Timer Timer Timer Timer Constructors

定義

オーバーロード

Timer() Timer() Timer()

Timer クラスの新しいインスタンスを初期化し、すべてのプロパティを初期値に設定します。Initializes a new instance of the Timer class, and sets all the properties to their initial values.

Timer(Double) Timer(Double) Timer(Double) Timer(Double)

Timer クラスの新しいインスタンスを初期化し、Interval プロパティを指定したミリ秒数に設定します。Initializes a new instance of the Timer class, and sets the Interval property to the specified number of milliseconds.

Timer() Timer() Timer()

Timer クラスの新しいインスタンスを初期化し、すべてのプロパティを初期値に設定します。Initializes a new instance of the Timer class, and sets all the properties to their initial values.

public:
 Timer();
public Timer ();
Public Sub New ()

次の例ではTimer 、2秒 ( Timer.Elapsed 2000 ミリ秒) ごとにイベントを発生させるオブジェクトをインスタンス化し、イベントのイベントハンドラーを設定して、タイマーを開始します。The following example instantiates a Timer object that fires its Timer.Elapsed event every two seconds (2000 milliseconds), sets up an event handler for the event, and starts the timer. イベントハンドラーは、発生するたびにElapsedEventArgs.SignalTimeプロパティの値を表示します。The event handler displays the value of the ElapsedEventArgs.SignalTime property each time it is raised.

using namespace System;
using namespace System::Timers;

public ref class Example
{
private:
    static System::Timers::Timer^ aTimer;

public:
    static void Demo()
    {
        // Create a timer and set a two second interval.
        aTimer = gcnew System::Timers::Timer();
        aTimer->Interval = 2000;

        // Hook up the Elapsed event for the timer. 
        aTimer->Elapsed += gcnew System::Timers::ElapsedEventHandler(Example::OnTimedEvent);

        // Have the timer fire repeated events (true is the default)
        aTimer->AutoReset = true;

        // Start the timer
        aTimer->Enabled = true;

        Console::WriteLine("Press the Enter key to exit the program at any time... ");
        Console::ReadLine();
    }

private:
    static void OnTimedEvent(Object^ source, System::Timers::ElapsedEventArgs^ e)
    {
        Console::WriteLine("The Elapsed event was raised at {0}", e->SignalTime);
    }
};

int main()
{
    Example::Demo();
}
// The example displays output like the following: 
//       Press the Enter key to exit the program at any time... 
//       The Elapsed event was raised at 5/20/2015 8:48:58 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:00 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:02 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:04 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:06 PM 

using System;
using System.Timers;

public class Example
{
    private static Timer aTimer;

    public static void Main()
    {
        // Create a timer and set a two second interval.
        aTimer = new System.Timers.Timer();
        aTimer.Interval = 2000;

        // Hook up the Elapsed event for the timer. 
        aTimer.Elapsed += OnTimedEvent;

        // Have the timer fire repeated events (true is the default)
        aTimer.AutoReset = true;

        // Start the timer
        aTimer.Enabled = true;

        Console.WriteLine("Press the Enter key to exit the program at any time... ");
        Console.ReadLine();
    }

    private static void OnTimedEvent(Object source, System.Timers.ElapsedEventArgs e)
    {
        Console.WriteLine("The Elapsed event was raised at {0}", e.SignalTime);
    }
}
// The example displays output like the following: 
//       Press the Enter key to exit the program at any time... 
//       The Elapsed event was raised at 5/20/2015 8:48:58 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:00 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:02 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:04 PM 
//       The Elapsed event was raised at 5/20/2015 8:49:06 PM 
Imports System.Timers

Public Module Example
    Private aTimer As Timer

    Public Sub Main()
        ' Create a timer and set a two second interval.
        aTimer = New System.Timers.Timer()
        aTimer.Interval = 2000

        ' Hook up the Elapsed event for the timer.  
        AddHandler aTimer.Elapsed, AddressOf OnTimedEvent

        ' Have the timer fire repeated events (true is the default)
        aTimer.AutoReset = True

        ' Start the timer
        aTimer.Enabled = True

        Console.WriteLine("Press the Enter key to exit the program at any time... ")
        Console.ReadLine()
    End Sub

    Private Sub OnTimedEvent(source As Object, e As System.Timers.ElapsedEventArgs)
        Console.WriteLine("The Elapsed event was raised at {0}", e.SignalTime)
    End Sub
End Module
' The example displays output like the following: 
'       Press the Enter key to exit the program at any time... 
'       The Elapsed event was raised at 5/20/2015 8:48:58 PM 
'       The Elapsed event was raised at 5/20/2015 8:49:00 PM 
'       The Elapsed event was raised at 5/20/2015 8:49:02 PM 
'       The Elapsed event was raised at 5/20/2015 8:49:04 PM 
'       The Elapsed event was raised at 5/20/2015 8:49:06 PM 

注釈

次の表に、のTimerインスタンスのプロパティの初期値を示します。The following table shows initial property values for an instance of Timer.

