WebBaseErrorEvent WebBaseErrorEvent WebBaseErrorEvent WebBaseErrorEvent Class

Definition

Serves as the base class for all the health-monitoring error events.

public ref class WebBaseErrorEvent : System::Web::Management::WebManagementEvent
public class WebBaseErrorEvent : System.Web.Management.WebManagementEvent
type WebBaseErrorEvent = class
    inherit WebManagementEvent
Public Class WebBaseErrorEvent
Inherits WebManagementEvent
Inheritance
Derived

Examples

The following code example has two parts. The first is an excerpt of a configuration file that enables ASP.NET health monitoring to use an event derived from the WebBaseErrorEvent class. The second shows how to derive from the WebBaseErrorEvent class to create the custom event.

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

  <providers>  
    <!-- Define the custom provider that   
         processes custom Web request events. -->  
    <add name="SampleWebEventProvider"   
      type="SamplesAspNet.SampleEventProvider,  
      webeventprovider,Version=1.0.1573.18094,   
      Culture=neutral, PublicKeyToken=b5a57a9a9d487cf4,   
      processorArchitecture=MSIL"/>  
  </providers>  

  <eventMappings>  

    <!--  Define the event source that issues custom events.   -->  
    <add  name="SampleWebBaseErrorEvent"      
      type="SamplesAspNet.SampleWebBaseErrorEvent,  
      webbaseerrorevent,Version=1.0.1573.21549, Culture=neutral,     
      PublicKeyToken=2a0b23915ac7352b, processorArchitecture=MSIL"/>  
  </eventMappings>  

  <rules>  
    <!-- Associate custom event with related   
      custom provider -->  
    <add   
       name="Custom Web Base Errors"  
       eventName="SampleWebBaseErrorEvent"   
       provider="SampleWebEventProvider"   
       profile="Custom"/>    
  </rules>  

</healthMonitoring>  

The following code shows how to derive from the WebBaseErrorEvent class to create a custom event.


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

namespace Samples.AspNet.Management
{
  // Implements a custom WebErrorEvent class. 

    public class SampleWebErrorEvent : WebErrorEvent
    {
        private StringBuilder eventInfo;

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


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

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

        // Obtains the current request information.
        public string GetRequestInfo()
        {
            string reqInfo = GetRequestInfo();
            return reqInfo;
        }


        // Obtains the current thread information.
        public string GetThreadInfo()
        {
            string threadInfo = GetThreadInfo();
            return threadInfo;
        }


        // Obtains the current process information.
        public string GetProcessInfo()
        {
            string procInfo = GetProcessInfo();
            return procInfo;
        }


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

            base.FormatCustomEventDetails(formatter);


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

            formatter.IndentationLevel += 1;
            formatter.AppendLine(
                "** SampleWebErrorEvent Start **");
          
            formatter.AppendLine(eventInfo.ToString());

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

            formatter.IndentationLevel -= 1;

            

        }
    }

}
Imports System
Imports System.Text
Imports System.Web
Imports System.Web.Management


' Implements a custom WebErrorEvent class. 

Public Class SampleWebErrorEvent
   Inherits WebErrorEvent
   Private eventInfo As StringBuilder
   
   
   ' 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, ByVal e As Exception)
        MyBase.New(msg, eventSource, eventCode, e)
        ' Perform custom initialization.
        eventInfo = New StringBuilder()
        eventInfo.Append(String.Format( _
        "Event created at: ", EventTime.ToString()))
    End Sub 'New
   
   
   ' 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 detailedCode As Integer, ByVal e As Exception)
        MyBase.New(msg, eventSource, _
        eventCode, detailedCode, e)
        ' Perform custom initialization.
        eventInfo = New StringBuilder()
        eventInfo.Append(String.Format( _
        "Event created at: ", EventTime.ToString()))
    End Sub 'New
   
   
   ' Raises the SampleWebErrorEvent.
   Public Overrides Sub Raise()
      ' Perform custom processing. 
        eventInfo.Append(String.Format( _
        "Event raised at: ", EventTime.ToString()))
      
      ' Raise the event.
      MyBase.Raise()
   End Sub 'Raise
   
   ' Obtains the current request information.
   Public Function GetRequestInfo() As String
      Dim reqInfo As String = GetRequestInfo()
      Return reqInfo
   End Function 'GetRequestInfo
   
