TaskFactory.ContinueWhenAll TaskFactory.ContinueWhenAll TaskFactory.ContinueWhenAll TaskFactory.ContinueWhenAll Method

定義

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

オーバーロード

ContinueWhenAll(Task[], Action<Task[]>) ContinueWhenAll(Task[], Action<Task[]>) ContinueWhenAll(Task[], Action<Task[]>) ContinueWhenAll(Task[], Action<Task[]>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll(Task[], Action<Task[]>, CancellationToken) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions) ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions) ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions) ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll(Task[], Action<Task[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

ContinueWhenAll(Task[], Action<Task[]>) ContinueWhenAll(Task[], Action<Task[]>) ContinueWhenAll(Task[], Action<Task[]>) ContinueWhenAll(Task[], Action<Task[]>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task ^> ^> ^ continuationAction);
public System.Threading.Tasks.Task ContinueWhenAll (System.Threading.Tasks.Task[] tasks, Action<System.Threading.Tasks.Task[]> continuationAction);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Action<System.Threading.Tasks.Task[]> -> System.Threading.Tasks.Task
Public Function ContinueWhenAll (tasks As Task(), continuationAction As Action(Of Task())) As Task

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationAction 引数が null です。The continuationAction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

次の例では、正規表現を使用して一連のテキストファイル内の単語数をカウントする個別のタスクを起動します。The following example launches separate tasks that use a regular expression to count the number of words in a set of text files. ContinueWhenAllメソッドは、すべての継続元タスクが完了したときに合計単語数を表示するタスクを起動するために使用されます。The ContinueWhenAll method is used to launch a task that displays the total word count when all the antecedent tasks have completed.

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

public class Example
{
   public static void Main()
   {
      string[] filenames = { "chapter1.txt", "chapter2.txt", 
                             "chapter3.txt", "chapter4.txt",
                             "chapter5.txt" };
      string pattern = @"\b\w+\b";
      var tasks = new List<Task>();  
      int totalWords = 0;
        
      // Determine the number of words in each file.
      foreach (var filename in filenames) 
         tasks.Add( Task.Factory.StartNew( fn => { if (! File.Exists(fn.ToString()))
                                                      throw new FileNotFoundException("{0} does not exist.", filename);

                                                   StreamReader sr = new StreamReader(fn.ToString());
                                                   String content = sr.ReadToEnd();
                                                   sr.Close();
                                                   int words = Regex.Matches(content, pattern).Count;
                                                   Interlocked.Add(ref totalWords, words); 
                                                   Console.WriteLine("{0,-25} {1,6:N0} words", fn, words); }, 
                                           filename));

      var finalTask = Task.Factory.ContinueWhenAll(tasks.ToArray(), wordCountTasks => {
                                                    int nSuccessfulTasks = 0;
                                                    int nFailed = 0;
                                                    int nFileNotFound = 0;
                                                    foreach (var t in wordCountTasks) {
                                                       if (t.Status == TaskStatus.RanToCompletion) 
                                                          nSuccessfulTasks++;
                                                       
                                                       if (t.Status == TaskStatus.Faulted) {
                                                          nFailed++;  
                                                          t.Exception.Handle( (e) => { 
                                                             if (e is FileNotFoundException)
                                                                nFileNotFound++;
                                                             return true;   
                                                          });
                                                       } 
                                                    }   
                                                    Console.WriteLine("\n{0,-25} {1,6} total words\n", 
                                                                      String.Format("{0} files", nSuccessfulTasks), 
                                                                      totalWords); 
                                                    if (nFailed > 0) {
                                                       Console.WriteLine("{0} tasks failed for the following reasons:", nFailed);
                                                       Console.WriteLine("   File not found:    {0}", nFileNotFound);
                                                       if (nFailed != nFileNotFound)
                                                          Console.WriteLine("   Other:          {0}", nFailed - nFileNotFound);
                                                    } 
                                                    });  
      finalTask.Wait();                                                                  
   }
}
// The example displays output like the following:
//       chapter2.txt               1,585 words
//       chapter1.txt               4,012 words
//       chapter5.txt               4,660 words
//       chapter3.txt               7,481 words
//       
//       4 files                    17738 total words
//       
//       1 tasks failed for the following reasons:
//          File not found:    1
Imports System.Collections.Generic
Imports System.IO
Imports System.Threading
Imports System.Threading.Tasks
Imports System.Text.RegularExpressions

