AsyncResult AsyncResult AsyncResult AsyncResult Class

定義

デリゲートでの非同期操作の結果をカプセル化します。Encapsulates the results of an asynchronous operation on a delegate.

public ref class AsyncResult : IAsyncResult, System::Runtime::Remoting::Messaging::IMessageSink
[System.Runtime.InteropServices.ComVisible(true)]
public class AsyncResult : IAsyncResult, System.Runtime.Remoting.Messaging.IMessageSink
type AsyncResult = class
    interface IAsyncResult
    interface IMessageSink
Public Class AsyncResult
Implements IAsyncResult, IMessageSink
継承
AsyncResultAsyncResultAsyncResultAsyncResult
属性
実装

次の例は、 AsyncWaitHandleプロパティを使用してをWaitHandle取得する方法と、デリゲートに対する非同期呼び出しを待機する方法を示しています。The following example demonstrates how to use the AsyncWaitHandle property to get a WaitHandle, and how to wait for an asynchronous call on a delegate. WaitHandle は非同期呼び出しが完了すると通知され、 WaitOne メソッドを呼び出すことによってこれを待機できます。The WaitHandle is signaled when the asynchronous call completes, and you can wait for it by calling the WaitOne method.

この例は、2つのクラス、非同期に呼び出されるメソッドを含むクラス、および呼び出しを行うMainメソッドを含むクラスで構成されています。The example consists of two classes, the class that contains the method which is called asynchronously, and the class that contains the Main method that makes the call.

デリゲートを使用した非同期メソッドの呼び出しの詳細と例については、「同期メソッドの非同期呼び出し」を参照してください。For more information and more examples of calling methods asynchronously by using delegates, see Calling Synchronous Methods Asynchronously.

using namespace System;
using namespace System::Threading;
using namespace System::Runtime::InteropServices; 

namespace Examples {
namespace AdvancedProgramming {
namespace AsynchronousOperations
{
    public ref class AsyncDemo 
    {
    public:
        // The method to be executed asynchronously.
        String^ TestMethod(int callDuration, [OutAttribute] int% threadId) 
        {
            Console::WriteLine("Test method begins.");
            Thread::Sleep(callDuration);
            threadId = Thread::CurrentThread->ManagedThreadId;
            return String::Format("My call time was {0}.", callDuration);
        }
    };

    // The delegate must have the same signature as the method
    // it will call asynchronously.
    public delegate String^ AsyncMethodCaller(int callDuration, [OutAttribute] int% threadId);
}}}
using System;
using System.Threading; 

namespace Examples.AdvancedProgramming.AsynchronousOperations
{
    public class AsyncDemo 
    {
        // The method to be executed asynchronously.
        public string TestMethod(int callDuration, out int threadId) 
        {
            Console.WriteLine("Test method begins.");
            Thread.Sleep(callDuration);
            threadId = Thread.CurrentThread.ManagedThreadId;
            return String.Format("My call time was {0}.", callDuration.ToString());
        }
    }
    // The delegate must have the same signature as the method
    // it will call asynchronously.
    public delegate string AsyncMethodCaller(int callDuration, out int threadId);
}
Imports System.Threading
Imports System.Runtime.InteropServices 

Namespace Examples.AdvancedProgramming.AsynchronousOperations
    Public Class AsyncDemo 
        ' The method to be executed asynchronously.
        Public Function TestMethod(ByVal callDuration As Integer, _
                <Out> ByRef threadId As Integer) As String
            Console.WriteLine("Test method begins.")
            Thread.Sleep(callDuration)
            threadId = Thread.CurrentThread.ManagedThreadId()
            return String.Format("My call time was {0}.", callDuration.ToString())
        End Function
    End Class

    ' The delegate must have the same signature as the method
    ' it will call asynchronously.
    Public Delegate Function AsyncMethodCaller(ByVal callDuration As Integer, _
        <Out> ByRef threadId As Integer) As String
End Namespace
#using <TestMethod.dll>

using namespace System;
using namespace System::Threading;
using namespace Examples::AdvancedProgramming::AsynchronousOperations;

void main() 
{
    // The asynchronous method puts the thread id here.
    int threadId;

