WebBaseEvent Classe

Definizione

Definisce la classe base per gli eventi di monitoraggio dello stato di ASP.NET.Defines the base class for the ASP.NET health-monitoring events.

public ref class WebBaseEvent
public class WebBaseEvent
type WebBaseEvent = class
Public Class WebBaseEvent
Ereditarietà
WebBaseEvent
Derivato

Esempio

Nell'esempio seguente viene illustrato come derivare dalla WebBaseEvent classe per creare un evento di monitoraggio dell'integrità personalizzato.The following example shows how to derive from the WebBaseEvent class to create a custom health-monitoring event.


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

namespace SamplesAspNet
{
  // Implements a custom WebBaseEvent class. 
    public class SampleWebBaseEvent :
        System.Web.Management.WebBaseEvent, IWebEventCustomEvaluator
    {
        private string customCreatedMsg, customRaisedMsg;

        // Store firing record info.
        private static string firingRecordInfo;

        // Implements the IWebEventCustomEvaluator.CanFire 
        // method. It is called by the ASP.NET if this custom
        // type is configured in the profile
        // element of the healthMonitoring section.
        public bool CanFire(
            System.Web.Management.WebBaseEvent e, 
            RuleFiringRecord rule)
        {

            bool fireEvent;
            string lastFired = rule.LastFired.ToString();
            string timesRaised = rule.TimesRaised.ToString();

            // Fire every other event raised.
            fireEvent =
                (rule.TimesRaised % 2 == 0) ? true : false;

            if (fireEvent)
            {
                firingRecordInfo =
                    string.Format("Event last fired: {0}",
                    lastFired) +
                    string.Format(". Times raised: {0}",
                    timesRaised);
            }
            else
                firingRecordInfo =
                  string.Format(
                   "Event not fired. Times raised: {0}",
                   timesRaised);

            return fireEvent;
        }

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

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


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

            // Raise the event.
            base.Raise();
        }


        // Raises the SampleWebBaseEvent.
        public void CustomRaise(
            System.Web.Management.WebBaseEvent evnt)
        {
            
            // Raise the event.
            Raise(evnt);
        }


        // Gets the event code.
        public int GetEventCode(bool detail)
        {
            int eCode;

            if (!detail)
                // Get the event code.
                eCode = EventCode;

            else
                // Get the detail event code.
                eCode = EventDetailCode;

            return eCode;
        }

        // Gets the event sequence.
        public long GetEventSequence()
        {
            // Get the event sequence.
            long eventSequence = EventSequence;
            return eventSequence;
        }

        // Gets the event source.
        public Object GetEventSource()
        {
            // Get the event source.
            Object source = this.EventSource;
            return source;
        }

        // Gets the event time.
        public DateTime GetEventTime()
        {
            // Get the event source.
            DateTime eTime = EventTime;
            return eTime;
        }

        // Gets the event time.
        public DateTime GetEventTimeUtc()
        {
            // Get the event source.
            DateTime eTime = EventTimeUtc;
            return eTime;
        }

        // Gets the event sequence.
        public string GetEventMessage()
        {
            // Get the event message.
            string eventMsg = Message;
            return eventMsg;
        }

        // Gets the current application information.
        public WebApplicationInformation GetEventAppInfo()
        {
            // Get the event message.
            WebApplicationInformation appImfo = 
                ApplicationInformation;
            return appImfo;
        }

        // Implements the ToString() method.
        public override string ToString()
        {
            return base.ToString();
        }

        // Implements the ToString(bool, bool) method.
        public string customToString(bool includeAppInfo, 
            bool includeCustomInfo)
        {
            return (
                base.ToString(includeAppInfo, 
                includeCustomInfo));
        }

        // Gets the event identifier.
        public Guid GetEventId()
        {
            Guid evId =  EventID;
            return evId;
        }

        //Formats Web request event information.
        public override void FormatCustomEventDetails(
            WebEventFormatter formatter)
        {
            base.FormatCustomEventDetails(formatter);

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

            formatter.IndentationLevel += 1;

            formatter.TabSize = 4;

            formatter.AppendLine(
                 "*SampleWebBaseEvent Start *");

