Provides information about systemic errors.
Assembly: System.Web (in System.Web.dll)
Thetype exposes the following members.
|WebErrorEvent(String, Object, Int32, Exception)||Infrastructure. Initializes the class using the supplied parameters.|
|WebErrorEvent(String, Object, Int32, Int32, Exception)||Infrastructure. Initializes a new instance of the class using the supplied parameters.|
|ErrorException||Gets the Exception associated with the error (Inherited from WebBaseErrorEvent.)|
|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. (Inherited from WebManagementEvent.)|
|RequestInformation||Gets the application request information.|
|ThreadInformation||Gets the application-thread information.|
|Equals(Object)||Determines whether the specified Object is equal to the current Object. (Inherited from Object.)|
|Finalize||Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)|
|FormatCustomEventDetails||Provides standard formatting of the event information. (Inherited from WebBaseEvent.)|
|GetHashCode||Serves as a hash function for a particular type. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|IncrementPerfCounters||Infrastructure. Used internally to increment performance counters. (Overrides WebBaseErrorEvent.IncrementPerfCounters.)|
|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.)|
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 provides information about errors caused by problems with configuration or application code. An example is the error issued by ASP.NET when an error is found in a page.
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 class, see the example provided in this topic.
The following code example shows how to derive from the class to create a custom event.
Also shown is an excerpt of the configuration file that enables ASP.NET to use this custom event.
<healthMonitoring enabled="true" heartBeatInterval="0"> <eventMappings> <add name="SampleWebErrorEvent" type="SamplesAspNet.SampleWebErrorEvent,weberrorevent,Version=1.0.1573.21549, Culture=neutral, PublicKeyToken=2a0b23915ac7352b, processorArchitecture=MSIL"/> </eventMappings> <profiles> <add name="Custom" minInstances="1" maxLimit="Infinite" minInterval="00:00:00" /> </profiles> <rules> <clear /> <add name="Custom Web Error Event" eventName="SampleWebErrorEvent" provider="EventLogProvider" profile="Custom" /> </rules> </healthMonitoring>
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
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.