Timer.AutoReset プロパティ

定義

名前空間:

System.Timers

アセンブリ:

System.ComponentModel.TypeConverter.dll

ソース:

Timer.cs

Timer が Elapsed イベントを一度のみ発生させる (false) か、または繰り返し発生させる (true) かを示すブール値を取得または設定します。

public:
 property bool AutoReset { bool get(); void set(bool value); };

public bool AutoReset { get; set; }

member this.AutoReset : bool with get, set

Public Property AutoReset As Boolean

プロパティ値

Boolean

指定した間隔が経過するたびに Timer で Elapsed イベントを発生させる場合は true。最初の間隔が経過した後に 1 回だけ false イベントを発生させる場合は Elapsed。 既定値は、true です。

例

次の例では、 TimerElapsed 1.5 秒後にイベントが発生する を作成します。 そのイベント ハンドラーは、コンソールに "Hello World!" と表示されます。

#using <system.dll>

using namespace System;
using namespace System::Timers;

public ref class Timer2
{
private: 
   static System::Timers::Timer^ aTimer;

public:
   static void Main()
   {
      // Create a new Timer with Interval set to 1.5 seconds.
      double interval = 1500.0;
      aTimer = gcnew System::Timers::Timer(interval);

      // Hook up the event handler for the Elapsed event.
      aTimer->Elapsed += gcnew ElapsedEventHandler( OnTimedEvent );
      
      // Only raise the event the first time Interval elapses.
      aTimer->AutoReset = false;
      aTimer->Enabled = true;

      // Ensure the event fires before the exit message appears.
      System::Threading::Thread::Sleep((int) interval * 2);
      Console::WriteLine("Press the Enter key to exit the program.");
      Console::ReadLine();

      // If the timer is declared in a long-running method, use
      // KeepAlive to prevent garbage collection from occurring
      // before the method ends.
      //GC::KeepAlive(aTimer);
   }

private:
   // Handle the Elapsed event.
   static void OnTimedEvent( Object^ /*source*/, ElapsedEventArgs^ /*e*/ )
   {
      Console::WriteLine( "Hello World!" );
   }

};

int main()
{
   Timer2::Main();
}
// The example displays the following output:
//       Hello World!
//       Press the Enter key to exit the program.

using System;
using System.Timers;

public class Example
{
    private static Timer aTimer;

    public static void Main()
    {
        // Create a timer with a 1.5 second interval.
        double interval = 1500.0;
        aTimer = new System.Timers.Timer(interval);

        // Hook up the event handler for the Elapsed event.
        aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);

        // Only raise the event the first time Interval elapses.
        aTimer.AutoReset = false;
        aTimer.Enabled = true;

        // Ensure the event fires before the exit message appears.
        System.Threading.Thread.Sleep((int) interval * 2);
        Console.WriteLine("Press the Enter key to exit the program.");
        Console.ReadLine();
    }

    // Handle the Elapsed event.
    private static void OnTimedEvent(object source, ElapsedEventArgs e)
    {
        Console.WriteLine("Hello World!");
    }
}
// This example displays the following output:
//       Hello World!
//       Press the Enter key to exit the program.

open System.Threading
open System.Timers

// Handle the Elapsed event.
let onTimedEvent source e =
    printfn "Hello World!"

// Create a timer with a 1.5 second interval.
let interval = 1500.
let aTimer = new Timer(interval)

// Hook up the event handler for the Elapsed event.
aTimer.Elapsed.AddHandler(ElapsedEventHandler onTimedEvent)

// Only raise the event the first time Interval elapses.
aTimer.AutoReset <- false
aTimer.Enabled <- true

// Ensure the event fires before the exit message appears.
Thread.Sleep(interval * 2. |> int)
printfn "Press the Enter key to exit the program."
stdin.ReadLine() |> ignore

// This example displays the following output:
//       Hello World!
//       Press the Enter key to exit the program.

Imports System.Timers

Public Module Example
    Private aTimer As System.Timers.Timer

    Public Sub Main()
        ' Create a timer with a 1.5 second interval.
        Dim interval As Double = 1500.0
        aTimer = New System.Timers.Timer(interval)

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

        ' Only raise the event the first time Interval elapses.
        aTimer.AutoReset = False
        aTimer.Enabled = True
        
        
        ' Ensure the event fires before the exit message appears.
        System.Threading.Thread.Sleep(CInt(interval * 2))
        Console.WriteLine("Press the Enter key to exit the program.")
        Console.ReadLine()

        ' If the timer is declared in a long-running method, use
        ' KeepAlive to prevent garbage collection from occurring
        ' before the method ends.
        'GC.KeepAlive(aTimer)
    End Sub

    ' Specify what you want to happen when the Elapsed event is 
    ' raised.
    Private Sub OnTimedEvent(source As Object, e As ElapsedEventArgs)
        Console.WriteLine("Hello World!")
    End Sub
End Module
' This example displays the following output:
'       Hello World!
'       Press the Enter key to exit the program.

注釈

が falseの場合AutoResetは、カウントをStart再度開始するために メソッドを呼び出す必要があります。

間隔をリセットすると、イベントが発生した場合に影響します Elapsed 。 たとえば、間隔を 5 秒に設定し、 プロパティを Enabled に true設定すると、カウントは設定時 Enabled に開始されます。 カウントが 3 秒のときに間隔を 10 秒にリセットすると、 Elapsed プロパティが にtrue設定された後Enabled、最初の 13 秒間イベントが発生します。

こちらもご覧ください

• Interval
• Enabled
• Start()
• Elapsed