            // Display custom event information.
            formatter.AppendLine(customCreatedMsg);
            formatter.AppendLine(customRaisedMsg);
            formatter.AppendLine(firingRecordInfo);

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


            formatter.IndentationLevel -= 1;
        }
    }
}
Imports System.Text
Imports System.Web
Imports System.Web.Management


Public Class SampleWebBaseEvent
    Inherits System.Web.Management.WebBaseEvent
    Implements System.Web.Management.IWebEventCustomEvaluator


    Private customCreatedMsg, customRaisedMsg As String

    ' Store firing record info.
    Private Shared firingRecordInfo As String

    ' Implements the IWebEventCustomEvaluator.CanFire 
    ' method. It is called by the ASP.NET if this custom
    ' type is configured in the profile
    ' element of the healthMonitoring section.
    Public Function CanFire( _
    ByVal e As System.Web.Management.WebBaseEvent, _
    ByVal rule As RuleFiringRecord) As Boolean _
    Implements System.Web.Management.IWebEventCustomEvaluator.CanFire

        Dim fireEvent As Boolean
        Dim lastFired As String = _
            rule.LastFired.ToString()
        Dim timesRaised As String = _
            rule.TimesRaised.ToString()

        ' Fire every other event raised.
        fireEvent = _
        IIf(rule.TimesRaised Mod 2 = 0, True, False)

        If fireEvent Then
            firingRecordInfo = String.Format( _
            "Event last fired: {0}", lastFired) + _
            String.Format( _
            ". Times raised: {0}",  timesRaised) 
          
        Else
            firingRecordInfo = String.Format( _
            "Event not fired. Times raised: {0}", _
            timesRaised)
        End If

        Return fireEvent

    End Function 'CanFire

 
    ' Invoked in case of events identified only by 
    ' their event code.
    Public Sub New(ByVal msg As String, _
    ByVal eventSource As Object, _
    ByVal eventCode As Integer)
        MyBase.New(msg, eventSource, eventCode)
        ' Perform custom initialization.
        customCreatedMsg = String.Format( _
        "Event created at: {0}", DateTime.Now.TimeOfDay.ToString())

    End Sub


    ' Invoked in case of events identified by their 
    ' event code.and related event detailed code.
    Public Sub New(ByVal msg As String, _
    ByVal eventSource As Object, _
    ByVal eventCode As Integer, _
    ByVal eventDetailCode As Integer)
        MyBase.New(msg, eventSource, _
        eventCode, eventDetailCode)
        ' Perform custom initialization.
        customCreatedMsg = String.Format( _
        "Event created at: {0}", DateTime.Now.TimeOfDay.ToString())

    End Sub


    ' Raises the SampleWebBaseEvent.
    Public Overrides Sub Raise()
        ' Perform custom processing. 
        customRaisedMsg = String.Format( _
        "Event raised at: {0}", DateTime.Now.TimeOfDay.ToString())

        ' Raise the event.
        MyBase.Raise()

    End Sub

    ' Raises the SampleWebBaseEvent.
    Public Sub CustomRaise(ByVal evnt _
    As System.Web.Management.WebBaseEvent)

        ' Raise the event.
        Raise(evnt)

    End Sub


    ' Gets the event code.
    Public Function GetEventCode(ByVal detail _
    As Boolean) As Integer
        Dim eCode As Integer

        If Not detail Then
            ' Get the event code.
            eCode = EventCode
            ' Get the detail event code.
        Else
            eCode = EventDetailCode
        End If
        Return eCode

    End Function 'GetEventCode


    ' Gets the event sequence.
    Public Function GetEventSequence() As Long
        ' Get the event sequence.
        Dim eventSequence As Long = eventSequence
        Return eventSequence

    End Function 'GetEventSequence



    ' Gets the event source.
    Public Function GetEventSource() As [Object]
        ' Get the event source.
        Dim [source] As [Object] = Me.EventSource
        Return [source]

    End Function 'GetEventSource

    ' Gets the event time.
    Public Function GetEventTime() As DateTime
        ' Get the event source.
        Dim eTime As DateTime = EventTime
        Return eTime

