WebManagementEvent 類別

定義

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

繼承

Object

WebBaseEvent

WebManagementEvent

衍生

System.Web.Management.WebApplicationLifetimeEvent

System.Web.Management.WebAuditEvent

System.Web.Management.WebBaseErrorEvent

System.Web.Management.WebHeartbeatEvent

System.Web.Management.WebRequestEvent

範例

以下範例展示了如何從類別衍生 WebManagementEvent 出自訂事件來實作。

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

以下是讓 ASP.NET 能使用自訂事件的設定檔摘錄。

<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>

備註

ASP.NET 健康監控讓生產與營運人員能管理已部署的網頁應用程式。 System.Web.Management命名空間包含負責包裝應用程式健康狀態資料的健康事件類型，以及負責處理這些資料的提供者類型。 同時也包含協助健康事件管理的支援類型。

WebManagementEvent 是所有 ASP.NET 健康監控事件類型的基底類別。 它利用該 WebProcessInformation 類別取得其衍生類別可用的流程資訊。

給繼承者的注意事項

在格式化自訂事件資訊以供顯示時，請覆蓋方法本身 FormatCustomEventDetails(WebEventFormatter) ，而非方法本身 ToString 。 這樣可以避免覆蓋或竄改敏感系統資訊。

你為自訂事件指定的事件代碼必須大於 WebExtendedBase。

另請參閱

• WebAuditEvent
• ASP.NET 狀況監控 概觀