WebManagementEvent Class
Definition
Important
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Defines the base class for events that carry application and process information.
public ref class WebManagementEvent : System::Web::Management::WebBaseEvent
public class WebManagementEvent : System.Web.Management.WebBaseEvent
type WebManagementEvent = class
inherit WebBaseEvent
Public Class WebManagementEvent
Inherits WebBaseEvent
- Inheritance
- Derived
Examples
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 **");
}
}
}
Imports System.Text
Imports System.Web
Imports System.Web.Management
' Implements a custom
' WebManagementEvent class.
Public Class SampleWebManagementEvent
Inherits WebManagementEvent
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)
MyBase.New(msg, eventSource, eventCode)
' Perform custom initialization.
eventInfo = New StringBuilder()
eventInfo.Append(String.Format( _
"Event created at: ", EventTime.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.
eventInfo = New StringBuilder()
eventInfo.Append(String.Format( _
"Event created at: ", EventTime.ToString()))
End Sub
' Raises the SampleWebRequestEvent.
Public Overrides Sub Raise()
' Perform custom processing.
eventInfo.Append(String.Format( _
"Event raised at: ", EventTime.ToString()))
' Raise the event.
MyBase.Raise()
End Sub
' Obtains the current process information.
Public Function GetProcessInfo() As String
Dim tempPi As New StringBuilder()
Dim pi As WebProcessInformation = ProcessInformation
tempPi.Append( _
(pi.ProcessName + Environment.NewLine))
tempPi.Append( _
(pi.ProcessID.ToString() + Environment.NewLine))
tempPi.Append( _
(pi.AccountName + Environment.NewLine))
Return tempPi.ToString()
End Function 'GetProcessInfo
Public Overrides Sub FormatCustomEventDetails( _
ByVal formatter As WebEventFormatter)
MyBase.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 **")
End Sub
End Class
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>
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 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.
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 WebManagementEvent class, see the example provided in this topic.
Notes to Inheritors
When formatting your custom event information for display, override the FormatCustomEventDetails(WebEventFormatter) 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.
Constructors
WebManagementEvent(String, Object, Int32) |
Initializes a new instance of the WebManagementEvent class using the supplied parameters. |
WebManagementEvent(String, Object, Int32, Int32) |
Initializes a new instance of the WebManagementEvent class using the supplied parameters. |
Properties
EventCode |
Gets the code value associated with the event. (Inherited from WebBaseEvent) |
EventDetailCode |
Gets the event detail code. (Inherited from WebBaseEvent) |
EventID |
Gets the identifier associated with the event. (Inherited from WebBaseEvent) |
EventOccurrence |
Gets a counter that represents the number of times the event has occurred. (Inherited from WebBaseEvent) |
EventSequence |
Gets the number of times the event has been raised by the application. (Inherited from WebBaseEvent) |
EventSource |
Gets the object that raises the event. (Inherited from WebBaseEvent) |
EventTime |
Gets the time when the event was raised. (Inherited from WebBaseEvent) |
EventTimeUtc |
Gets the time when the event was raised. (Inherited from WebBaseEvent) |
Message |
Gets the message that describes the event. (Inherited from WebBaseEvent) |
ProcessInformation |
Gets information about the ASP.NET application-hosting process. |
Methods
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
FormatCustomEventDetails(WebEventFormatter) |
Provides standard formatting of the event information. (Inherited from WebBaseEvent) |
GetHashCode() |
Serves as the default hash function. (Inherited from Object) |
GetType() |
Gets the Type of the current instance. (Inherited from Object) |
IncrementPerfCounters() |
Used internally to increment performance counters. (Inherited from WebBaseEvent) |
MemberwiseClone() |
Creates a shallow copy of the current Object. (Inherited from Object) |
Raise() |
Raises an event by notifying any configured provider that the event has occurred. (Inherited from WebBaseEvent) |
ToString() |
Formats event information for display purposes. (Inherited from WebBaseEvent) |
ToString(Boolean, Boolean) |
Formats event information for display purposes. (Inherited from WebBaseEvent) |