EventLogEntry.Source 屬性

定義

命名空間:

System.Diagnostics

組件:

System.Diagnostics.EventLog.dll

來源:

EventLogEntry.cs

取得產生此事件的應用程式名稱。

public:
 property System::String ^ Source { System::String ^ get(); };

public string Source { get; }

member this.Source : string

Public ReadOnly Property Source As String

屬性值

String

該名稱登記在事件日誌中，作為此事件的來源。

範例

以下程式碼範例示範了該 Source 屬性的使用方式。 在此範例中，一個 switch 語句使用主控台輸入來搜尋指定 EntryType事件日誌的條目。 若找到匹配， Source 屬性資訊會顯示在主控台上。

using System;
using System.Diagnostics;
   class MyEventlogClass
   {
      public static void Main()
      {
         String myEventType=null;
         // Associate the instance of 'EventLog' with local System Log.
         EventLog myEventLog = new EventLog("System", ".");
         Console.WriteLine("1:Error");
         Console.WriteLine("2:Information");
         Console.WriteLine("3:Warning");
         Console.WriteLine("Select the Event Type");
         int myOption=Convert.ToInt32(Console.ReadLine());
         switch(myOption)
         {
            case 1:  myEventType="Error";
                     break;
            case 2:  myEventType="Information";
                     break;
            case 3:  myEventType="Warning";
                     break;
            default: break;
         }

            EventLogEntryCollection myLogEntryCollection=myEventLog.Entries;
            int myCount =myLogEntryCollection.Count;
            // Iterate through all 'EventLogEntry' instances in 'EventLog'.
            for(int i=myCount-1;i>-1;i--)
            {
               EventLogEntry myLogEntry = myLogEntryCollection[i];
               // Select the entry having desired EventType.
               if(myLogEntry.EntryType.ToString().Equals(myEventType))
               {
                  // Display Source of the event.
                  Console.WriteLine(myLogEntry.Source
                     +" was the source of last event of type "
                     +myLogEntry.EntryType);
                  return;
               }
            }
         }
   }

Imports System.Diagnostics

Class MyEventlogClass
   Public Shared Sub Main()
      Dim myEventType As String = Nothing
      ' Associate the instance of 'EventLog' with local System Log.
      Dim myEventLog As New EventLog("System", ".")
      Console.WriteLine("1:Error")
      Console.WriteLine("2:Information")
      Console.WriteLine("3:Warning")
      Console.WriteLine("Select the Event Type")
      Dim myOption As Integer = Convert.ToInt32(Console.ReadLine())
      Select Case myOption
         Case 1
            myEventType = "Error"
         Case 2
            myEventType = "Information"
         Case 3
            myEventType = "Warning"
         Case Else
      End Select

      Dim myLogEntryCollection As EventLogEntryCollection = myEventLog.Entries
      Dim myCount As Integer = myLogEntryCollection.Count
      ' Iterate through all 'EventLogEntry' instances in 'EventLog'.
      Dim i As Integer
      For i = myCount - 1 To 0 Step -1
         Dim myLogEntry As EventLogEntry = myLogEntryCollection(i)
         ' Select the entry having desired EventType.
         If myLogEntry.EntryType.ToString().Equals(myEventType) Then
            ' Display Source of the event.
            Console.WriteLine(myLogEntry.Source + " was the source of last "& _
                             "event of type " & myLogEntry.EntryType.ToString())
            Return
         End If
      Next 
   End Sub
End Class

備註

事件來源會顯示記錄事件的是什麼。 如果應用程式很大，通常是應用程式的名稱或應用程式的子元件名稱。 應用程式與服務通常會寫入（因此是）應用程式日誌或自訂日誌的來源。 裝置驅動程式通常會寫入系統日誌。

另請參閱

• Source