that is invoked when the AuthenticateRequest event is raised.
                Else

                    ' PostAuthenticateRequest 
                    ' Put code here that runs after the AuthenticateRequest event completes.

                End If
            End If

            If (context.CurrentNotification = RequestNotification.LogRequest) Then

                If Not (context.IsPostNotification) Then

                    ' Put code here that is invoked when the LogRequest event is raised.

                Else
                    ' PostLogRequest
                    ' Put code here that runs after the LogRequest event completes.

                End If
            End If
        End Sub
    End Class

End Namespace

Comentarios

La CurrentNotification propiedad requiere el modo de canalización IIS 7.0IIS 7.0 integrada en y al menos la .NET Framework versión 3,0.The CurrentNotification property requires the integrated pipeline mode in IIS 7.0IIS 7.0 and at least the .NET Framework version 3.0. Cuando está disponible, la propiedad devuelve RequestNotification un valor.When available, the property returns a RequestNotification value. El valor de la CurrentNotification propiedad indica qué evento de la HttpApplication instancia está procesando actualmente la solicitud.The value of the CurrentNotification property indicates which event in the HttpApplication instance is currently processing the request.

La CurrentNotification propiedad no está pensada para establecerse.The CurrentNotification property is not intended to be set. En su lugar, se establece mediante IIS 7.0IIS 7.0 durante el procesamiento de la solicitud en la canalización ASP.net.Instead, it is set by IIS 7.0IIS 7.0 during the processing of the request in the ASP.NET pipeline. Si se CurrentNotification establece la propiedad, se producirá un error de compilación.Setting the CurrentNotification property will result in a compilation error.

CurrentNotificationse incluye en la versión .NET Framework 3,5.CurrentNotification is introduced in the .NET Framework version 3.5. Para más información, vea Versiones y dependencias.For more information, see Versions and Dependencies.

Se aplica a

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