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WebSuccessAuditEvent Class

Provides information about successful security events.

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

[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class WebSuccessAuditEvent : WebAuditEvent

ASP.NET health monitoring allows production and operations staff to manage deployed Web applications. The System.Web.Management namespace contains the health event types responsible for packaging application health-status data and the provider types responsible for processing this data. It also contains supporting types that help during the management of health events.

The WebSuccessAuditEvent class is used when a successful security-related operation occurs. An example of this is a successful URL authorization for a Web request.

The following list describes the features for which events of type WebSuccessAuditEvent are raised by ASP.NET:

When a WebSuccessAuditEvent is raised, ASP.NET health monitoring increments the related Audit Success Events Raised performance counter and then checks the healthMonitoring configuration to determine whether any providers subscribe to the event. If providers subscribe to the event, ASP.NET dispatches the event to them for processing.


To view the Audit Success Event Raised performance counter in System Monitor (PerfMon), in the Add Counters window select ASP.NET from the Performance object drop-down list, select the Audit Success Event Raised performance counter, and click the Add button. For more information, see Monitoring ASP.NET Application Performance.

Because success audits represent an expected condition, you may not want to subscribe to them. You can subscribe to them in order to provide access auditing for the site.


In most cases you will be able to use the ASP.NET health-monitoring types as implemented, and you will control the health-monitoring system by specifying values in the healthMonitoring configuration section. You can also derive from the health-monitoring types to create your own custom events and providers. For an example of deriving from the WebSuccessAuditEvent class, see the example provided in this topic.

The following code example shows how to derive from the WebSuccessAuditEvent class to create a custom audit event.

using System;
using System.Text;
using System.Web;
using System.Web.Management;

namespace SamplesAspNet
    // Implements a custom WebSuccessAuditEvent class.  
    public class SampleWebSuccessAuditEvent :
        private string customCreatedMsg, customRaisedMsg;

        // Invoked in case of events identified only by their event code. 
        public SampleWebSuccessAuditEvent(string msg, 
            object eventSource, int eventCode)
        base(msg, eventSource, eventCode)
            // Perform custom initialization.
            customCreatedMsg =
                string.Format("Event created at: {0}",

        // Invoked in case of events identified by their event code.and  
        // event detailed code. 
        public SampleWebSuccessAuditEvent(string msg, object eventSource,
            int eventCode, int detailedCode)
        base(msg, eventSource, eventCode, detailedCode)
            // Perform custom initialization.
            customCreatedMsg =
            string.Format("Event created at: {0}",

        // Raises the SampleWebSuccessAuditEvent. 
        public override void Raise()
            // Perform custom processing.
            customRaisedMsg =
                string.Format("Event raised at: {0}", 

            // Raise the event.

        // Obtains the current thread information. 
        public WebRequestInformation GetRequestInformation()
            // No customization allowed. 
            return RequestInformation;

        //Formats Web request event information. 
        //This method is invoked indirectly by the provider using one of the 
        //overloaded ToString methods. 
        public override void FormatCustomEventDetails(WebEventFormatter formatter)

            // Add custom data.

            formatter.IndentationLevel += 1;
                "******** SampleWebSuccessAuditEvent Start ********");
            formatter.AppendLine(string.Format("Request path: {0}",
            formatter.AppendLine(string.Format("Request Url: {0}",

            // Display custom event timing.

                "******** SampleWebSuccessAuditEvent End ********");

            formatter.IndentationLevel -= 1;



The following example is an excerpt of the configuration file that enables ASP.NET health monitoring to use the event.

    <add name="EventLogProvider" 
    <add  name="SampleWebSuccessAuditEvent" 
    <add name="Custom Failure Audit Default"
      eventName=" SampleWebFailureAuditEvent "

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0