C# Task.WaitAll方法代碼示例

本文整理匯總了C#中System.Threading.Tasks.Task.WaitAll方法的典型用法代碼示例。如果您正苦於以下問題：C# Task.WaitAll方法的具體用法？C# Task.WaitAll怎麽用？C# Task.WaitAll使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Threading.Tasks.Task的用法示例。

在下文中一共展示了Task.WaitAll方法的1個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的C#代碼示例。

示例1: Main

//引入命名空間
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());
            }
        }
    }
}

開發者ID:.NET開發者，項目名稱:System.Threading.Tasks，代碼行數:57，代碼來源:Task.WaitAll

輸出：

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.b__0(Object obj)
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()

-------------------------------------------------
System.InvalidOperationException: SIMULATED EXCEPTION
at Example.b__0(Object obj)
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()

-------------------------------------------------
System.InvalidOperationException: SIMULATED EXCEPTION
at Example.b__0(Object obj)
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()

-------------------------------------------------
System.InvalidOperationException: SIMULATED EXCEPTION
at Example.b__0(Object obj)
at System.Threading.Tasks.Task`1.InnerInvoke()
at System.Threading.Tasks.Task.Execute()

注：本文中的System.Threading.Tasks.Task.WaitAll方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。