backgroundworker

I'm a self-taught novice experimenting with the Rijndael encryption algorithm , I've previously got it to work very well, but since trying to get the encryption to run on a background worker to free-up the the form for the user I've ran into numerous issues. Firstly I tried just placing the byval's I used in my previous code into the background worker, but I got an error with it not being compatible -- Specifically the ByVal Direction As CryptoAction . So to be clear, I was trying something like this: Private Sub bw_DoWork(ByVal sender As Object,ByVal strInputFile As String, ByVal

My program.cs calls the mdi parent frmMain. frmMain then opens different child forms based on user action. All the processing logic is written in BusinessLogic.cs. frmMain at load calls the methods of BusinessLogic.cs to initially populate the data. The child forms too call BusinessLogic to fetch data and process it. I'd like to do all this through a BackGroundWorker ie the frmMain calls the (say) StartBGWorker() method of BusinessLogic.cs and this method creates a backgroundworker for this specific call, calls the Do_work event, does the fetching & processing and closes when done. I'm at a

I am a beginner with WPF and trying a home project to become familiar with the technology. I have a simple form where the user selects an image file, I then display EXIF data along with a thumbnail of the image. This is working fine but when I select a RAW image file (~9 MB) there can be a slight delay while the thumb loads, so I thought I could use the BackgroundWorker to decode the image and the user can view the EXIF data, then when the image has been decoded it is displayed. The BitmapSource object is declared in the BackgroundWorkers DoWork method: worker.DoWork += delegate(object s,

I am new to ruby and thought it would be a great idea to rebuild a simple chat program I made in C#. I am using Ruby 2.0.0 MRI (Matz’s Ruby Implementation). The problem is I want to have I/O for simple server commands while the server is running. This is the server that was taken from the sample. I added the commands method that uses gets() to get input. I want this method to run as a thread in the background, but the thread is blocking the other thread. require 'socket' # Get sockets from stdlib server = TCPServer.open(2000) # Socket to listen on port 2000 def commands x = 1 while x == 1

Which parts of the communication with TWAIN can be put into another thread, e.g. a BackgroundWorker? Or: Is it possible to split the loop that handles the image transfer? Some scanner drivers scan all images before returning to the calling application which forces the application to handle all images at once. This results in e.g. OutOfMemoryException or weird behavior in my WPF application when suddenly all events (raised after every scanned image) have to be handled at once. Additionally the application hangs until the transfer was completed. I am using TwainDotNet: http://code.google.com/p

I have a call to a method that returns a UIElement that I call using the Dispatcher , below is the code. However the return value of the Dispatcher invoke is always NULL, any ideas? void backgroundWorker_DoWork(object sender, DoWorkEventArgs e) { var slides = (IList<UIElement>)e.Argument; var bmpSlides = new List<UIElement>(); var imageService = new ImageService(); int count = 0; foreach (UIElement slide in slides) { object retVal = slide.Dispatcher.Invoke( new ThreadStart(() => imageService.GenerateProxyImage(slide))); bmpSlides.Add(imageService.GenerateProxyImage(slide)); _backgroundWorker