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WebBaseEventCollection Class

Contains a collection of WebBaseEvent objects. This class cannot be inherited.

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

<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level := AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class WebBaseEventCollection _
	Inherits ReadOnlyCollectionBase
Dim instance As WebBaseEventCollection

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 WebBaseEventCollection class is used to deliver a collection of health-monitoring events to providers such as the SqlWebEventProvider.

The following code example shows how to use the WebBaseEventCollection class.

Imports System
Imports System.Text
Imports System.Web
Imports System.Web.Management
Imports System.Collections

' Implements a custom WebBaseEvent class.  
' Everytime this class is instantiated a WebBaseEvent is  
' created. This event object is then added to the static  
' simulatedEvents array list. 

Public Class SampleWebBaseEventCollection
    Inherits System.Web.Management.WebBaseEvent
    Private customCreatedMsg As String 

    Private Shared simulatedEvents As New ArrayList()
    Private Shared events _
    As System.Web.Management.WebBaseEventCollection

    ' Create a new WebBaseEvent and add it to the  
    ' static array list simulatedEvents. 
    Public Sub New(ByVal msg As String, ByVal eventSource As Object, _
    ByVal eventCode As Integer)
        MyBase.New(msg, eventSource, eventCode)

        customCreatedMsg = String.Format("Event created at: {0}", _


    End Sub 'New 

    ' Get the event with the specified index. 
    Public Shared Function GetItem(ByVal index _
    As Integer) As WebBaseEvent
        Return events(index)

    End Function 'GetItem

    ' Get the index of the specified event. 
    Public Shared Function GetIndexOf(ByVal ev _
    As WebBaseEvent) As Integer 
        Return events.IndexOf(ev)

    End Function 'GetIndexOf

    ' Chek if the specified event is in the collection. 
    Public Shared Function ContainsEvent(ByVal ev _
    As WebBaseEvent) As Boolean 
        Return events.Contains(ev)

    End Function 'ContainsEvent

    ' Create an event collection. 
    ' Add to it the created simulatedEvents. 
    Public Shared Sub AddEvents() 
        events = _
        New System.Web.Management.WebBaseEventCollection(simulatedEvents)

    End Sub 'AddEvents

    ' Display the events contained in the collection. 
    Public Overrides Sub FormatCustomEventDetails(ByVal formatter _
    As WebEventFormatter)
        ' Add custom data.

        formatter.IndentationLevel += 1
        formatter.AppendLine("**SampleWebBaseEventCollection Data Start **")
        Dim ev As WebBaseEvent
        For Each ev In events
            formatter.AppendLine(String.Format("Message:   {0}", _
            formatter.AppendLine(String.Format("Source:    {0}", _
            formatter.AppendLine(String.Format("Code:      {0}", _
        Next ev

        formatter.AppendLine("**SampleWebBaseEventCollection Data End **")

        formatter.IndentationLevel -= 1

    End Sub 'FormatCustomEventDetails 
End Class 'SampleWebBaseEventCollection


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