Module Example
   Dim totalWords As Integer = 0
   
   Public Sub Main()
      Dim filenames() As String = { "chapter1.txt", "chapter2.txt", 
                                    "chapter3.txt", "chapter4.txt",
                                    "chapter5.txt" }
      Dim pattern As String = "\b\w+\b"
      Dim tasks As New List(Of Task)()  
        
      ' Determine the number of words in each file.
      For Each filename In filenames 
         tasks.Add(Task.Factory.StartNew( Sub(fn)
                                             If Not File.Exists(filename)
                                                Throw New FileNotFoundException("{0} does not exist.", filename)
                                             End If
                                             
                                             Dim sr As New StreamReader(fn.ToString())
                                             Dim content As String = sr.ReadToEnd()
                                             sr.Close()
                                             Dim words As Integer = Regex.Matches(content, pattern).Count
                                             Interlocked.Add(totalWords, words) 
                                             Console.WriteLine("{0,-25} {1,6:N0} words", fn, words)
                                          End Sub, filename))
      Next
      
      Dim finalTask As Task = Task.Factory.ContinueWhenAll(tasks.ToArray(), 
                                                           Sub(wordCountTasks As Task() )
                                                              Dim nSuccessfulTasks As Integer = 0
                                                              Dim nFailed As Integer = 0
                                                              Dim nFileNotFound As Integer = 0
                                                              For Each t In wordCountTasks
                                                                 If t.Status = TaskStatus.RanToCompletion Then _ 
                                                                    nSuccessfulTasks += 1
                                                       
                                                                 If t.Status = TaskStatus.Faulted Then
                                                                    nFailed += 1  
                                                                    t.Exception.Handle(Function(e As Exception) 
                                                                                          If TypeOf e Is FileNotFoundException Then
                                                                                             nFileNotFound += 1
                                                                                          End If   
                                                                                          Return True   
                                                                                       End Function)                       
                                                                 End If 
                                                              Next   
                                                              Console.WriteLine()
                                                              Console.WriteLine("{0,-25} {1,6} total words", 
                                                                                String.Format("{0} files", nSuccessfulTasks), 
                                                                                totalWords) 
                                                              If nFailed > 0 Then
                                                                 Console.WriteLine()
                                                                 Console.WriteLine("{0} tasks failed for the following reasons:", nFailed)
                                                                 Console.WriteLine("   File not found:    {0}", nFileNotFound)
                                                                 If nFailed <> nFileNotFound Then
                                                                    Console.WriteLine("   Other:          {0}", nFailed - nFileNotFound)
                                                                 End If 
                                                              End If
                                                           End Sub)
      finalTask.Wait()                                                                  
   End Sub
   
   Private Sub DisplayResult(wordCountTasks As Task())
   End Sub
End Module
' The example displays output like the following:
'       chapter2.txt               1,585 words
'       chapter1.txt               4,012 words
'       chapter5.txt               4,660 words
'       chapter3.txt               7,481 words
'       
'       4 files                    17738 total words
'       
'       1 tasks failed for the following reasons:
'          File not found:    1

継続タスクのTask.Waitメソッドを呼び出すと、継続元タスクによってスローされた例外を処理することはできTask.Statusません。そのため、この例では、各継続元タスクのプロパティを調べて、タスクが成功したかどうかを判断します。The call to the continuation task's Task.Wait method does not allow it to handle exceptions thrown by the antecedent tasks, so the example examines the Task.Status property of each antecedent task to determine whether the task succeeded.

