Task.WaitAll Task.WaitAll Task.WaitAll Task.WaitAll Method

Definición

Espera que se complete la ejecución de todos los objetos Task proporcionados.Waits for all of the provided Task objects to complete execution.

Sobrecargas

WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[])

Espera que se complete la ejecución de todos los objetos Task proporcionados.Waits for all of the provided Task objects to complete execution.

WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32)

Espera a que todos los objetos proporcionados de Task completen la ejecución dentro de un número especificado de milisegundos.Waits for all of the provided Task objects to complete execution within a specified number of milliseconds.

WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken)

Espera que se complete la ejecución de todos los objetos Task proporcionados, a menos que se cancele la espera.Waits for all of the provided Task objects to complete execution unless the wait is cancelled.

WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan)

Espera a que todos los objetos Task cancelables que se hayan proporcionado completen la ejecución en un intervalo de tiempo especificado.Waits for all of the provided cancellable Task objects to complete execution within a specified time interval.

WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken)

Espera a que todos los objetos Task proporcionados completen la ejecución dentro de un número especificado de milisegundos o hasta que se cancele la espera.Waits for all of the provided Task objects to complete execution within a specified number of milliseconds or until the wait is cancelled.

WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[]) WaitAll(Task[])

Espera que se complete la ejecución de todos los objetos Task proporcionados.Waits for all of the provided Task objects to complete execution.

public:
 static void WaitAll(... cli::array <System::Threading::Tasks::Task ^> ^ tasks);
public static void WaitAll (params System.Threading.Tasks.Task[] tasks);
static member WaitAll : System.Threading.Tasks.Task[] -> unit
Public Shared Sub WaitAll (ParamArray tasks As Task())

Parámetros

tasks
Task[]

Matriz de instancias de Task en las que se va a esperar.An array of Task instances on which to wait.

Excepciones

Se eliminaron uno o varios de los objetos Task de tasks.One or more of the Task objects in tasks has been disposed.

El argumento tasks es null.The tasks argument is null.

El argumento tasks contiene un elemento null.The tasks argument contains a null element.

Se canceló al menos una de las instancias Task.At least one of the Task instances was canceled. Si se canceló una tarea, la excepción AggregateException contiene una excepción OperationCanceledException en su colección InnerExceptions.If a task was canceled, the AggregateException exception contains an OperationCanceledException exception in its InnerExceptions collection.

O bien-or- Se inició una excepción durante la ejecución de al menos una de las instancias Task.An exception was thrown during the execution of at least one of the Task instances.

Ejemplos

El ejemplo siguiente inicia 10 tareas, cada uno de los cuales se pasa un índice como un objeto de estado.The following example starts 10 tasks, each of which is passed an index as a state object. Las tareas con un índice de dos a cinco producen excepciones.Tasks with an index from two to five throw exceptions. La llamada a la WaitAll método ajusta todas las excepciones en un AggregateException de objetos y se propaga al subproceso que realiza la llamada.The call to the WaitAll method wraps all exceptions in an AggregateException object and propagates it to the calling thread.

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;

class Example
{
    static void Main()
    {
        var tasks = new List<Task<int>>();
         
        // Define a delegate that prints and returns the system tick count
        Func<object, int> action = (object obj) =>
        {
            int i = (int)obj;

            // Make each thread sleep a different time in order to return a different tick count
            Thread.Sleep(i * 100);

            // The tasks that receive an argument between 2 and 5 throw exceptions
            if (2 <= i && i <= 5)
            {
                throw new InvalidOperationException("SIMULATED EXCEPTION");
            }

            int tickCount = Environment.TickCount;
            Console.WriteLine("Task={0}, i={1}, TickCount={2}, Thread={3}", Task.CurrentId, i, tickCount, Thread.CurrentThread.ManagedThreadId);

            return tickCount;
        };

        // Construct started tasks
        for (int i = 0; i < 10; i++)
        {
            int index = i;
            tasks.Add(Task<int>.Factory.StartNew(action, index));
        }

        try
        {
            // Wait for all the tasks to finish.
            Task.WaitAll(tasks.ToArray());