    // Create an instance of the test class.
    AsyncDemo^ ad = gcnew AsyncDemo();

    // Create the delegate.
    AsyncMethodCaller^ caller = gcnew AsyncMethodCaller(ad, &AsyncDemo::TestMethod);
       
    // Initiate the asychronous call.
    IAsyncResult^ result = caller->BeginInvoke(3000, 
        threadId, nullptr, nullptr);

    Thread::Sleep(0);
    Console::WriteLine("Main thread {0} does some work.",
        Thread::CurrentThread->ManagedThreadId);

    // Wait for the WaitHandle to become signaled.
    result->AsyncWaitHandle->WaitOne();

    // Perform additional processing here.
    // Call EndInvoke to retrieve the results.
    String^ returnValue = caller->EndInvoke(threadId, result);

    // Close the wait handle.
    result->AsyncWaitHandle->Close();

    Console::WriteLine("The call executed on thread {0}, with return value \"{1}\".",
        threadId, returnValue);
}

/* This example produces output similar to the following:

Main thread 1 does some work.
Test method begins.
The call executed on thread 3, with return value "My call time was 3000.".
 */
using System;
using System.Threading;

namespace Examples.AdvancedProgramming.AsynchronousOperations
{
    public class AsyncMain 
    {
        static void Main() 
        {
            // The asynchronous method puts the thread id here.
            int threadId;

            // Create an instance of the test class.
            AsyncDemo ad = new AsyncDemo();

            // Create the delegate.
            AsyncMethodCaller caller = new AsyncMethodCaller(ad.TestMethod);
       
            // Initiate the asychronous call.
            IAsyncResult result = caller.BeginInvoke(3000, 
                out threadId, null, null);

            Thread.Sleep(0);
            Console.WriteLine("Main thread {0} does some work.",
                Thread.CurrentThread.ManagedThreadId);

            // Wait for the WaitHandle to become signaled.
            result.AsyncWaitHandle.WaitOne();

            // Perform additional processing here.
            // Call EndInvoke to retrieve the results.
            string returnValue = caller.EndInvoke(out threadId, result);

            // Close the wait handle.
            result.AsyncWaitHandle.Close();

            Console.WriteLine("The call executed on thread {0}, with return value \"{1}\".",
                threadId, returnValue);
        }
    }
}

/* This example produces output similar to the following:

Main thread 1 does some work.
Test method begins.
The call executed on thread 3, with return value "My call time was 3000.".
 */
Imports System.Threading
Imports System.Runtime.InteropServices 

Namespace Examples.AdvancedProgramming.AsynchronousOperations

    Public Class AsyncMain 
        Shared Sub Main() 
            ' The asynchronous method puts the thread id here.
            Dim threadId As Integer

            ' Create an instance of the test class.
            Dim ad As New AsyncDemo()

            ' Create the delegate.
            Dim caller As New AsyncMethodCaller(AddressOf ad.TestMethod)
       
            ' Initiate the asynchronous call.
            Dim result As IAsyncResult = caller.BeginInvoke(3000, _
                threadId, Nothing, Nothing)

            Thread.Sleep(0)
            Console.WriteLine("Main thread {0} does some work.", _
                Thread.CurrentThread.ManagedThreadId)
            ' Perform additional processing here and then
            ' wait for the WaitHandle to be signaled.
            result.AsyncWaitHandle.WaitOne()

            ' Call EndInvoke to retrieve the results.
            Dim returnValue As String = caller.EndInvoke(threadId, result)

            ' Close the wait handle.
            result.AsyncWaitHandle.Close()

            Console.WriteLine("The call executed on thread {0}, with return value ""{1}"".", _
                threadId, returnValue)
        End Sub
    End Class
End Namespace

'This example produces output similar to the following:
'
'Main thread 1 does some work.
'Test method begins.
'The call executed on thread 3, with return value "My call time was 3000.".

