EventWatcherOptions 생성자

정의

네임스페이스:: System.Management

어셈블리:: System.Management.dll

패키지:: System.Management v11.0.0-preview.5.26302.115

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.

이벤트 감시를 위해 클래스의 새 인스턴스를 EventWatcherOptions 초기화합니다.

오버로드

Name	Description
EventWatcherOptions()	기본값을 사용하여 이벤트 감시에 EventWatcherOptions 대한 클래스의 새 인스턴스를 초기화합니다. 매개 변수가 없는 생성자입니다.
EventWatcherOptions(ManagementNamedValueCollection, TimeSpan, Int32)	지정된 값을 사용하여 클래스의 EventWatcherOptions 새 인스턴스를 초기화합니다.

EventWatcherOptions()

Source:: ManagementOptions.cs

Source:: ManagementOptions.cs

Source:: ManagementOptions.cs

Source:: ManagementOptions.cs

기본값을 사용하여 이벤트 감시에 EventWatcherOptions 대한 클래스의 새 인스턴스를 초기화합니다. 매개 변수가 없는 생성자입니다.

public:
 EventWatcherOptions();

public EventWatcherOptions();

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
        string query = "SELECT * FROM" +
            " __InstanceCreationEvent WITHIN 1 " +
            "WHERE TargetInstance isa \"Win32_Process\"";

        // Event options
        EventWatcherOptions eventOptions = new
            EventWatcherOptions();
        eventOptions.Timeout = System.TimeSpan.MaxValue;

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

        // 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
        Dim eventOptions As New EventWatcherOptions
        eventOptions.Timeout = System.TimeSpan.MaxValue

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

        ' 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

EventWatcherOptions(ManagementNamedValueCollection, TimeSpan, Int32)

Source:: ManagementOptions.cs

Source:: ManagementOptions.cs

Source:: ManagementOptions.cs

Source:: ManagementOptions.cs

지정된 값을 사용하여 클래스의 EventWatcherOptions 새 인스턴스를 초기화합니다.

public:
 EventWatcherOptions(System::Management::ManagementNamedValueCollection ^ context, TimeSpan timeout, int blockSize);

public EventWatcherOptions(System.Management.ManagementNamedValueCollection context, TimeSpan timeout, int blockSize);

new System.Management.EventWatcherOptions : System.Management.ManagementNamedValueCollection * TimeSpan * int -> System.Management.EventWatcherOptions

Public Sub New (context As ManagementNamedValueCollection, timeout As TimeSpan, blockSize As Integer)

매개 변수

context: ManagementNamedValueCollection

공급자에 전달할 공급자별 정보를 포함하는 옵션 컨텍스트 개체입니다.

timeout: TimeSpan

다음 이벤트를 기다리는 시간 제한입니다.

blockSize: Int32

각 블록에서 대기할 이벤트 수입니다.

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 to receive one event
        EventWatcherOptions eventOptions = new
            EventWatcherOptions(null, System.TimeSpan.MaxValue,
            1);

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

        // 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 to receive one event
        Dim eventOptions As New EventWatcherOptions( _
            Nothing, System.TimeSpan.MaxValue, 1)

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

        ' 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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