ManagementEventWatcher 생성자

정의

네임스페이스:: System.Management

어셈블리:: System.Management.dll

패키지:: System.Management v11.0.0-preview.4.26230.115

중요

일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.

ManagementEventWatcher 클래스의 새 인스턴스를 초기화합니다.

오버로드

Name	Description
ManagementEventWatcher()	ManagementEventWatcher 클래스의 새 인스턴스를 초기화합니다. 추가 초기화를 위해 개체의 속성을 설정합니다. 매개 변수가 없는 생성자입니다.
ManagementEventWatcher(EventQuery)	WMI ManagementEventWatcher가 제공되면 클래스의 새 인스턴스를 초기화합니다.
ManagementEventWatcher(String)	WMI ManagementEventWatcher를 문자열 형식으로 지정하면 클래스의 새 인스턴스를 초기화합니다.
ManagementEventWatcher(ManagementScope, EventQuery)	지정된 WMI ManagementEventWatcher를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다.
ManagementEventWatcher(String, String)	지정된 WMI ManagementEventWatcher를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다. 이 변형의 경우 쿼리와 범위가 문자열로 지정됩니다.
ManagementEventWatcher(ManagementScope, EventQuery, EventWatcherOptions)	지정된 옵션에 ManagementEventWatcher 따라 지정된 WMI 이벤트 쿼리를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다. 이 변형의 경우 쿼리와 범위가 지정된 개체입니다. options 개체는 제한 시간 및 컨텍스트 정보와 같은 옵션을 지정할 수 있습니다.
ManagementEventWatcher(String, String, EventWatcherOptions)	지정된 옵션에 ManagementEventWatcher 따라 지정된 WMI 이벤트 쿼리를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다. 이 변형의 경우 쿼리와 범위가 문자열로 지정됩니다. options 개체는 제한 시간 및 컨텍스트 정보와 같은 옵션을 지정할 수 있습니다.

ManagementEventWatcher()

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

ManagementEventWatcher 클래스의 새 인스턴스를 초기화합니다. 추가 초기화를 위해 개체의 속성을 설정합니다. 매개 변수가 없는 생성자입니다.

public:
 ManagementEventWatcher();

public ManagementEventWatcher();

Public Sub New ()

예제

다음 예제에서는 이벤트 클래스가 __InstanceCreationEvent 때문에 Win32_Process 인스턴스를 만들 때 클라이언트가 알림을 받는 방법을 보여 줍니다. 자세한 내용은 Windows Management Instrumentation 설명서를 참조하세요. 클라이언트는 메서드를 호출하여 이벤트를 동기적으로 수신합니다 WaitForNextEvent . 이 예제는 예제 코드가 실행되는 동안 메모장과 같은 프로세스를 시작하여 테스트할 수 있습니다.

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        WqlEventQuery query =
            new WqlEventQuery("__InstanceCreationEvent",
            new TimeSpan(0,0,1),
            "TargetInstance isa \"Win32_Process\"");

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher();
        watcher.Query = query;
        // times out watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = new TimeSpan(0,0,5);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As New WqlEventQuery( _
            "__InstanceCreationEvent", _
            New TimeSpan(0, 0, 1), _
            "TargetInstance isa ""Win32_Process""")

        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher
        watcher.Query = query
        ' times watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = New TimeSpan(0, 0, 5)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

.NET Framework 보안

즉시 호출자에 대한 완전 신뢰입니다. 이 멤버는 부분적으로 신뢰할 수 있는 코드에서 사용할 수 없습니다. 자세한 내용은 부분적으로 신뢰할 수 있는 코드의 라이브러리 사용을 참조하세요.

적용 대상

ManagementEventWatcher(EventQuery)

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

WMI ManagementEventWatcher가 제공되면 클래스의 새 인스턴스를 초기화합니다.

public:
 ManagementEventWatcher(System::Management::EventQuery ^ query);

public ManagementEventWatcher(System.Management.EventQuery query);

new System.Management.ManagementEventWatcher : System.Management.EventQuery -> System.Management.ManagementEventWatcher

Public Sub New (query As EventQuery)

매개 변수

query: EventQuery

EventQuery 감시자가 수신 대기할 이벤트를 결정하는 WMI 이벤트 쿼리를 나타냅니다.