注釈

メソッドContinueWhenAllは、完了continuationActionステータスに関係なく、 tasks配列内のすべてのタスクが完了したときにデリゲートを実行します。The ContinueWhenAll method executes the continuationAction delegate when all tasks in the tasks array have completed, regardless of their completion status.

配列内のタスクによっtasksてスローされた例外は、構造化例外処理によって継続タスクで使用できません。Exceptions thrown by tasks in the tasks array are not available to the continuation task through structured exception handling. どの例外がスローされたかは、 Task.Exception tasks配列内の各タスクのプロパティを調べることで確認できます。You can determine which exceptions were thrown by examining the Task.Exception property of each task in the tasks array. 構造化例外処理を使用して、配列内のタスクにtasksよってスローさTask.WaitAll(Task[])れた例外を処理するには、メソッドを呼び出します。To use structured exception handling to handle exceptions thrown by tasks in the tasks array, call the Task.WaitAll(Task[]) method.

こちらもご覧ください

ContinueWhenAll(Task[], Action<Task[]>, CancellationToken) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task ^> ^> ^ continuationAction, System::Threading::CancellationToken cancellationToken);
public System.Threading.Tasks.Task ContinueWhenAll (System.Threading.Tasks.Task[] tasks, Action<System.Threading.Tasks.Task[]> continuationAction, System.Threading.CancellationToken cancellationToken);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Action<System.Threading.Tasks.Task[]> * System.Threading.CancellationToken -> System.Threading.Tasks.Task

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

- または --or- cancellationToken を作成した CancellationTokenSource は既に破棄されています。The CancellationTokenSource that created cancellationToken has already been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationAction 引数が null です。The continuationAction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

次の例では、キャンセルトークンを作成します。このトークンは、一連のテキストファイル内の単語数をカウントするために正規表現を使用する別個のタスクに渡します。The following example creates a cancellation token, which it passes to separate tasks that use a regular expression to count the number of words in a set of text files. ファイルが見つからない場合は、キャンセルトークンが設定されます。The cancellation token is set if a file cannot be found. ContinueWhenAll(Task[], Action{Task[]}, CancellationToken)メソッドは、すべての継続元タスクが完了したときに合計単語数を表示するタスクを起動するために使用されます。The ContinueWhenAll(Task[], Action{Task[]}, CancellationToken) method is used to launch a task that displays the total word count when all the antecedent tasks have completed. キャンセルトークンが設定されている場合、1つまたは複数のタスクがキャンセルされAggregateExceptionたことを示します。これは、例外を処理し、エラーメッセージを表示します。If the cancellation token is set, which indicates that one or more tasks have been cancelled, it handles the AggregateException exception and displays an error message.

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

public class Example
{
   public static void Main()
   {
      string[] filenames = { "chapter1.txt", "chapter2.txt", 
                             "chapter3.txt", "chapter4.txt",
                             "chapter5.txt" };
      string pattern = @"\b\w+\b";
      var tasks = new List<Task>();  
      CancellationTokenSource source = new CancellationTokenSource();
      CancellationToken token = source.Token;
      int totalWords = 0;
        
      // Determine the number of words in each file.
      foreach (var filename in filenames)
         tasks.Add( Task.Factory.StartNew( fn => { token.ThrowIfCancellationRequested(); 

                                                   if (! File.Exists(fn.ToString())) {
                                                      source.Cancel();
                                                      token.ThrowIfCancellationRequested();
                                                   }
                                                   
                                                   StreamReader sr = new StreamReader(fn.ToString());
                                                   String content = sr.ReadToEnd();
                                                   sr.Close();
                                                   int words = Regex.Matches(content, pattern).Count;
                                                   Interlocked.Add(ref totalWords, words); 
                                                   Console.WriteLine("{0,-25} {1,6:N0} words", fn, words); }, 
                                           filename, token));

