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C# AsyncResult.AsyncDelegate属性代码示例

本文整理汇总了C#中System.Runtime.Remoting.Messaging.AsyncResult.AsyncDelegate属性的典型用法代码示例。如果您正苦于以下问题:C# AsyncResult.AsyncDelegate属性的具体用法?C# AsyncResult.AsyncDelegate怎么用?C# AsyncResult.AsyncDelegate使用的例子?那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在System.Runtime.Remoting.Messaging.AsyncResult的用法示例。


在下文中一共展示了AsyncResult.AsyncDelegate属性的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C#代码示例。

示例1: TestMethod

//引入命名空间
using System;
using System.Threading; 

namespace Examples.AdvancedProgramming.AsynchronousOperations
{
    public class AsyncDemo 
    {
        // The method to be executed asynchronously.
        public string TestMethod(int callDuration, out int threadId) 
        {
            Console.WriteLine("Test method begins.");
            Thread.Sleep(callDuration);
            threadId = Thread.CurrentThread.ManagedThreadId;
            return String.Format("My call time was {0}.", callDuration.ToString());
        }
    }
    // The delegate must have the same signature as the method
    // it will call asynchronously.
    public delegate string AsyncMethodCaller(int callDuration, out int threadId);
}
开发者ID:.NET开发者,项目名称:System.Runtime.Remoting.Messaging,代码行数:21,代码来源:AsyncResult.AsyncDelegate

示例2: Main

//引入命名空间
using System;
using System.Threading;
using System.Runtime.Remoting.Messaging;

namespace Examples.AdvancedProgramming.AsynchronousOperations
{
    public class AsyncMain 
    {
        static void Main() 
        {
            // Create an instance of the test class.
            AsyncDemo ad = new AsyncDemo();

            // Create the delegate.
            AsyncMethodCaller caller = new AsyncMethodCaller(ad.TestMethod);
       
            // The threadId parameter of TestMethod is an out parameter, so
            // its input value is never used by TestMethod. Therefore, a dummy
            // variable can be passed to the BeginInvoke call. If the threadId
            // parameter were a ref parameter, it would have to be a class-
            // level field so that it could be passed to both BeginInvoke and 
            // EndInvoke.
            int dummy = 0;

            // Initiate the asynchronous call, passing three seconds (3000 ms)
            // for the callDuration parameter of TestMethod; a dummy variable 
            // for the out parameter (threadId); the callback delegate; and
            // state information that can be retrieved by the callback method.
            // In this case, the state information is a string that can be used
            // to format a console message.
            IAsyncResult result = caller.BeginInvoke(3000,
                out dummy, 
                new AsyncCallback(CallbackMethod),
                "The call executed on thread {0}, with return value \"{1}\".");

            Console.WriteLine("The main thread {0} continues to execute...", 
                Thread.CurrentThread.ManagedThreadId);

            // The callback is made on a ThreadPool thread. ThreadPool threads
            // are background threads, which do not keep the application running
            // if the main thread ends. Comment out the next line to demonstrate
            // this.
            Thread.Sleep(4000);

            Console.WriteLine("The main thread ends.");
        }
        
        // The callback method must have the same signature as the
        // AsyncCallback delegate.
        static void CallbackMethod(IAsyncResult ar) 
        {
            // Retrieve the delegate.
            AsyncResult result = (AsyncResult) ar;
            AsyncMethodCaller caller = (AsyncMethodCaller) result.AsyncDelegate;

            // Retrieve the format string that was passed as state 
            // information.
            string formatString = (string) ar.AsyncState;

            // Define a variable to receive the value of the out parameter.
            // If the parameter were ref rather than out then it would have to
            // be a class-level field so it could also be passed to BeginInvoke.
            int threadId = 0;

            // Call EndInvoke to retrieve the results.
            string returnValue = caller.EndInvoke(out threadId, ar);

            // Use the format string to format the output message.
            Console.WriteLine(formatString, threadId, returnValue);
        }
    }
}
开发者ID:.NET开发者,项目名称:System.Runtime.Remoting.Messaging,代码行数:73,代码来源:AsyncResult.AsyncDelegate

输出:

The main thread 1 continues to execute...
Test method begins.
The call executed on thread 3, with return value "My call time was 3000.".
The main thread ends.

示例3: BinaryOp

//引入命名空间
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.Runtime.Remoting.Messaging;

public delegate int BinaryOp(int x, int y);

class Program {
    static void Main(string[] args) {
        BinaryOp b = new BinaryOp(Add);
        IAsyncResult iftAR = b.BeginInvoke(10, 10, new AsyncCallback(AddComplete), "Main() thanks you for adding these numbers.");
        Console.ReadLine();
    }

    static void AddComplete(IAsyncResult itfAR) {
        AsyncResult ar = (AsyncResult)itfAR;
        BinaryOp b = (BinaryOp)ar.AsyncDelegate;
        Console.WriteLine("10 + 10 is {0}.", b.EndInvoke(itfAR));
        string msg = (string)itfAR.AsyncState;
        Console.WriteLine(msg);
    }

    static int Add(int x, int y) {
        Console.WriteLine("Add() invoked on thread {0}.", Thread.CurrentThread.GetHashCode());
        Thread.Sleep(5000);
        return x + y;
    }
}
开发者ID:C#程序员,项目名称:System.Runtime.Remoting.Messaging,代码行数:30,代码来源:AsyncResult.AsyncDelegate


注:本文中的System.Runtime.Remoting.Messaging.AsyncResult.AsyncDelegate属性示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。