            // We should never get to this point
            Console.WriteLine("WaitAll() has not thrown exceptions. THIS WAS NOT EXPECTED.");
        }
        catch (AggregateException e)
        {
            Console.WriteLine("\nThe following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)");
            for (int j = 0; j < e.InnerExceptions.Count; j++)
            {
                Console.WriteLine("\n-------------------------------------------------\n{0}", e.InnerExceptions[j].ToString());
            }
        }
    }
}
// The example displays output like the following:
//     Task=1, i=0, TickCount=1203822250, Thread=3
//     Task=2, i=1, TickCount=1203822359, Thread=4
//     Task=7, i=6, TickCount=1203823484, Thread=3
//     Task=8, i=7, TickCount=1203823890, Thread=4
//     Task=9, i=8, TickCount=1203824296, Thread=3
//     Task=10, i=9, TickCount=1203824796, Thread=4
//     
//     The following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
//     
//     -------------------------------------------------
//     System.InvalidOperationException: SIMULATED EXCEPTION
//        at Example.<Main>b__0(Object obj)
//        at System.Threading.Tasks.Task`1.InnerInvoke()
//        at System.Threading.Tasks.Task.Execute()
Imports System.Collections.Generic
Imports System.Threading
Imports System.Threading.Tasks

Module WaitAllDemo
    Sub Main()
        Dim tasks As New List(Of Task(Of Integer))()
        ' Define a delegate that prints and returns the system tick count
        Dim action As Func(Of Object, Integer) = Function(obj As Object)
                                                     Dim i As Integer = CInt(obj)

                                                     ' Make each thread sleep a different time in order to return a different tick count
                                                     Thread.Sleep(i * 100)

                                                     ' The tasks that receive an argument between 2 and 5 throw exceptions
                                                     If 2 <= i AndAlso i <= 5 Then
                                                         Throw New InvalidOperationException("SIMULATED EXCEPTION")
                                                     End If

                                                     Dim tickCount As Integer = Environment.TickCount
                                                     Console.WriteLine("Task={0}, i={1}, TickCount={2}, Thread={3}", Task.CurrentId, i, tickCount, Thread.CurrentThread.ManagedThreadId)

                                                     Return tickCount
                                                 End Function

        ' Construct started tasks
        For i As Integer = 0 To 9
            Dim index As Integer = i
            tasks.Add(Task(Of Integer).Factory.StartNew(action, index))
        Next

        Try
            ' Wait for all the tasks to finish.
            Task.WaitAll(tasks.ToArray())

            ' We should never get to this point
            Console.WriteLine("WaitAll() has not thrown exceptions. THIS WAS NOT EXPECTED.")
        Catch e As AggregateException
            Console.WriteLine(vbLf & "The following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)")
            For j As Integer = 0 To e.InnerExceptions.Count - 1
                Console.WriteLine(vbLf & "-------------------------------------------------" & vbLf & "{0}", e.InnerExceptions(j).ToString())
            Next
        End Try
    End Sub
End Module
' The example displays output like the following:
'     Task=1, i=0, TickCount=1203822250, Thread=3
'     Task=2, i=1, TickCount=1203822359, Thread=4
'     Task=7, i=6, TickCount=1203823484, Thread=3
'     Task=8, i=7, TickCount=1203823890, Thread=4
'     Task=9, i=8, TickCount=1203824296, Thread=3
'     Task=10, i=9, TickCount=1203824796, Thread=4
'     
'     The following exceptions have been thrown by WaitAll(): (THIS WAS EXPECTED)
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()
'     
'     -------------------------------------------------
'     System.InvalidOperationException: SIMULATED EXCEPTION
'        at Example.<Main>b__0(Object obj)
'        at System.Threading.Tasks.Task`1.InnerInvoke()
'        at System.Threading.Tasks.Task.Execute()

WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32) WaitAll(Task[], Int32)

Espera a que todos los objetos proporcionados de Task completen la ejecución dentro de un número especificado de milisegundos.Waits for all of the provided Task objects to complete execution within a specified number of milliseconds.