예제

이 코드 예제에서 클라이언트는 이벤트 클래스가 __InstanceCreationEvent 때문에 Win32_Process 인스턴스를 만들 때 알림을 받습니다. 자세한 내용은 Windows Management Instrumentation 설명서를 참조하세요. 클라이언트는 메서드를 호출하여 이벤트를 동기적으로 수신합니다 WaitForNextEvent . 이 예제는 예제 코드가 실행되는 동안 메모장과 같은 프로세스를 시작하여 테스트할 수 있습니다.

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        string query =
            "SELECT * FROM __InstanceCreationEvent "
            + "WITHIN 1 WHERE " +
            "TargetInstance isa \"Win32_Process\"";

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher(new EventQuery(query));

        // times out watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = new TimeSpan(0,0,5);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As String
        query = "SELECT * FROM __InstanceCreationEvent " _
            & "WITHIN 1 WHERE " & _
            "TargetInstance isa ""Win32_Process"""

        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher(New EventQuery( _
        query))

        ' times watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = New TimeSpan(0, 0, 5)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

감시자가 이벤트를 수신 대기하는 네임스페이스는 현재 설정된 기본 네임스페이스입니다.

.NET Framework 보안

적용 대상

ManagementEventWatcher(String)

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

WMI ManagementEventWatcher를 문자열 형식으로 지정하면 클래스의 새 인스턴스를 초기화합니다.

public:
 ManagementEventWatcher(System::String ^ query);

public ManagementEventWatcher(string query);

new System.Management.ManagementEventWatcher : string -> System.Management.ManagementEventWatcher

Public Sub New (query As String)

매개 변수

query: String

감시자가 수신 대기할 이벤트를 정의하는 WMI 이벤트 쿼리입니다.

예제

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        string query =
            "SELECT * FROM __InstanceCreationEvent "
            + "WITHIN 1 WHERE " +
            "TargetInstance isa \"Win32_Process\"";

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher(query);

        // times out watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = new TimeSpan(0,0,5);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As String
        query = "SELECT * FROM __InstanceCreationEvent " _
            & "WITHIN 1 WHERE " & _
            "TargetInstance isa ""Win32_Process"""

        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher(query)

        ' times watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = New TimeSpan(0, 0, 5)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

감시자가 이벤트를 수신 대기하는 네임스페이스는 현재 설정된 기본 네임스페이스입니다.

.NET Framework 보안

적용 대상

ManagementEventWatcher(ManagementScope, EventQuery)

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

지정된 WMI ManagementEventWatcher를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다.

public:
 ManagementEventWatcher(System::Management::ManagementScope ^ scope, System::Management::EventQuery ^ query);

public ManagementEventWatcher(System.Management.ManagementScope scope, System.Management.EventQuery query);

new System.Management.ManagementEventWatcher : System.Management.ManagementScope * System.Management.EventQuery -> System.Management.ManagementEventWatcher

Public Sub New (scope As ManagementScope, query As EventQuery)

매개 변수

scope: ManagementScope

ManagementScope 감시자가 이벤트를 수신 대기할 범위(네임스페이스)를 나타내는 값입니다.

query: EventQuery

EventQuery 감시자가 수신 대기할 이벤트를 결정하는 WMI 이벤트 쿼리를 나타냅니다.