      var finalTask = Task.Factory.ContinueWhenAll(tasks.ToArray(), wordCountTasks => {
                                                    if (! token.IsCancellationRequested) 
                                                       Console.WriteLine("\n{0,-25} {1,6} total words\n", 
                                                                         String.Format("{0} files", wordCountTasks.Length), 
                                                                         totalWords); 
                                                   }, token); 
      try {                                                   
         finalTask.Wait();
      }
      catch (AggregateException ae) {
         foreach (Exception inner in ae.InnerExceptions)
            if (inner is TaskCanceledException)
               Console.WriteLine("\nFailure to determine total word count: a task was cancelled.");
            else
               Console.WriteLine("\nFailure caused by {0}", inner.GetType().Name);      
      }
      finally {
         source.Dispose();
      }
   }
}
// The example displays output like the following:
//       chapter2.txt               1,585 words
//       chapter1.txt               4,012 words
//       
//       Failure to determine total word count: a task was cancelled.
Imports System.Collections.Generic
Imports System.IO
Imports System.Threading
Imports System.Threading.Tasks
Imports System.Text.RegularExpressions

Module Example
   Public Sub Main()
      Dim filenames() As String= { "chapter1.txt", "chapter2.txt", 
                                   "chapter3.txt", "chapter4.txt",
                                   "chapter5.txt" }
      Dim pattern As String = "\b\w+\b"
      Dim tasks As New List(Of Task)()  
      Dim source As New CancellationTokenSource()
      Dim token As CancellationToken = source.Token
      Dim totalWords As Integer = 0
        
      ' Determine the number of words in each file.
      For Each filename In filenames
         tasks.Add( Task.Factory.StartNew( Sub(obj As Object)
                                              Dim fn As String = CStr(obj)
                                              token.ThrowIfCancellationRequested() 
                                              If Not File.Exists(fn) Then 
                                                 source.Cancel()
                                                 token.ThrowIfCancellationRequested()
                                              End If        
                                                   
                                              Dim sr As New StreamReader(fn.ToString())
                                              Dim content As String = sr.ReadToEnd()
                                              sr.Close()
                                              Dim words As Integer = Regex.Matches(content, pattern).Count
                                              Interlocked.Add(totalWords, words) 
                                              Console.WriteLine("{0,-25} {1,6:N0} words", fn, words) 
                                           End Sub, filename, token))
      Next
      
      Dim finalTask As Task = Task.Factory.ContinueWhenAll(tasks.ToArray(), 
                                                           Sub(wordCountTasks As Task())
                                                              If Not token.IsCancellationRequested Then 
                                                                 Console.WriteLine("\n{0,-25} {1,6} total words\n", 
                                                                                   String.Format("{0} files", wordCountTasks.Length), 
                                                                                   totalWords)
                                                              End If                      
                                                           End Sub, token) 
      Try                                                    
         finalTask.Wait()
      Catch ae As AggregateException 
         For Each inner In ae.InnerExceptions
            Console.WriteLine()
            If TypeOf inner Is TaskCanceledException
               Console.WriteLine("Failure to determine total word count: a task was cancelled.")
            Else
               Console.WriteLine("Failure caused by {0}", inner.GetType().Name)
            End If 
         Next           
      Finally
         source.Dispose()
      End Try                                                                     
   End Sub
End Module
' The example displays output like the following:
'       chapter2.txt               1,585 words
'       chapter1.txt               4,012 words
'       
'       Failure to determine total word count: a task was cancelled.

注釈

このメソッドは、 continuationAction完了ステータスに関係なく、 tasks配列内のすべてのタスクが完了したときにデリゲートを実行します。This method executes the continuationAction delegate when all tasks in the tasks array have completed, regardless of their completion status.

