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HttpApplication.LogRequest Event

Occurs just before ASP.NET performs any logging for the current request.

Namespace:  System.Web
Assembly:  System.Web (in System.Web.dll)

public event EventHandler LogRequest

The LogRequest event is raised even if an error occurs. You can provide an event handler for the LogRequest event to provide custom logging for the request.

For more information about how to handle events, see Consuming Events.

LogRequest is introduced in the .NET Framework version 3.5. For more information, see .NET Framework Versions and Dependencies.

The following example demonstrates how to provide an event handler for the LogRequest event. The event handler also handles several other events. Therefore, the CurrentNotification and IsPostNotification properties are used to determine what code to run.

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.
                }
            }

        }
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5 SP1, 3.0 SP1, 2.0 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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