public:
 static bool WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, int millisecondsTimeout);
public static bool WaitAll (System.Threading.Tasks.Task[] tasks, int millisecondsTimeout);
static member WaitAll : System.Threading.Tasks.Task[] * int -> bool
Public Shared Function WaitAll (tasks As Task(), millisecondsTimeout As Integer) As Boolean

Parámetros

tasks
Task[]

Matriz de instancias de Task en las que se va a esperar.An array of Task instances on which to wait.

millisecondsTimeout
Int32 Int32 Int32 Int32

Número de milisegundos de espera o Infinite (-1) para esperar indefinidamente.The number of milliseconds to wait, or Infinite (-1) to wait indefinitely.

Devoluciones

true si todas las instancias de Task completan su ejecución en el tiempo asignado; en caso contrario, false.true if all of the Task instances completed execution within the allotted time; otherwise, false.

Excepciones

Se eliminaron uno o varios de los objetos Task de tasks.One or more of the Task objects in tasks has been disposed.

El argumento tasks es null.The tasks argument is null.

Se canceló al menos una de las instancias Task.At least one of the Task instances was canceled. Si se canceló una tarea, la AggregateException contiene una OperationCanceledException en su colección InnerExceptions.If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection.

O bien-or- Se inició una excepción durante la ejecución de al menos una de las instancias Task.An exception was thrown during the execution of at least one of the Task instances.

millisecondsTimeout es un número negativo distinto de-1, que representa un tiempo de espera infinito.millisecondsTimeout is a negative number other than -1, which represents an infinite time-out.

El argumento tasks contiene un elemento null.The tasks argument contains a null element.

WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken) WaitAll(Task[], CancellationToken)

Espera que se complete la ejecución de todos los objetos Task proporcionados, a menos que se cancele la espera.Waits for all of the provided Task objects to complete execution unless the wait is cancelled.

public:
 static void WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, System::Threading::CancellationToken cancellationToken);
public static void WaitAll (System.Threading.Tasks.Task[] tasks, System.Threading.CancellationToken cancellationToken);
static member WaitAll : System.Threading.Tasks.Task[] * System.Threading.CancellationToken -> unit

Parámetros

tasks
Task[]

Matriz de instancias de Task en las que se va a esperar.An array of Task instances on which to wait.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

Un CancellationToken que se observará mientras se espera a que se complete la tarea.A CancellationToken to observe while waiting for the tasks to complete.

Excepciones

cancellationToken se canceló.The cancellationToken was canceled.

El argumento tasks es null.The tasks argument is null.

Se canceló al menos una de las instancias Task.At least one of the Task instances was canceled. Si se canceló una tarea, la AggregateException contiene una OperationCanceledException en su colección InnerExceptions.If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection.

O bien-or- Se inició una excepción durante la ejecución de al menos una de las instancias Task.An exception was thrown during the execution of at least one of the Task instances.

El argumento tasks contiene un elemento null.The tasks argument contains a null element.

Se eliminaron uno o varios de los objetos Task de tasks.One or more of the Task objects in tasks has been disposed.

Comentarios

El cancellationToken argumento se utiliza para cancelar la operación de espera.The cancellationToken argument is used to cancel the wait operation. Cancelación de las tareas es una operación distinta y está señalada por el AggregateException como se mencionó anteriormente.Cancellation of the tasks is a distinct operation, and is signaled by the AggregateException as noted above.

WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan) WaitAll(Task[], TimeSpan)

Espera a que todos los objetos Task cancelables que se hayan proporcionado completen la ejecución en un intervalo de tiempo especificado.Waits for all of the provided cancellable Task objects to complete execution within a specified time interval.

public:
 static bool WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, TimeSpan timeout);
public static bool WaitAll (System.Threading.Tasks.Task[] tasks, TimeSpan timeout);
static member WaitAll : System.Threading.Tasks.Task[] * TimeSpan -> bool
Public Shared Function WaitAll (tasks As Task(), timeout As TimeSpan) As Boolean

Parámetros

tasks
Task[]

Matriz de instancias de Task en las que se va a esperar.An array of Task instances on which to wait.

timeout
TimeSpan TimeSpan TimeSpan TimeSpan

Estructura TimeSpan que representa el número de milisegundos de espera o estructura TimeSpan que representa -1 milisegundos para esperar indefinidamente.A TimeSpan that represents the number of milliseconds to wait, or a TimeSpan that represents -1 milliseconds to wait indefinitely.

