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WebManagementEvent Class

Defines the base class for events that carry application and process information.

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

[PermissionSetAttribute(SecurityAction.InheritanceDemand, Unrestricted = true)]
public class WebManagementEvent : WebBaseEvent

The WebManagementEvent type exposes the following members.

  NameDescription
Protected methodWebManagementEvent(String, Object, Int32)Infrastructure. Initializes a new instance of the WebManagementEvent class using the supplied parameters.
Protected methodWebManagementEvent(String, Object, Int32, Int32)Infrastructure. Initializes a new instance of the WebManagementEvent class using the supplied parameters.
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  NameDescription
Public propertyEventCodeGets the code value associated with the event. (Inherited from WebBaseEvent.)
Public propertyEventDetailCodeGets the event detail code. (Inherited from WebBaseEvent.)
Public propertyEventIDGets the identifier associated with the event. (Inherited from WebBaseEvent.)
Public propertyEventOccurrenceGets a counter that represents the number of times the event has occurred. (Inherited from WebBaseEvent.)
Public propertyEventSequenceGets the number of times the event has been raised by the application. (Inherited from WebBaseEvent.)
Public propertyEventSourceGets the object that raises the event. (Inherited from WebBaseEvent.)
Public propertyEventTimeGets the time when the event was raised. (Inherited from WebBaseEvent.)
Public propertyEventTimeUtcGets the time when the event was raised. (Inherited from WebBaseEvent.)
Public propertyMessageGets the message that describes the event. (Inherited from WebBaseEvent.)
Public propertyProcessInformationGets information about the ASP.NET application-hosting process.
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodFormatCustomEventDetailsProvides standard formatting of the event information. (Inherited from WebBaseEvent.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodIncrementPerfCountersInfrastructure. Used internally to increment performance counters. (Inherited from WebBaseEvent.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodRaise()Raises an event by notifying any configured provider that the event has occurred. (Inherited from WebBaseEvent.)
Public methodToString()Formats event information for display purposes. (Inherited from WebBaseEvent.)
Public methodToString(Boolean, Boolean)Formats event information for display purposes. (Inherited from WebBaseEvent.)
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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 WebManagementEvent is the base class for all the ASP.NET health-monitoring event types. It uses the WebProcessInformation class to obtain process information that is available to its derived classes.

NoteNote

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 WebManagementEvent class, see the example provided in this topic.

Notes to Inheritors

When formatting your custom event information for display, override the FormatCustomEventDetails method rather than the ToString method. This will avoid overwriting or tampering with sensitive system information.

The event code you specify for your custom event must be greater than WebExtendedBase.

The following example shows how to implement a custom event by deriving it from the WebManagementEvent class.


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

namespace Samples.AspNet.Management
{
    // Implements a custom  
    // WebManagementEvent class.  
    public class SampleWebManagementEvent : 
        WebManagementEvent
    {
        private StringBuilder eventInfo;

        // Invoked in case of events  
        // identified only by their event code. 
        public SampleWebManagementEvent(string msg, 
            object eventSource, int eventCode):
        base(msg, eventSource, eventCode)
        {
            // Perform custom initialization.
            eventInfo = new StringBuilder();
            eventInfo.Append(string.Format(
                "Event created at: ", 
                EventTime.ToString()));
        }


        // Invoked in case of events identified  
        // by their event code.and related  
        // event detailed code. 
        public SampleWebManagementEvent(string msg, 
            object eventSource, int eventCode, 
            int eventDetailCode):
          base(msg, eventSource, 
            eventCode, eventDetailCode)
        {
            // Perform custom initialization.
            eventInfo = new StringBuilder();
            eventInfo.Append(string.Format(
                "Event created at: ", 
                EventTime.ToString()));
        }


        // Raises the SampleWebRequestEvent. 
        public override void Raise()
        {
            // Perform custom processing. 
            eventInfo.Append(string.Format(
                "Event raised at: ", 
                EventTime.ToString()));
            // Raise the event. 
            base.Raise();
        }


        // Obtains the current process information. 
        public string GetProcessInfo()
        {
            StringBuilder tempPi = new StringBuilder();
            WebProcessInformation pi = ProcessInformation;
            tempPi.Append(
                pi.ProcessName + Environment.NewLine);
            tempPi.Append(
                pi.ProcessID.ToString() + Environment.NewLine);
            tempPi.Append(
                pi.AccountName + Environment.NewLine);
            return tempPi.ToString();
        }


        public override void FormatCustomEventDetails(
            WebEventFormatter formatter)
        {
            base.FormatCustomEventDetails(formatter);

            // Add custom data.
            formatter.AppendLine("");

            formatter.IndentationLevel += 1;
            formatter.AppendLine(
                "** SampleWebManagementEvent Start **");

            // Add custom data.
            formatter.AppendLine(eventInfo.ToString());

            formatter.AppendLine(
                      "** SampleWebManagementEvent End **");

        }
    }

}

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

<healthMonitoring enabled="true" 
  heartBeatInterval="0">
  <eventMappings>

    <add  name="SampleWebManagementEvent" type="SamplesAspNet.SampleWebManagementEvent,webmanagementevent,Version=1.0.1573.24438, Culture=neutral, PublicKeyToken=2f5f337ae5c9bdaa, processorArchitecture=MSIL"/>

  </eventMappings>
  <rules>
    <add 
      name="Custom WebManagementEvent"
      eventName="SampleWebManagementEvent"
      provider="EventLogProvider"
      profile="Critical"/>
  </rules>
</healthMonitoring>

.NET Framework

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

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.

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