예제

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        string query =
            "SELECT * FROM __InstanceCreationEvent "
            + "WITHIN 1 WHERE " +
            "TargetInstance isa \"Win32_Process\"";

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher(
            new ManagementScope("root\\CIMV2"),
            new EventQuery(query));

        // times out watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = new TimeSpan(0,0,5);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As String
        query = "SELECT * FROM __InstanceCreationEvent " _
            & "WITHIN 1 WHERE " & _
            "TargetInstance isa ""Win32_Process"""

        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher( _
            New ManagementScope("root\CIMV2"), _
            New EventQuery(query))

        ' times watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = New TimeSpan(0, 0, 5)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

.NET Framework 보안

적용 대상

ManagementEventWatcher(String, String)

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

지정된 WMI ManagementEventWatcher를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다. 이 변형의 경우 쿼리와 범위가 문자열로 지정됩니다.

public:
 ManagementEventWatcher(System::String ^ scope, System::String ^ query);

public ManagementEventWatcher(string scope, string query);

new System.Management.ManagementEventWatcher : string * string -> System.Management.ManagementEventWatcher

Public Sub New (scope As String, query As String)

매개 변수

scope: String

감시자가 이벤트를 수신 대기하는 관리 범위(네임스페이스)입니다.

query: String

감시자가 수신 대기할 이벤트를 정의하는 쿼리입니다.

예제

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        string query =
            "SELECT * FROM __InstanceCreationEvent "
            + "WITHIN 1 WHERE " +
            "TargetInstance isa \"Win32_Process\"";

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher("root\\CIMV2",
            query);

        // times out watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = new TimeSpan(0,0,5);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As String
        query = "SELECT * FROM __InstanceCreationEvent " _
            & "WITHIN 1 WHERE " & _
            "TargetInstance isa ""Win32_Process"""

        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher( _
            "root\CIMV2", query)

        ' times watcher.WaitForNextEvent in 5 seconds
        watcher.Options.Timeout = New TimeSpan(0, 0, 5)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

.NET Framework 보안

적용 대상

ManagementEventWatcher(ManagementScope, EventQuery, EventWatcherOptions)

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

지정된 옵션에 ManagementEventWatcher 따라 지정된 WMI 이벤트 쿼리를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다. 이 변형의 경우 쿼리와 범위가 지정된 개체입니다. options 개체는 제한 시간 및 컨텍스트 정보와 같은 옵션을 지정할 수 있습니다.

public:
 ManagementEventWatcher(System::Management::ManagementScope ^ scope, System::Management::EventQuery ^ query, System::Management::EventWatcherOptions ^ options);

public ManagementEventWatcher(System.Management.ManagementScope scope, System.Management.EventQuery query, System.Management.EventWatcherOptions options);

new System.Management.ManagementEventWatcher : System.Management.ManagementScope * System.Management.EventQuery * System.Management.EventWatcherOptions -> System.Management.ManagementEventWatcher

Public Sub New (scope As ManagementScope, query As EventQuery, options As EventWatcherOptions)

매개 변수

scope: ManagementScope

ManagementScope 감시자가 이벤트를 수신 대기할 범위(네임스페이스)를 나타내는 값입니다.

query: EventQuery

EventQuery 감시자가 수신 대기할 이벤트를 결정하는 WMI 이벤트 쿼리를 나타냅니다.

options: EventWatcherOptions

EventWatcherOptions 이벤트를 감시하는 데 사용되는 추가 옵션을 나타냅니다.

예제

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        string query =
            "SELECT * FROM __InstanceCreationEvent "
            + "WITHIN 1 WHERE " +
            "TargetInstance isa \"Win32_Process\"";

        // Event options
        // blockSize = 1, so wait for 1 event to return
        EventWatcherOptions options = new EventWatcherOptions(
            null, TimeSpan.MaxValue, 1);

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher(
            new ManagementScope("root\\CIMV2"),
            new EventQuery(query), options);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As String
        query = "SELECT * FROM __InstanceCreationEvent " _
            & "WITHIN 1 WHERE " & _
            "TargetInstance isa ""Win32_Process"""

        ' Event options
        ' blockSize = 1, so wait for 1 event to return
        Dim options As New EventWatcherOptions( _
            Nothing, TimeSpan.MaxValue, 1)


        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher( _
            New ManagementScope("root\CIMV2"), _
            New EventQuery(query), _
            options)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

.NET Framework 보안

적용 대상

ManagementEventWatcher(String, String, EventWatcherOptions)