こちらもご覧ください

ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions) ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions) ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions) ContinueWhenAll(Task[], Action<Task[]>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task ^> ^> ^ continuationAction, System::Threading::Tasks::TaskContinuationOptions continuationOptions);
public System.Threading.Tasks.Task ContinueWhenAll (System.Threading.Tasks.Task[] tasks, Action<System.Threading.Tasks.Task[]> continuationAction, System.Threading.Tasks.TaskContinuationOptions continuationOptions);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Action<System.Threading.Tasks.Task[]> * System.Threading.Tasks.TaskContinuationOptions -> System.Threading.Tasks.Task
Public Function ContinueWhenAll (tasks As Task(), continuationAction As Action(Of Task()), continuationOptions As TaskContinuationOptions) As Task

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

または-or- continuationAction 引数が null です。The continuationAction argument is null.

continuationOptions 引数に無効な値が指定されています。The continuationOptions argument specifies an invalid value.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll(Task[], Action<Task[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll(Task[], Action<Task[]>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task ^> ^> ^ continuationAction, System::Threading::CancellationToken cancellationToken, System::Threading::Tasks::TaskContinuationOptions continuationOptions, System::Threading::Tasks::TaskScheduler ^ scheduler);
public System.Threading.Tasks.Task ContinueWhenAll (System.Threading.Tasks.Task[] tasks, Action<System.Threading.Tasks.Task[]> continuationAction, System.Threading.CancellationToken cancellationToken, System.Threading.Tasks.TaskContinuationOptions continuationOptions, System.Threading.Tasks.TaskScheduler scheduler);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Action<System.Threading.Tasks.Task[]> * System.Threading.CancellationToken * System.Threading.Tasks.TaskContinuationOptions * System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.Task

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task.

scheduler
TaskScheduler TaskScheduler TaskScheduler TaskScheduler

新しい継続タスクをスケジュールするときに使用するオブジェクト。The object that is used to schedule the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列が null です。The tasks array is null.

- または --or- continuationAction 引数が null です。The continuationAction argument is null.

または-or- scheduler 引数が null です。The scheduler argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

continuationOptions に無効な TaskContinuationOptions 値が指定されています。continuationOptions specifies an invalid TaskContinuationOptions value.

指定された CancellationToken は既に破棄されています。The provided CancellationToken has already been disposed.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult, typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^, TResult> ^ continuationFunction, System::Threading::CancellationToken cancellationToken, System::Threading::Tasks::TaskContinuationOptions continuationOptions, System::Threading::Tasks::TaskScheduler ^ scheduler);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TAntecedentResult,TResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Func<System.Threading.Tasks.Task<TAntecedentResult>[],TResult> continuationFunction, System.Threading.CancellationToken cancellationToken, System.Threading.Tasks.TaskContinuationOptions continuationOptions, System.Threading.Tasks.TaskScheduler scheduler);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Func<System.Threading.Tasks.Task<'AntecedentResult>[], 'Result> * System.Threading.CancellationToken * System.Threading.Tasks.TaskContinuationOptions * System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.Task<'Result>

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task<TAntecedentResult>[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

scheduler
TaskScheduler TaskScheduler TaskScheduler TaskScheduler

新しい継続タスクをスケジュールするときに使用するオブジェクト。The object that is used to schedule the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列が null です。The tasks array is null.

- または --or- continuationFunction 引数が null です。The continuationFunction argument is null.

- または --or- scheduler 引数が null です。The scheduler argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

continuationOptions 引数に無効な値が指定されています。The continuationOptions argument specifies an invalid value.

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

- または --or- cancellationToken を作成した CancellationTokenSource は既に破棄されています。The CancellationTokenSource that created cancellationToken has already been disposed.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult, typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^, TResult> ^ continuationFunction, System::Threading::Tasks::TaskContinuationOptions continuationOptions);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TAntecedentResult,TResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Func<System.Threading.Tasks.Task<TAntecedentResult>[],TResult> continuationFunction, System.Threading.Tasks.TaskContinuationOptions continuationOptions);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Func<System.Threading.Tasks.Task<'AntecedentResult>[], 'Result> * System.Threading.Tasks.TaskContinuationOptions -> System.Threading.Tasks.Task<'Result>
Public Function ContinueWhenAll(Of TAntecedentResult, TResult) (tasks As Task(Of TAntecedentResult)(), continuationFunction As Func(Of Task(Of TAntecedentResult)(), TResult), continuationOptions As TaskContinuationOptions) As Task(Of TResult)

