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Updating listbox using a thread in

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The aim of this tutorial is to provide insight into the tools available for separating asynchronous and multi threaded work from the UI.The general idea is to separate the logical work out into a separate class(es), instantiate that class (initializing it with any state data required by the work operation), and then get the result, and update the GUI via a callback, in a nice, decoupled manner.The test app attached shows three threads running independently and all update the GUI frequently without blocking the GUI.// this variable will hold some text set by the worker thread public string Message = ""; // Create a worker thread and then add items to the List Box from the // UI thread public void Do Threading() public void Update List Box() // The delegate that’s called from the worker thread // to update the List Box public void Worker Update(object sender, Event Args e) As you can see from the code you need to inform the worker thread about the delegate to use for GUI updates.This is another simple example that will help you to make your applications more responsive.Anyone writing smart client applications will eventually run into a situation where some work must be performed asynchronously on a background thread.The gist of the point was that rather than have the background thread directly update the UI directly using , you should try and favour having the background thread raise an event (of which contains the data used to update the UI), have the form subscribe to this event, and thus have the form update itself when the data from the background thread becomes available.This would mean that the operation knows nothing of the UI, making the program more maintainable, and the operation itself reusable in the future.

With my bg Thread classes (yes there are three predefined ones), you can simply use this construction: public partial class Thread Test2 : Form { private bg Thread _bg Thread; ... From the eventhandler you can directly update the GUI. The first class, bg Thread1 class, only uses the Int Ptr’s usable with Send Message to transfer data.//start and link the thread private void btn_bg Thread Test_Click(object sender, Event Args e) void _bg Thread_bg Thread Event(object sender, bg Thread. //in your exit function you MUST dispose existing threads if (_bg Thread ! So you can transfer a maximum of two integers or so.In a previous article on async and await, I showed a very simple example of how to run some code asynchronously.The problem with this application is that is feels a little sluggish for the user and constantly locks up, or gives the impression that it has crashed which means users have been trying to kill the application when really, it is processing a lot of work and the UI has become unresponsive. Below is a screen shot of a very simple winforms app. When you load it up, you press the button and the application counts to 5,000,000. Simple Application for an Async and Await Example " data-medium-file="https://stephenhaunts.files.wordpress.com/2014/10/async-application.jpg? w=287" data-large-file="https://stephenhaunts.files.wordpress.com/2014/10/async-application.jpg? w=150 150w" sizes="(max-width: 287px) 100vw, 287px"/ When you load up the application and click the button, nothing happens, and about a minute later, the label updates to say “Counter = 5000000”.Whilst I was in the code base, I wanted to try and improve some of this unresponsiveness by moving code out into tasks and asynchronously updating the UI. Whilst the application is counting, the user interface becomes completely unresponsive. This is the issue I have been facing in this application that I need to maintain.After some experiments I got a background thread class that is very easy to use. As the control and the Message Window is part of the GUI thread, there is no need to use Invokes.