c# async method

Basic reading: http://www.cnblogs.com/jesse2013/p/async-and-await.htmlFAQ read: http://www.cnblogs.com/heyuquan/archive/2012/11/30/async-and-await-faq.html#3467736Summarize:The 0.async retouching method can only be void,task or task1. Methods that use async do not necessaril

Let's look at the example:1 void Pagepaint () 2 {3 Console.WriteLine ("Paint Start"), 4 paint (), 5 Console.WriteLine ("Paint End"), 6} 7Suppose there is a method for this page layout that renders the head, the body, and the bottom in turn, the header and the bottom are fixed content, and the body needs additional requests.Here with sleep Analog network delay, rendering method is actually the si

."); } Public Async voidAsynctask () {stringx =awaitAsyncTask2 (); ShowMsg (x); Thread.Sleep ( +); ShowMsg ("Asynctask.end"); } Public Asynctaskstring>AsyncTask2 () {return awaitTask.run (() = { //simulate a process with a very large workloadShowMsg ("run.. Begininvoke.start."); Random Rd=NewRandom (); Thread.Sleep (Rd. Next ( the,6000)); ShowMsg ("run.. Begininvoke.end."); return "return value: As

Since Nodejs is processed asynchronously, sometimes we want to synchronize the data out of MySQL, and finally we need to use this extension in processing logic;This extension avoids multiple levels of callbacks;Installation method:NPM Install AsyncHow to use: 1, parallel multiple functions in parallel execution1 varAsync = require (' async ');2 3 Async.Parallel (4 [5 function(callback) {6 //Query Database code here7Daouser.getu

Once, we may have used thread. When the main thread is running. A new thread is opened to run the new method.Today to see someone sent me a piece of code to find a not know the await, but also feel very familiar with the look, feel is the thread that the thing, check the next, found a simple way to realize multi-threaded asynchronous programming.(Ps:framework at 4.5 or more talent enough oh ~)。 Console.WriteLine ("Exit Async

public class MyClass{Public MyClass (){Displayvalue (); There's no blocking.System.Diagnostics.Debug.WriteLine ("MyClass () End.");}Public task{Return Task.run (() ={for (int i = 0; i {NUM1 = num1/num2;}return NUM1;});}Public async void Displayvalue (){Double result = await Getvalueasync (1234.5, 1.01);//This will open a new thread to process the Getvalueasync task, then return the method immediatelyAll cod

Async and await are introduced in C # 5.0. These two keywords will make it easier for you to write asynchronous code. Look at an example: public class MyClass {public MyClass () { displayvalue ();//There's no blocking here. System.Diagnostics.Debug.WriteLine ("MyClass () end."); } Public task An asynchronous Method Displayvalue () that

Write a snippet of code to show colleagues the sequence of code execution for these 2 syntactic sugars: Class Program {static void Main () {MSG ("Begin"); Displayvalue (); MSG ("End"); Console.read (); #region Async Test public static async task Code Execution Results: 1. Threads: 1 Begin 2. Thread: 1 into displayvalue 3. Thread: 1 into getvalueasync 4. Thread

I have written two articles on asynchronous programming, which can be entered into c#~ asynchronous programming and c#~ asynchronous programming in project useEach version of. NET has its own master-push technology, like a delegate in. NET1.1, a generic in. NET2.0 in. NET3.0, and Dynimac in the linq,.net4.0 in. The main thing in NET4.5 is asynchronous programming, and the simplest way to implement asynchron

( ), content:$ ("#content"). Val ()},datatype: "JSON", success:function (data) {$ (' #resText '). empty (); Empty all contents of restext var html = '; $.each (data, function (Commentindex, comment) {html + = ' Incidentally, the $.each () function:The $.each () function differs from the each () method of the JQuery object, which is a global function that does not manipulate the jquery object, but instead takes an array or an object as the 1th paramet

"); }　　Thread ID Output 3 is the same reason (http://www.cnblogs.com/mushroom/p/4575417.html):There is talk that Async does not have to use the thread, there is a need to say, from a single aspect are right, also is wrong. The above source code is simple analysis, the specific async internal will involve thread context switch, thread reuse, scheduling and so on. Want to deepen the classmate can study

defines two different executor, and the second sets the processing method of the pool when Max size is reached, and specifies the prefix for the thread name. 2, the use of custom executor: /** * Asynchronous Tasks * @author Xu */@Component public class Asynctask {protected final Logger Logger = L Oggerfactory.getlogger (This.getclass ()); @Async ("Mysimpleasync") public futureis to put the above custom

thread.thread Id of Foo () Is:5, current thread is the thread pool thread.thread Id of Foo () Is:7, current thread is the thread pool thread.thread Id of Foocallback () Is:3, current thread is the thread pool thread.thread Id of Foo () Is:3, current thread is the thread pool thread.thread Id of Foocallback () Is:4, current thread is the thread pool thread.thread Id of Foocallback () Is:6, current thread is the thread pool thread.thread Id of Foocallback () Is:5, current thread is the thread poo

example: "218.108.242.108" strarea_ip[1] IP address region information String No for example: "Hangzhou, Zhejiang" The following is the IP parameter that is passed in to obtain the region to which it belongs: According to the third party website (WebService provider), to obtain the IP address of the client by crawling the Internet IP address of the computer on this website.Of course, if that day this site changed the domain name or does not exist, this me