プロパティProperty 初期値Initial value
AutoReset true
Enabled false
Interval 100ミリ秒100 milliseconds
SynchronizingObject null 参照 (Visual Basic の場合は Nothing)。A null reference (Nothing in Visual Basic).
こちらもご覧ください

Timer(Double) Timer(Double) Timer(Double) Timer(Double)

Timer クラスの新しいインスタンスを初期化し、Interval プロパティを指定したミリ秒数に設定します。Initializes a new instance of the Timer class, and sets the Interval property to the specified number of milliseconds.

public:
 Timer(double interval);
public Timer (double interval);
new System.Timers.Timer : double -> System.Timers.Timer
Public Sub New (interval As Double)

パラメーター

interval
Double Double Double Double

ミリ秒単位でのイベントの発生間隔。The time, in milliseconds, between events. この値はゼロより大きく、MaxValue 以下である必要があります。The value must be greater than zero and less than or equal to MaxValue.

例外

interval パラメーターの値は 0 以下か、または MaxValue を超えています。The value of the interval parameter is less than or equal to zero, or greater than MaxValue.

次の例ではTimer 、2秒 ( Timer.Elapsed 2000 ミリ秒) ごとにイベントを発生させるオブジェクトをインスタンス化し、イベントのイベントハンドラーを設定して、タイマーを開始します。The following example instantiates a Timer object that fires its Timer.Elapsed event every two seconds (2000 milliseconds), sets up an event handler for the event, and starts the timer. イベントハンドラーは、発生するたびにElapsedEventArgs.SignalTimeプロパティの値を表示します。The event handler displays the value of the ElapsedEventArgs.SignalTime property each time it is raised.

using System;
using System.Threading.Tasks;
using System.Timers;

class Example
{
   static void Main()
   {
      Timer timer = new Timer(1000);
      timer.Elapsed += async ( sender, e ) => await HandleTimer();
      timer.Start();
      Console.Write("Press any key to exit... ");
      Console.ReadKey();
   }

   private static Task HandleTimer()
   {
     Console.WriteLine("\nHandler not implemented..." );
     throw new NotImplementedException();
   }
}
// The example displays output like the following:
//   Press any key to exit...
//   Handler not implemented...
//   
//   Unhandled Exception: System.NotImplementedException: The method or operation is not implemented.
//      at Example.HandleTimer()
//      at Example.<<Main>b__0>d__2.MoveNext()
//   --- End of stack trace from previous location where exception was thrown ---
//      at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c__DisplayClass2.<ThrowAsync>b__5(Object state)
//      at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
//      at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
//      at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
//      at System.Threading.ThreadPoolWorkQueue.Dispatch()
Imports System.Threading.Tasks
Imports System.Timers

Public Module Example
   Public Sub Main()
      Dim timer As New Timer(1000)  
      AddHandler timer.Elapsed, AddressOf Example.HandleTimer     
      'timer.Elapsed = Async ( sender, e ) => await HandleTimer()
      timer.Start()
      Console.Write("Press any key to exit... ")
      Console.ReadKey()
   End Sub

   Private Async Sub HandleTimer(sender As Object, e As EventArgs)
      Await Task.Run(Sub()
                        Console.WriteLine()
                        Console.WriteLine("Handler not implemented..." )
                        Throw New NotImplementedException()
                     End Sub)   
   End Sub
End Module
' The example displays output like the following:
'   Press any key to exit...
'   Handler not implemented...
'   
'   Unhandled Exception: System.NotImplementedException: The method or operation is not implemented.
'      at Example._Lambda$__1()
'      at System.Threading.Tasks.Task.Execute()
'   --- End of stack trace from previous location where exception was thrown ---
'      at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
'      at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
'      at Example.VB$StateMachine_0_HandleTimer.MoveNext()
'   --- End of stack trace from previous location where exception was thrown ---
'      at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<>c__DisplayClass2.<ThrowAsync>b__5(Object state)
'      at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
'      at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
'      at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
'      at System.Threading.ThreadPoolWorkQueue.Dispatch()

注釈

このコンストラクターは、 Interval新しいタイマーインスタンスのプロパティを設定しますが、タイマーを有効にしません。This constructor sets the Interval property of the new timer instance, but does not enable the timer.

こちらもご覧ください

適用対象