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task<TAntecedentResult>[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

または-or- continuationFunction 引数が null です。The continuationFunction argument is null.

continuationOptions 引数に無効な値が指定されています。The continuationOptions argument specifies an invalid value.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult, typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^, TResult> ^ continuationFunction, System::Threading::CancellationToken cancellationToken);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TAntecedentResult,TResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Func<System.Threading.Tasks.Task<TAntecedentResult>[],TResult> continuationFunction, System.Threading.CancellationToken cancellationToken);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Func<System.Threading.Tasks.Task<'AntecedentResult>[], 'Result> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<'Result>

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task<TAntecedentResult>[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

- または --or- cancellationToken を作成した CancellationTokenSource は既に破棄されています。The CancellationTokenSource that created cancellationToken has already been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationFunction 引数が null です。The continuationFunction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>) ContinueWhenAll<TAntecedentResult,TResult>(Task<TAntecedentResult>[], Func<Task<TAntecedentResult>[],TResult>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult, typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^, TResult> ^ continuationFunction);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TAntecedentResult,TResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Func<System.Threading.Tasks.Task<TAntecedentResult>[],TResult> continuationFunction);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Func<System.Threading.Tasks.Task<'AntecedentResult>[], 'Result> -> System.Threading.Tasks.Task<'Result>
Public Function ContinueWhenAll(Of TAntecedentResult, TResult) (tasks As Task(Of TAntecedentResult)(), continuationFunction As Func(Of Task(Of TAntecedentResult)(), TResult)) As Task(Of TResult)

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task<TAntecedentResult>[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationFunction 引数が null です。The continuationFunction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult>
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^> ^ continuationAction, System::Threading::CancellationToken cancellationToken, System::Threading::Tasks::TaskContinuationOptions continuationOptions, System::Threading::Tasks::TaskScheduler ^ scheduler);
public System.Threading.Tasks.Task ContinueWhenAll<TAntecedentResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Action<System.Threading.Tasks.Task<TAntecedentResult>[]> continuationAction, System.Threading.CancellationToken cancellationToken, System.Threading.Tasks.TaskContinuationOptions continuationOptions, System.Threading.Tasks.TaskScheduler scheduler);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Action<System.Threading.Tasks.Task<'AntecedentResult>[]> * System.Threading.CancellationToken * System.Threading.Tasks.TaskContinuationOptions * System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.Task

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task<TAntecedentResult>[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

scheduler
TaskScheduler TaskScheduler TaskScheduler TaskScheduler

新しい継続タスクをスケジュールするときに使用するオブジェクト。The object that is used to schedule the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列が null です。The tasks array is null.

または-or- continuationAction 引数が null です。The continuationAction argument is null.

- または --or- scheduler 引数が null です。The scheduler argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

continuationOptions に無効な TaskContinuationOptions 値が指定されています。continuationOptions specifies an invalid TaskContinuationOptions value.

指定された CancellationToken は既に破棄されています。The provided CancellationToken has already been disposed.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult>
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^> ^ continuationAction, System::Threading::Tasks::TaskContinuationOptions continuationOptions);
public System.Threading.Tasks.Task ContinueWhenAll<TAntecedentResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Action<System.Threading.Tasks.Task<TAntecedentResult>[]> continuationAction, System.Threading.Tasks.TaskContinuationOptions continuationOptions);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Action<System.Threading.Tasks.Task<'AntecedentResult>[]> * System.Threading.Tasks.TaskContinuationOptions -> System.Threading.Tasks.Task
Public Function ContinueWhenAll(Of TAntecedentResult) (tasks As Task(Of TAntecedentResult)(), continuationAction As Action(Of Task(Of TAntecedentResult)()), continuationOptions As TaskContinuationOptions) As Task

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task<TAntecedentResult>[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationAction 引数が null です。The continuationAction argument is null.

