backgroundworker

background-fu pluggin unable to run ./script/generate background

I'm following this rdoc: http://rdoc.info/projects/ncr/background-fu and can't run ./script/generate background after installing background-fu as a Rails plugin: ./script/plugin install git://github.com/ncr/background-fu.git I'm getting following error: Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no...

.NET Backgroundworker - Is there no way to let exceptions pass back normally to main thread?

Hi, QUESTION: Re use of .NET Backgroundworker, is there not a way to let exceptions pass back normally to main thread? BACKGROUND: Currently in my WinForms application I have generic exception handle that goes along the lines of, if (a) a custom app exception then present to user, but don't exit program, and (b) if other exception t...

Proper way to Dispose of a BackGroundWorker

Would this be a proper way to dispose of a BackGroundWorker? I'm not sure if it is necesary to remove the events before calling .Dispose(). Also is calling .Dispose() inside the RunWorkerCompleted delegate ok to do? public void RunProcessAsync(DateTime dumpDate) { BackgroundWorker worker = new BackgroundWorker(); worker.RunWor...

C# update GUI continuously from backgroundworker.

I have created a GUI (winforms) and added a backgroundworker to run in a separate thread. The backgroundworker needs to update 2 labels continuously. The backgroundworker thread should start with button1 click and run forever. class EcuData { public int RPM { get; set; } public int MAP { get; set; } } p...

BackgroundWorker Help needed

I have code that does a web-service request. While doing this request I need a progress-bar to be moving independently. My problem is that I just need to say run a progress update every 1 or 2 seconds and check to see if progress of the request has been completed. NetBasisServicesSoapClient client = new NetBasisServicesSoapClient(); ...

What are the different ways of implementing multithreading in .net

I have been fighting with multi threading for few days. I dont understand what are different ways of multithreading. I have read little bit about backgroundWorker, little bit about creating an object of thread. Yesterday I saw in delegate example to implement multithreading by calling BeginInvoke. I dont understand are these differe...

Can't get my head around background workers in .NET

I have wrote an application that syncs two folders together. The problem with the program is that it stops responding whilst copying files. A quick search of stack-overflow told me I need to use something called a background worker. I have read a few pages on the net about this but find it really hard to understand as I'm pretty new to p...

WPF BackgroundWorker process RunWorkerCompleted is called multiple times, why?

I have some code that starts a background process for search in my WPF application: private void RunSearch(SearchArguments arguments) { _getSearchResults.DoWork += GetSarchFromDb; _getSearchResults.RunWorkerCompleted += SearchFinished; _getSearchResults.RunWorkerAsync(arguments); } RunSearch is exicute...

Throwing an exception from a BackgroundWorker which calls an async. method (Webrequest)

Hi, My main application creates a new BackgroundWorker X the DoWork event handler of X calls a method Y of my controller. This method creates the WebRequest (async.) instance and the callback using AsyncCallback. When the response arrives the callback method Z gets called and the content will be analyzed. It can happen that the respons...

WPF Statusbar Updates - help, I seem to be going round in circles

I seem to be going round in circles. I have a WPF application that has a main ribbon window with a status bar. When you navigate to a "view" a user control is displayed as the content of the main window. The view has a ViewModel which handles retrieving data from the database and the View's datacontext is set to the ViewModel. What I ...

Using WCF to expose underlying process

I think I must be a little dull because I'm having so much difficulty with this. I use WCF for pretty much everything in-house, it's the most appropriate technology. I have a new Silverlight 3 app that is connecting to the WCF service and that's working fine. Where the problem begins is: Because of the expense in creating the objects...

Spawning BackgroundWorkers

We have a business case that would be perfect for multiple BackgroundWorkers. As an example, we have a form with a "Save" button on it. Normally we would run all the save commands (Save is an example) synchronously and then close the form. We would like to now split the work onto separate threads using backgroundworker. We will loop th...

System architecture: simple approach for setting up background tasks behind a web application -- will it work?

I have a Django web application and I have some tasks that should operate (or actually: be initiated) on the background. The application is deployed as follows: apache2-mpm-worker; mod_wsgi in daemon mode (1 process, 15 threads). The background tasks have the following characteristics: they need to operate in a regular interval (e...

backgroundworker+wpf -> frozen window

-progressbar always 0% -the window is froozen (while DoWork r.) -if System.threading.thread.sleep(1) on - works perfectly whats the problem? private void btnNext_Click(object sender, RoutedEventArgs e) { this._worker = new BackgroundWorker(); this._worker.DoWork += delegate(object s, DoWorkEventArgs args) { ...

Synchronizing while using Backgroundworker and an asynchronous HttpWebRequest

As described above I am using a Backgroundworker, which is requesting data from NET. This request is done asynchronously (BeginGetResponse). When a response arrives a method is called to handle the recived data etc... How could I synchronize the background worker and the asynchronous HttpWebRequest? Is it stupid to use an asynchronous h...

Implementing auto-save in WPF / MVVM / NHibernate

My client likes programs like Microsoft OneNote where changes are saved automatically, and he can choose to discard when he explicitly wants to do so. I will have to implement some undo functionality, but I'll figure that out some other time. With NHibernate, I suppose I can call ISession.Update on every single property / binding change...

Can a Backgroundworker proceed working when it reaches the "...Completed" event handler

Hi, as described in the title. My backgroundworker is doing its job...finishes the first part and calls the ...Completed event handler. Can I tell here my backgroundworker to proceed with another job by doing DoWork -= OldJob DoWork += NewJob also DoWorkCompleted -= OldJobCompleted DoWorkCompleted += NewJobCompleted Is this possible...

BackgroundWorker and foreach loop

I have to process a loop with backgroundworkers. Before I start a new loop iteration I need to wait until the provious backgroundworker has finished. A while loop inside my foreach loop with isbusy flag doesn's seem like a good idea to me. How should I design this loop so it waits for the bg-worker to end before iterating the loop p...

Background worker not working right

I have created a background worker to go and run a pretty long task that includes creating more threads which will read from a file of urls and crawl each. I tried following it through debugging and found that the background process ends prematurely for no apparent reason. Is there something wrong in the logic of my code that is causing ...

BackgroundWorker not working with TeamCity NUnit runner

I'm using NUnit to test View Models in a WPF 3.5 application and I'm using the BackgroundWorker class to execute asynchronous commands.The unit test are running fine with the NUnit runner or ReSharper runner but fail on TeamCity 5.1 server. How is it implemented : I'm using a ViewModel property named IsBusy and set it to false on Backg...