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

Source:: ManagementEventWatcher.cs

지정된 옵션에 ManagementEventWatcher 따라 지정된 WMI 이벤트 쿼리를 따르는 이벤트를 수신 대기하는 클래스의 새 인스턴스를 초기화합니다. 이 변형의 경우 쿼리와 범위가 문자열로 지정됩니다. options 개체는 제한 시간 및 컨텍스트 정보와 같은 옵션을 지정할 수 있습니다.

public:
 ManagementEventWatcher(System::String ^ scope, System::String ^ query, System::Management::EventWatcherOptions ^ options);

public ManagementEventWatcher(string scope, string query, System.Management.EventWatcherOptions options);

new System.Management.ManagementEventWatcher : string * string * System.Management.EventWatcherOptions -> System.Management.ManagementEventWatcher

Public Sub New (scope As String, query As String, options As EventWatcherOptions)

매개 변수

scope: String

감시자가 이벤트를 수신 대기하는 관리 범위(네임스페이스)입니다.

query: String

감시자가 수신 대기할 이벤트를 정의하는 쿼리입니다.

options: EventWatcherOptions

EventWatcherOptions 이벤트를 감시하는 데 사용되는 추가 옵션을 나타냅니다.

예제

using System;
using System.Management;

// This example shows synchronous consumption of events.
// The client is blocked while waiting for events.

public class EventWatcherPolling
{
    public static int Main(string[] args)
    {
        // Create event query to be notified within 1 second of
        // a change in a service
        string query =
            "SELECT * FROM __InstanceCreationEvent "
            + "WITHIN 1 WHERE " +
            "TargetInstance isa \"Win32_Process\"";

        // Event options
        // blockSize = 1, so wait for 1 event to return
        EventWatcherOptions options = new EventWatcherOptions(
            null, TimeSpan.MaxValue, 1);

        // Initialize an event watcher and subscribe to events
        // that match this query
        ManagementEventWatcher watcher =
            new ManagementEventWatcher(
            new ManagementScope("root\\CIMV2"),
            new EventQuery(query), options);

        // Block until the next event occurs
        // Note: this can be done in a loop if waiting for
        //        more than one occurrence
        Console.WriteLine(
            "Open an application (notepad.exe) to trigger an event.");
        ManagementBaseObject e = watcher.WaitForNextEvent();

        //Display information from the event
        Console.WriteLine(
            "Process {0} has been created, path is: {1}",
            ((ManagementBaseObject)e
            ["TargetInstance"])["Name"],
            ((ManagementBaseObject)e
            ["TargetInstance"])["ExecutablePath"]);

        //Cancel the subscription
        watcher.Stop();
        return 0;
    }
}

Imports System.Management

' This example shows synchronous consumption of events. 
' The client is blocked while waiting for events. 

Public Class EventWatcherPolling
    Public Overloads Shared Function _
        Main(ByVal args() As String) As Integer

        ' Create event query to be notified within 1 second of 
        ' a change in a service
        Dim query As String
        query = "SELECT * FROM __InstanceCreationEvent " _
            & "WITHIN 1 WHERE " & _
            "TargetInstance isa ""Win32_Process"""

        ' Event options
        ' blockSize = 1, so wait for 1 event to return
        Dim options As New EventWatcherOptions( _
            Nothing, TimeSpan.MaxValue, 1)


        ' Initialize an event watcher and subscribe to events 
        ' that match this query
        Dim watcher As New ManagementEventWatcher( _
            "root\CIMV2", _
            query, _
            options)

        ' Block until the next event occurs 
        ' Note: this can be done in a loop
        ' if waiting for more than one occurrence
        Console.WriteLine( _
          "Open an application (notepad.exe) to trigger an event.")
        Dim e As ManagementBaseObject = _
            watcher.WaitForNextEvent()

        'Display information from the event
        Console.WriteLine( _
            "Process {0} has created, path is: {1}", _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("Name"), _
            CType(e("TargetInstance"), _
                ManagementBaseObject)("ExecutablePath"))

        'Cancel the subscription
        watcher.Stop()
        Return 0

    End Function 'Main
End Class

설명

.NET Framework 보안

적용 대상

피드백

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