Devoluciones

true si todas las instancias de Task completan su ejecución en el tiempo asignado; en caso contrario, false.true if all of the Task instances completed execution within the allotted time; otherwise, false.

Excepciones

Se eliminaron uno o varios de los objetos Task de tasks.One or more of the Task objects in tasks has been disposed.

El argumento tasks es null.The tasks argument is null.

Se canceló al menos una de las instancias Task.At least one of the Task instances was canceled. Si se canceló una tarea, la AggregateException contiene una OperationCanceledException en su colección InnerExceptions.If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection.

O bien-or- Se inició una excepción durante la ejecución de al menos una de las instancias Task.An exception was thrown during the execution of at least one of the Task instances.

timeout es un número negativo distinto de -1 milisegundos, que representa un tiempo de espera infinito.timeout is a negative number other than -1 milliseconds, which represents an infinite time-out. O bien-or- timeout es mayor que MaxValue.timeout is greater than MaxValue.

El argumento tasks contiene un elemento null.The tasks argument contains a null element.

WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken) WaitAll(Task[], Int32, CancellationToken)

Espera a que todos los objetos Task proporcionados completen la ejecución dentro de un número especificado de milisegundos o hasta que se cancele la espera.Waits for all of the provided Task objects to complete execution within a specified number of milliseconds or until the wait is cancelled.

public:
 static bool WaitAll(cli::array <System::Threading::Tasks::Task ^> ^ tasks, int millisecondsTimeout, System::Threading::CancellationToken cancellationToken);
public static bool WaitAll (System.Threading.Tasks.Task[] tasks, int millisecondsTimeout, System.Threading.CancellationToken cancellationToken);
static member WaitAll : System.Threading.Tasks.Task[] * int * System.Threading.CancellationToken -> bool

Parámetros

tasks
Task[]

Matriz de instancias de Task en las que se va a esperar.An array of Task instances on which to wait.

millisecondsTimeout
Int32 Int32 Int32 Int32

Número de milisegundos de espera o Infinite (-1) para esperar indefinidamente.The number of milliseconds to wait, or Infinite (-1) to wait indefinitely.

cancellationToken
CancellationToken CancellationToken CancellationToken CancellationToken

Un CancellationToken que se observará mientras se espera a que se complete la tarea.A CancellationToken to observe while waiting for the tasks to complete.

Devoluciones

true si todas las instancias de Task completan su ejecución en el tiempo asignado; en caso contrario, false.true if all of the Task instances completed execution within the allotted time; otherwise, false.

Excepciones

Se eliminaron uno o varios de los objetos Task de tasks.One or more of the Task objects in tasks has been disposed.

El argumento tasks es null.The tasks argument is null.

Se canceló al menos una de las instancias Task.At least one of the Task instances was canceled. Si se canceló una tarea, la AggregateException contiene una OperationCanceledException en su colección InnerExceptions.If a task was canceled, the AggregateException contains an OperationCanceledException in its InnerExceptions collection.

O bien-or- Se inició una excepción durante la ejecución de al menos una de las instancias Task.An exception was thrown during the execution of at least one of the Task instances.

millisecondsTimeout es un número negativo distinto de-1, que representa un tiempo de espera infinito.millisecondsTimeout is a negative number other than -1, which represents an infinite time-out.

El argumento tasks contiene un elemento null.The tasks argument contains a null element.

cancellationToken se canceló.The cancellationToken was canceled.

Comentarios

El cancellationToken argumento se utiliza para cancelar la operación de espera.The cancellationToken argument is used to cancel the wait operation. Cancelación de las tareas es una operación distinta y está señalada por el AggregateException se ha indicado anteriormente.Cancellation of the tasks is a distinct operation, and is signaled by the AggregateException noted above.

Se aplica a