continuationOptions 引数に無効な値が指定されています。The continuationOptions argument specifies an invalid value.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult>
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^> ^ continuationAction, System::Threading::CancellationToken cancellationToken);
public System.Threading.Tasks.Task ContinueWhenAll<TAntecedentResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Action<System.Threading.Tasks.Task<TAntecedentResult>[]> continuationAction, System.Threading.CancellationToken cancellationToken);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Action<System.Threading.Tasks.Task<'AntecedentResult>[]> * System.Threading.CancellationToken -> System.Threading.Tasks.Task

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task<TAntecedentResult>[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

- または --or- cancellationToken を作成した CancellationTokenSource は既に破棄されています。The CancellationTokenSource that created cancellationToken has already been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationAction 引数が null です。The continuationAction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

こちらもご覧ください

ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>) ContinueWhenAll<TAntecedentResult>(Task<TAntecedentResult>[], Action<Task<TAntecedentResult>[]>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TAntecedentResult>
 System::Threading::Tasks::Task ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^ tasks, Action<cli::array <System::Threading::Tasks::Task<TAntecedentResult> ^> ^> ^ continuationAction);
public System.Threading.Tasks.Task ContinueWhenAll<TAntecedentResult> (System.Threading.Tasks.Task<TAntecedentResult>[] tasks, Action<System.Threading.Tasks.Task<TAntecedentResult>[]> continuationAction);
member this.ContinueWhenAll : System.Threading.Tasks.Task<'AntecedentResult>[] * Action<System.Threading.Tasks.Task<'AntecedentResult>[]> -> System.Threading.Tasks.Task
Public Function ContinueWhenAll(Of TAntecedentResult) (tasks As Task(Of TAntecedentResult)(), continuationAction As Action(Of Task(Of TAntecedentResult)())) As Task

型パラメーター

TAntecedentResult

継続元の tasks の結果の型。The type of the result of the antecedent tasks.

パラメーター

tasks
Task<TAntecedentResult>[]

継続タスクの配列。The array of tasks from which to continue.

continuationAction
Action<Task<TAntecedentResult>[]>

tasks 配列内のすべてのタスクが完了したときに実行するアクション デリゲート。The action delegate to execute when all tasks in the tasks array have completed.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationAction 引数が null です。The continuationAction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

こちらもご覧ください

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task ^> ^, TResult> ^ continuationFunction);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TResult> (System.Threading.Tasks.Task[] tasks, Func<System.Threading.Tasks.Task[],TResult> continuationFunction);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Func<System.Threading.Tasks.Task[], 'Result> -> System.Threading.Tasks.Task<'Result>
Public Function ContinueWhenAll(Of TResult) (tasks As Task(), continuationFunction As Func(Of Task(), TResult)) As Task(Of TResult)

型パラメーター

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

- または --or- continuationFunction 引数が null です。The continuationFunction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

こちらもご覧ください

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task ^> ^, TResult> ^ continuationFunction, System::Threading::CancellationToken cancellationToken);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TResult> (System.Threading.Tasks.Task[] tasks, Func<System.Threading.Tasks.Task[],TResult> continuationFunction, System.Threading.CancellationToken cancellationToken);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Func<System.Threading.Tasks.Task[], 'Result> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<'Result>

型パラメーター

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

- または --or- cancellationToken を作成した CancellationTokenSource は既に破棄されています。The CancellationTokenSource that created cancellationToken has already been disposed.

tasks 配列が null です。The tasks array is null.

または-or- continuationFunction 引数が null です。The continuationFunction argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

こちらもご覧ください

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, TaskContinuationOptions)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task ^> ^, TResult> ^ continuationFunction, System::Threading::Tasks::TaskContinuationOptions continuationOptions);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TResult> (System.Threading.Tasks.Task[] tasks, Func<System.Threading.Tasks.Task[],TResult> continuationFunction, System.Threading.Tasks.TaskContinuationOptions continuationOptions);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Func<System.Threading.Tasks.Task[], 'Result> * System.Threading.Tasks.TaskContinuationOptions -> System.Threading.Tasks.Task<'Result>
Public Function ContinueWhenAll(Of TResult) (tasks As Task(), continuationFunction As Func(Of Task(), TResult), continuationOptions As TaskContinuationOptions) As Task(Of TResult)

型パラメーター

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列の要素が破棄されました。An element in the tasks array has been disposed.

tasks 配列が null です。The tasks array is null.

