EventLogEntry.Source 属性
定义
获取生成该事件的应用程序的名称。Gets the name of the application that generated this event.
public:
property System::String ^ Source { System::String ^ get(); };
public string Source { get; }
member this.Source : string
Public ReadOnly Property Source As String
属性值
在事件日志中注册为该事件的源的名称。The name registered with the event log as the source of this event.
示例
下面的代码示例演示属性的用法 Source 。The following code example demonstrates the use of the Source property. 在此示例中, switch 语句使用控制台输入搜索指定的事件日志条目 EntryType 。In this example, a switch statement uses console input to search for event log entries for the specified EntryType. 如果找到匹配项,则 Source 会在控制台中显示属性信息。If a match is found, the Source property information is displayed at the console.
#using <System.dll>
using namespace System;
using namespace System::Diagnostics;
int main()
{
String^ myEventType = nullptr;
// Associate the instance of 'EventLog' with local System Log.
EventLog^ myEventLog = gcnew 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.Equals( myEventType ) )
{
// Display Source of the event.
Console::WriteLine( "{0} was the source of last event of type {1}", myLogEntry->Source, myLogEntry->EntryType );
return 0;
}
}
}
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
注解
事件源指示记录了哪些事件。The event source indicates what logged the event. 如果应用程序较大,则通常是应用程序的名称或应用程序的子组件的名称。It is often the name of the application or the name of a subcomponent of the application if the application is large. 应用程序和服务通常会写入到 (,因此它们是应用程序日志或自定义日志) 的源。Applications and services usually write to (and therefore are sources for) the Application log or a custom log. 设备驱动程序通常会写入系统日志。Device drivers usually write to the System log.