asynchronous c#

I created a WinForm test project: The interface is as follows:Set up:Here's the code:usingSystem;usingSystem.Collections.Generic;usingSystem.ComponentModel;usingSystem.Data;usingSystem.Drawing;usingSystem.Linq;usingSystem.Text;usingSystem.Threading;usingSystem.Threading.Tasks;usingSystem.Windows.Forms;namespaceasynccallbackdemo{ Public Partial classForm1:form { PublicForm1 () {InitializeComponent (); Objmycal=ExecuteTask; } //define a delegate Public Delegate intMycalculator (intN

: task. Start (); 6: For (int i = 0; i 7: { 8: Console.WriteLine ("Running in Main thread."); 9: Thread.Sleep (500); Ten: } 11: : Console.read (); 13:} If you are passing a parameter to a thread, the overload provided by the task constructor can pass in an argument of type object: "Hello World"); 2:task. Start (); Here is the threading method with the parameter: void Taskmethodwithparameter (object param)

Using system.threading;using system;namespace consoleapplication4{public class Program {static void Main (ST Ring[] (args) {try {String str = "excuting"; Mydel del = new Mydel (Method); Callwithtimeout (DEL,1200,STR); Console.WriteLine ("Success"); } catch (Exception) {Console.WriteLine ("Fail"); }} static void Method (String str) {Console.WriteLine (str); Thread.Sleep (1000); } public delegate void Mydel

Run the following code:Static voidMain (string[] args) {Task T=tasktest ();}Private Static AsyncTask tasktest () {awaitDoWork (); Console.WriteLine ("tasktest");}Private Static AsyncTask DoWork () {Console.WriteLine ("Hello world!"); for(inti =0; I 3; i++) { awaitTask.delay ( +); Console.WriteLine ("working ... {0}", i); }}The results of the operation are as follows:Conclusion:1. Async methods are marked async2. The method marked async must use the await keyword, with the emphasis on

* sent some data. In this method, Zp_nettransthread object would check * The Sending-queue, and send more data to buffer. * * @param wsended */void zp_nettransthread::some_data_sended (Qint64 wsended) {g_mutex_sta.lock (); G_bytessent + = Wsended;g_secsent + = Wsended;g_mutex_sta.unlock (); Qtcpsocket * psock = qobject_cast2.2.5 Other JobsAfter the transfer is terminated, a certain cleanup is performed. For multi-threaded transmissions, the most important thing is to ensure the lifetime of each

Flytcpframework originated from a popular C # asynchronous TCP communication library on the Internet. I have made some sorting and extended functions, and added the file transfer function, A msdn-style manual is created. Class diagram:Usage: Download the source code and open the source code solution. The solution contains four items:Flytcpframework: Class LibraryPpclient: PDA client demoPpserver: Server

In C #, use iframe and js to Implement Asynchronous Image Upload, Place the page for uploading images in iframe, use iframe to jump to another page, and submit the images to the server on this page without refreshing the homepage, after the submission is successful, use a script (callback function) to display the uploaded image on the home page. Image selection page Add. aspx Image Upload processing pag

C # using jquery Ztree to implement tree structure display _ Asynchronous data loading Jquery-ztree Download Address: https://github.com/zTree/zTree_v3 Jquery-ztree Number Structure Demo page: http://www.treejs.cn/v3/demo.php For a detailed explanation of Ztree, see the Demo page and the Ztree help demo. Here is a brief explanation of one of the examples I used (directly on the key code): To load node

When an event is triggered, the method for subscribing to the event is executed in the thread that triggers the event. That is to say, the method for subscribing to this event is synchronously executed in the thread that triggers the event. Therefore, there is a problem: if the method to subscribe to an event takes a long time to execute, the thread that triggers the event is blocked, and the method execution is completed for a long time. In this way, not only the execution of subsequent subscri

May 1 was at home for a while CodeI tried to improve and think of the LAN chat tool I wrote last summer. Now I can see that the code I wrote was unsightly. the most incredible thing is that I used "multithreading" to process network requests, now I think the asynchronous method should be used. Main Design Brief Description The left part indicates the client process, and the right part indicates the server process. the client has fewer steps than th