   
   ' Obtains the current thread information.
   Public Function GetThreadInfo() As String
      Dim threadInfo As String = GetThreadInfo()
      Return threadInfo
   End Function 'GetThreadInfo
   
   
   ' Obtains the current process information.
   Public Function GetProcessInfo() As String
      Dim procInfo As String = GetProcessInfo()
      Return procInfo
   End Function 'GetProcessInfo
   
   
   '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.AppendLine( _
        "** SampleWebErrorEvent Start **")

        formatter.AppendLine(eventInfo.ToString())

        formatter.AppendLine( _
        "** SampleWebBaseErrorEvent End **")

        formatter.IndentationLevel -= 1
    End Sub 'FormatCustomEventDetails 

End Class 'SampleWebErrorEvent 


Remarks

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 WebBaseErrorEvent class is the base class for the health-monitoring events that represent error conditions. ASP.NET uses WebBaseErrorEvent and its derived types to indicate error conditions during the lifetime of a Web application.

Note

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 WebBaseErrorEvent class, see the example provided in this topic.

Constructors

WebBaseErrorEvent(String, Object, Int32, Exception) WebBaseErrorEvent(String, Object, Int32, Exception) WebBaseErrorEvent(String, Object, Int32, Exception) WebBaseErrorEvent(String, Object, Int32, Exception)

Initializes a new instance of the WebBaseErrorEvent class.

WebBaseErrorEvent(String, Object, Int32, Int32, Exception) WebBaseErrorEvent(String, Object, Int32, Int32, Exception) WebBaseErrorEvent(String, Object, Int32, Int32, Exception) WebBaseErrorEvent(String, Object, Int32, Int32, Exception)

Initializes a new instance of the WebBaseErrorEvent class.

Properties

ErrorException ErrorException ErrorException ErrorException

Gets the Exception associated with the error.

EventCode EventCode EventCode EventCode

Gets the code value associated with the event.

(Inherited from WebBaseEvent)
EventDetailCode EventDetailCode EventDetailCode EventDetailCode

Gets the event detail code.

(Inherited from WebBaseEvent)
EventID EventID EventID EventID

Gets the identifier associated with the event.

(Inherited from WebBaseEvent)
EventOccurrence EventOccurrence EventOccurrence EventOccurrence

Gets a counter that represents the number of times the event has occurred.

(Inherited from WebBaseEvent)
EventSequence EventSequence EventSequence EventSequence

Gets the number of times the event has been raised by the application.

(Inherited from WebBaseEvent)
EventSource EventSource EventSource EventSource

Gets the object that raises the event.

(Inherited from WebBaseEvent)
EventTime EventTime EventTime EventTime

Gets the time when the event was raised.

(Inherited from WebBaseEvent)
EventTimeUtc EventTimeUtc EventTimeUtc EventTimeUtc

Gets the time when the event was raised.

(Inherited from WebBaseEvent)
Message Message Message Message

Gets the message that describes the event.

(Inherited from WebBaseEvent)
ProcessInformation ProcessInformation ProcessInformation ProcessInformation

Gets information about the ASP.NET application-hosting process.

(Inherited from WebManagementEvent)

Methods

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
FormatCustomEventDetails(WebEventFormatter) FormatCustomEventDetails(WebEventFormatter) FormatCustomEventDetails(WebEventFormatter) FormatCustomEventDetails(WebEventFormatter)

Provides standard formatting of the event information.

(Inherited from WebBaseEvent)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
IncrementPerfCounters() IncrementPerfCounters() IncrementPerfCounters() IncrementPerfCounters()

Increments the event-error performance-related counters.

MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
Raise() Raise() Raise() Raise()

Raises an event by notifying any configured provider that the event has occurred.

(Inherited from WebBaseEvent)
ToString() ToString() ToString() ToString()

Formats event information for display purposes.

(Inherited from WebBaseEvent)
ToString(Boolean, Boolean) ToString(Boolean, Boolean) ToString(Boolean, Boolean) ToString(Boolean, Boolean)

Formats event information for display purposes.

(Inherited from WebBaseEvent)

Applies to

See also