    End Function 'GetEventTime

    ' Gets the event time.
    Public Function GetEventTimeUtc() As DateTime
        ' Get the event source.
        Dim eTime As DateTime = EventTimeUtc
        Return eTime

    End Function 'GetEventTimeUtc

    ' Gets the event sequence.
    Public Function GetEventMessage() As String
        ' Get the event message.
        Dim eventMsg As String = Message
        Return eventMsg

    End Function 'GetEventMessage

    ' Gets the current application information.
    Public Function GetEventAppInfo() As WebApplicationInformation
        ' Get the event message.
        Dim appImfo As WebApplicationInformation = _
        ApplicationInformation
        Return appImfo

    End Function 'GetEventAppInfo

    ' Implements the ToString() method.
    Public Overrides Function ToString() As String
        Return MyBase.ToString()

    End Function 'ToString

    ' Implements the ToString(bool, bool) method.
    Public Function customToString(ByVal includeAppInfo As Boolean, _
    ByVal includeCustomInfo As Boolean) As String
        Return MyBase.ToString(includeAppInfo, includeCustomInfo)

    End Function 'customToString

    ' Gets the event identifier.
    Public Function GetEventId() As Guid
        Dim evId As Guid = EventID
        Return evId

    End Function 'GetEventId

    
    'Formats Web request event information.
    Public Overrides Sub FormatCustomEventDetails( _
ByVal formatter As WebEventFormatter)
        MyBase.FormatCustomEventDetails(formatter)

        ' Add custom data.
        formatter.AppendLine("")

        formatter.IndentationLevel += 1
        
        formatter.TabSize = 4
        
        formatter.AppendLine("*SampleWebBaseEvent Start *")
        formatter.AppendLine("Custom information goes here")
        formatter.AppendLine("* SampleWebBaseEvent End *")
        ' Display custom event timing.
        formatter.AppendLine(customCreatedMsg)
        formatter.AppendLine(customRaisedMsg)
        formatter.IndentationLevel -= 1

    End Sub

End Class

L'esempio seguente è un estratto del file di configurazione che consente a ASP.NET di usare l'evento personalizzato.The following example is an excerpt of the configuration file that enables ASP.NET to use the custom event.

<healthMonitoring enabled="true" heartBeatInterval="0">  
  <eventMappings>  
    <add  name="SampleWebBaseEvent"   
      type="SamplesAspNet.SampleWebBaseEvent,   
      webbaseevent, Version=1.0.1573.24438, Culture=neutral,   
      PublicKeyToken=2f5f337ae5c9bdaa,   
      processorArchitecture=MSIL" />  
  </eventMappings>  

  <rules>  
    <add   
      name="CustomWebBaseEvent"  
      eventName="SampleWebBaseEvent"   
      provider="EventLogProvider"   
      profile="Critical"/>      
  </rules>  
</healthMonitoring>  

Commenti

Il monitoraggio dell'integrità di ASP.NET consente al personale operativo e di produzione di gestire le applicazioni Web distribuite.ASP.NET health monitoring allows production and operations staff to manage deployed Web applications. Lo System.Web.Management spazio dei nomi contiene i tipi di eventi di integrità responsabili della creazione del pacchetto dei dati sullo stato di integrità dell'applicazione e dei tipi di provider responsabili dell'elaborazione dei dati.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. Contiene anche i tipi di supporto che consentono di gestire gli eventi di integrità.It also contains supporting types that help during the management of health events.

La WebBaseEvent classe è la radice dell'albero di ereditarietà per tutti i tipi di evento di monitoraggio dello stato di ASP.NET.The WebBaseEvent class is the root of the inheritance tree for all the ASP.NET health-monitoring event types. Usa la WebApplicationInformation classe per ottenere informazioni sull'applicazione disponibili per la classe derivata.It uses the WebApplicationInformation class to obtain application information that is available to its derived class.