, define IPEndPoint serverIP to indicate the IP address and port of the server Socket, In order to communicate between ports, next, you can try CommunicateSocket. beginConnect (serverIP), after the connection is successful, you can send and receive data, CommunicateSocket. beginSend (), CommunicateSocket. beginReceive (). Some asynchronous methods have two implementation methods, such as BeginAccept () and AcceptAsync (). What are the differences bet

MyDelete (PrintTreeViewNode );Dele. BeginInvoke (this. tvDevc. Nodes, new AsyncCallback (AfterMyMothod), null );}# Endregion# Region callback function for asynchronous parameter passingPublic void AfterMyMothod (IAsyncResult result){AsyncResult async = (AsyncResult) result;MyDelete DelegateInstance = (MyDelete) async. AsyncDelegate;Bool rt = DelegateInstance. EndInvoke (result );If (xztasks){If (rt){MessageBox. Show ("delayed loading successful! ","

SmtpClient SmtpServer =NewSmtpClient ("smtp.163.com"); Smtpserver.port= -; Smtpserver.credentials=NewSystem.Net.NetworkCredential ("Feiyang","1234"); Smtpserver.enablessl=true; MailMessage Mail=NewMailMessage (); Mail. from=NewMailAddress ("[email protected]");//and the corresponding mail above. To.add ("[email protected]"); Mail. Subject="Member Registration Information";//Header mail. Subjectencoding=Encoding.UTF8; Mail. Body=Mailboby; Mail. Priority= System.Net.Mail.MailPriority.High;//Messag

long time, resulting in poorIn this case, asynchronous calling is necessary.Asynchronous calls do not block threads, but plug the calls into the thread pool. The main thread or UI thread of the program can continue to execute.The asynchronous call of the delegate is implemented through BeginInvoke and EndInvoke.Asynchronous call:Copy codeThe Code is as follows: using System;Using System. Threading;Public d

A new asynchronous operations library has been added to the. NET Framework 4.5, but is not available in the. NET Framework 4.0. At this time unavoidably faced with the choice, in the end is to upgrade the whole solution or not to use it. If your software has not yet been released, it is recommended to use the. NET Framework 4.5, but if you have already published and do not want users to upgrade the framework to the. NET Framework 4.5, there is also a

There are a number of ways to perform a function on another thread, and here's a discussion of the BeginInvoke method using delegate, which has the advantage of calling a function in another thread without spending too much. The following is an example of an asynchronous execution method using delegate: Class Program {static void Main (string[] args) {Object syncobject = new Object (); Test test = new test (); int index = 0; AutoR

When our program is running, we call the asynchronous logic a, which cannot be translated into synchronization (such as animation, download progress, etc.)Instead, we need to wait for asynchronous logic A to finish, and then execute other logical B.Then there is an urgent need to synchronize the asynchronous transfer!parameter bool: True if the initial state is s

Implementation principle: The use of WebClient for bulk download tasks, simple simulation thunder download effect!Don't say much nonsense, first look at the disguise effect:The specific implementation steps are as follows:1. New Project: Winbatchdownload2. First build a Windows Form: frmbatchdownload, Load event frmbatchdownload_load3. Place a button: Btnstartdownload, single event Btnstartdownload_click4. Place a datagridview:dgvdownload.5. The specific code is as follows:Using system;using sys

specific work code //...Progress report worker. ReportProgress ((i+1) * ( -/count), "Progress Information"); //Thread HibernationThread.Sleep ( -); } } } //Progress Report Private voidWorker_progresschanged (Objectsender, ProgressChangedEventArgs e) {//Here The progress information can be displayed in the windowE.userstate As String//... } //Work Completion Status Private voidWorker_runworkercompleted (Objectsender,

The content of this article is only for ASP. NET 2.0 or later is applicable, and the content is very simple. It should not be stored on the homepage, but it is found that there are many developers who do not know it. It is necessary to remind you. So please forgive me if you are familiar with Treeview. Nowadays, Ajax is popular. Many third-party controls of various types of trees support asynchronous loading.The members of our project team usually lo