Thread.ThreadState プロパティ

定義

現在のスレッドの状態を示す値を取得します。Gets a value containing the states of the current thread.

public:
 property System::Threading::ThreadState ThreadState { System::Threading::ThreadState get(); };
public System.Threading.ThreadState ThreadState { get; }
member this.ThreadState : System.Threading.ThreadState
Public ReadOnly Property ThreadState As ThreadState

プロパティ値

現在のスレッドの状態を示す ThreadState 値の 1 つ。One of the ThreadState values indicating the state of the current thread. 初期値は Unstarted です。The initial value is Unstarted.

次のコード例は、スレッドの ThreadState にアクセスする方法を示しています。The following code example demonstrates accessing the ThreadState of a thread.

using namespace System;
using namespace System::Threading;

// ref class ApartmentTest
// {
// public:
   static void ThreadMethod()
   {
      Thread::Sleep( 1000 );
//    }

};

int main()
{
//    Thread^ newThread = gcnew Thread( gcnew ThreadStart( &ApartmentTest::ThreadMethod ) );
   Thread^ newThread = gcnew Thread( gcnew ThreadStart( &ThreadMethod ) );

   Console::WriteLine("ThreadState: {0}", newThread->ThreadState);
   newThread->Start();
   
   // Wait for newThread to start and go to sleep.
   Thread::Sleep(300);
   Console::WriteLine("ThreadState: {0}", newThread->ThreadState);

   // Wait for newThread to restart.
   Thread::Sleep(1000);
   Console::WriteLine("ThreadState: {0}", newThread->ThreadState);
}
// The example displays the following output:
//       ThreadState: Unstarted
//       ThreadState: WaitSleepJoin
//       ThreadState: Stopped
using System;
using System.Threading;

class Example
{
    static void Main()
    {
        Thread newThread = 
            new Thread(new ThreadStart(ThreadMethod));

        Console.WriteLine("ThreadState: {0}", newThread.ThreadState);
        newThread.Start();

        // Wait for newThread to start and go to sleep.
        Thread.Sleep(300);
        Console.WriteLine("ThreadState: {0}", newThread.ThreadState);
        
        // Wait for newThread to restart.
        Thread.Sleep(1000);
        Console.WriteLine("ThreadState: {0}", newThread.ThreadState);
    }

    static void ThreadMethod()
    {
        Thread.Sleep(1000);
    }
}
// The example displays the following output:
//       ThreadState: Unstarted
//       ThreadState: WaitSleepJoin
//       ThreadState: Stopped
Imports System.Threading

Public Module Example
    Public Sub Main()
        Dim newThread As Thread = New Thread(AddressOf ThreadMethod)

        Console.WriteLine("ThreadState: {0}", newThread.ThreadState)
        newThread.Start()

        ' Wait for newThread to start and go to sleep.
        Thread.Sleep(300)
        Console.WriteLine("ThreadState: {0}", newThread.ThreadState)

        ' Wait for newThread to restart.
        Thread.Sleep(1000)
        Console.WriteLine("ThreadState: {0}", newThread.ThreadState)
    End Sub

    Sub ThreadMethod()
        Thread.Sleep(1000)
    End Sub
End Module
' The example displays the following output:
'       ThreadState: Unstarted
'       ThreadState: WaitSleepJoin
'       ThreadState: Stopped

注釈

ThreadState プロパティは、IsAlive プロパティよりも具体的な情報を提供します。The ThreadState property provides more specific information than the IsAlive property.

重要

スレッドの状態は、デバッグシナリオでのみ重要です。Thread state is only of interest in debugging scenarios. スレッドの動作を同期化する目的でコード内でスレッドの状態を使用しないでください。Your code should never use thread state to synchronize the activities of threads.

適用対象