Nota

Nella maggior parte dei casi sarà possibile usare i tipi di monitoraggio dello stato di ASP.NET come implementato e si controllerà il sistema di monitoraggio dell'integrità specificando i valori nella <healthMonitoring> sezione di configurazione.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. È anche possibile derivare dai tipi di monitoraggio dell'integrità per creare provider e eventi personalizzati.You can also derive from the health-monitoring types to create your own custom events and providers. Per un esempio di derivazione dalla WebBaseEvent classe, vedere l'esempio fornito in questo argomento.For an example of deriving from the WebBaseEvent class, see the example provided in this topic.

Note per gli eredi

Quando si formattano le informazioni sull'evento personalizzato per la visualizzazione, eseguire l'override del FormatCustomEventDetails(WebEventFormatter) metodo anziché del ToString metodo.When you format your custom event information for display, override the FormatCustomEventDetails(WebEventFormatter) method rather than the ToString method. In questo modo si eviterà la sovrascrittura o la manomissione delle informazioni sensibili sul sistema.This will avoid overwriting or tampering with sensitive system information.

Il codice evento specificato per l'evento personalizzato deve essere maggiore di WebExtendedBase .The event code you specify for your custom event must be greater than WebExtendedBase.

Costruttori

WebBaseEvent(String, Object, Int32)

Inizializza una nuova istanza della classe WebBaseEvent utilizzando i parametri forniti.Initializes a new instance of the WebBaseEvent class using the supplied parameters.

WebBaseEvent(String, Object, Int32, Int32)

Inizializza una nuova istanza della classe WebBaseEvent utilizzando i parametri forniti.Initializes a new instance of the WebBaseEvent class using the supplied parameters.

Proprietà

ApplicationInformation

Ottiene un oggetto WebApplicationInformation contenente informazioni sull'applicazione corrente monitorata.Gets a WebApplicationInformation object that contains information about the current application being monitored.

EventCode

Ottiene il valore di codice associato all'evento.Gets the code value associated with the event.

EventDetailCode

Ottiene il codice dettagliato dell'evento.Gets the event detail code.

EventID

Ottiene l'identificatore associato all'evento.Gets the identifier associated with the event.

EventOccurrence

Ottiene un contatore che rappresenta il numero di occorrenze dell'evento.Gets a counter that represents the number of times the event has occurred.

EventSequence

Ottiene il numero di volte in cui l'evento è stato generato dall'applicazione.Gets the number of times the event has been raised by the application.

EventSource

Ottiene l'oggetto che genera l'evento.Gets the object that raises the event.

EventTime

Ottiene la data e l'ora in cui è stato generato l'evento.Gets the time when the event was raised.

EventTimeUtc

Ottiene la data e l'ora in cui è stato generato l'evento.Gets the time when the event was raised.

Message

Ottiene il messaggio nel quale è descritto l'evento.Gets the message that describes the event.

Metodi

Equals(Object)

Determina se l'oggetto specificato è uguale all'oggetto corrente.Determines whether the specified object is equal to the current object.

(Ereditato da Object)
FormatCustomEventDetails(WebEventFormatter)

Fornisce una formattazione standard delle informazioni relative all'evento.Provides standard formatting of the event information.

GetHashCode()

Funge da funzione hash predefinita.Serves as the default hash function.

(Ereditato da Object)
GetType()

Ottiene l'oggetto Type dell'istanza corrente.Gets the Type of the current instance.

(Ereditato da Object)
IncrementPerfCounters()

Utilizzato internamente per incrementare i contatori delle prestazioni.Used internally to increment performance counters.

MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.Creates a shallow copy of the current Object.

(Ereditato da Object)
Raise()

Genera un evento notificando a qualsiasi provider configurato che l'evento si è verificato.Raises an event by notifying any configured provider that the event has occurred.

Raise(WebBaseEvent)

Genera l'evento specificato notificando a qualsiasi provider configurato che l'evento si è verificato.Raises the specified event by notifying any configured provider that the event has occurred.

ToString()

Formatta le informazioni relative all'evento ai fini della visualizzazione.Formats event information for display purposes.

ToString(Boolean, Boolean)

Formatta le informazioni relative all'evento ai fini della visualizzazione.Formats event information for display purposes.

Si applica a

Vedi anche