注釈

クラスAsyncResultは、デリゲートを使用して行われる非同期メソッド呼び出しと共に使用されます。The AsyncResult class is used in conjunction with asynchronous method calls made using delegates. デリゲートIAsyncResultBeginInvokeメソッドから返されたは、にキャストAsyncResultできます。The IAsyncResult returned from the delegate's BeginInvoke method can be cast to an AsyncResult. AsyncResult は、非同期呼び出しが呼び出されたデリゲートオブジェクトを保持するプロパティAsyncDelegateがあります。The AsyncResult has the AsyncDelegate property that holds the delegate object on which the asynchronous call was invoked.

デリゲートを使用しBeginInvokeたおよび非同期呼び出しの詳細については、「デリゲートを使用した非同期プログラミング」を参照してください。For more information about BeginInvoke and asynchronous calls using delegates, see Asynchronous Programming Using Delegates.

プロパティ

AsyncDelegate AsyncDelegate AsyncDelegate AsyncDelegate

非同期の呼び出しが行われたデリゲート オブジェクトを取得します。Gets the delegate object on which the asynchronous call was invoked.

AsyncState AsyncState AsyncState AsyncState

BeginInvoke メソッドの呼び出しの最後のパラメーターに指定されたオブジェクトを取得します。Gets the object provided as the last parameter of a BeginInvoke method call.

AsyncWaitHandle AsyncWaitHandle AsyncWaitHandle AsyncWaitHandle

Win32 同期ハンドルをカプセル化し、各種の同期スキームを実装できるようにする WaitHandle を取得します。Gets a WaitHandle that encapsulates Win32 synchronization handles, and allows the implementation of various synchronization schemes.

CompletedSynchronously CompletedSynchronously CompletedSynchronously CompletedSynchronously

BeginInvoke の呼び出しが同期的に完了したかどうかを示す値を取得します。Gets a value indicating whether the BeginInvoke call completed synchronously.

EndInvokeCalled EndInvokeCalled EndInvokeCalled EndInvokeCalled

EndInvoke が現在の AsyncResult で呼び出されたかどうかを示す値を取得または設定します。Gets or sets a value indicating whether EndInvoke has been called on the current AsyncResult.

IsCompleted IsCompleted IsCompleted IsCompleted

サーバーが呼び出しを完了したかどうかを示す値を取得します。Gets a value indicating whether the server has completed the call.

NextSink NextSink NextSink NextSink

シンク チェイン内の次のメッセージ シンクを取得します。Gets the next message sink in the sink chain.

メソッド

AsyncProcessMessage(IMessage, IMessageSink) AsyncProcessMessage(IMessage, IMessageSink) AsyncProcessMessage(IMessage, IMessageSink) AsyncProcessMessage(IMessage, IMessageSink)

IMessageSink インターフェイスを実装します。Implements the IMessageSink interface.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

指定したオブジェクトが、現在のオブジェクトと等しいかどうかを判断します。Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

既定のハッシュ関数として機能します。Serves as the default hash function.

(Inherited from Object)
GetReplyMessage() GetReplyMessage() GetReplyMessage() GetReplyMessage()

非同期呼び出しの応答メッセージを取得します。Gets the response message for the asynchronous call.

GetType() GetType() GetType() GetType()

現在のインスタンスの Type を取得します。Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

現在の Object の簡易コピーを作成します。Creates a shallow copy of the current Object.

(Inherited from Object)
SetMessageCtrl(IMessageCtrl) SetMessageCtrl(IMessageCtrl) SetMessageCtrl(IMessageCtrl) SetMessageCtrl(IMessageCtrl)

ディスパッチされた後の非同期メッセージを制御できるようにする、現在のリモート メソッド呼び出しの IMessageCtrl を設定します。Sets an IMessageCtrl for the current remote method call, which provides a way to control asynchronous messages after they have been dispatched.

SyncProcessMessage(IMessage) SyncProcessMessage(IMessage) SyncProcessMessage(IMessage) SyncProcessMessage(IMessage)

リモート オブジェクトに対するメソッド呼び出しで返される応答メッセージを同期的に処理します。Synchronously processes a response message returned by a method call on a remote object.

ToString() ToString() ToString() ToString()

現在のオブジェクトを表す文字列を返します。Returns a string that represents the current object.

(Inherited from Object)

適用対象

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