または-or- continuationFunction 引数が null です。The continuationFunction argument is null.

continuationOptions 引数に無効な値が指定されています。The continuationOptions argument specifies an invalid value.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler) ContinueWhenAll<TResult>(Task[], Func<Task[],TResult>, CancellationToken, TaskContinuationOptions, TaskScheduler)

一連の指定したタスクが完了したときに開始する継続タスクを作成します。Creates a continuation task that starts when a set of specified tasks has completed.

public:
generic <typename TResult>
 System::Threading::Tasks::Task<TResult> ^ ContinueWhenAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, Func<cli::array <System::Threading::Tasks::Task ^> ^, TResult> ^ continuationFunction, System::Threading::CancellationToken cancellationToken, System::Threading::Tasks::TaskContinuationOptions continuationOptions, System::Threading::Tasks::TaskScheduler ^ scheduler);
public System.Threading.Tasks.Task<TResult> ContinueWhenAll<TResult> (System.Threading.Tasks.Task[] tasks, Func<System.Threading.Tasks.Task[],TResult> continuationFunction, System.Threading.CancellationToken cancellationToken, System.Threading.Tasks.TaskContinuationOptions continuationOptions, System.Threading.Tasks.TaskScheduler scheduler);
member this.ContinueWhenAll : System.Threading.Tasks.Task[] * Func<System.Threading.Tasks.Task[], 'Result> * System.Threading.CancellationToken * System.Threading.Tasks.TaskContinuationOptions * System.Threading.Tasks.TaskScheduler -> System.Threading.Tasks.Task<'Result>

型パラメーター

TResult

continuationFunction デリゲートによって返され、作成されたタスクに関連付けられている結果の型。The type of the result that is returned by the continuationFunction delegate and associated with the created task.

パラメーター

tasks
Task[]

継続タスクの配列。The array of tasks from which to continue.

continuationFunction
Func<Task[],TResult>

tasks 配列内のすべてのタスクが完了したときに非同期的に実行する関数デリゲート。The function delegate to execute asynchronously when all tasks in the tasks array have completed.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

新しい継続タスクに割り当てるキャンセル トークン。The cancellation token to assign to the new continuation task.

continuationOptions
TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions TaskContinuationOptions

新しい継続タスクの動作を制御する列挙値のビットごとの組み合わせ。A bitwise combination of the enumeration values that control the behavior of the new continuation task. NotOn* メンバーと OnlyOn* メンバーはサポートされていません。The NotOn* and OnlyOn* members are not supported.

scheduler
TaskScheduler TaskScheduler TaskScheduler TaskScheduler

新しい継続タスクをスケジュールするときに使用するオブジェクト。The object that is used to schedule the new continuation task.

戻り値

新しい継続タスク。The new continuation task.

例外

tasks 配列が null です。The tasks array is null.

- または --or- continuationFunction 引数が null です。The continuationFunction argument is null.

- または --or- scheduler 引数が null です。The scheduler argument is null.

tasks 配列が空か、null 値が含まれています。The tasks array is empty or contains a null value.

continuationOptions に無効な TaskContinuationOptions 値が指定されています。continuationOptions specifies an invalid TaskContinuationOptions value.

指定された CancellationToken は既に破棄されています。The provided CancellationToken has already been disposed.

注釈

Noton * と onlyon * TaskContinuationOptionsは、継続が実行されるTaskStatus状態を制限するものであり、でContinueWhenAllは無効です。The NotOn* and OnlyOn* TaskContinuationOptions, which constrain for which TaskStatus states a continuation will be executed, are illegal with ContinueWhenAll.

こちらもご覧ください

適用対象