I've got a WPF application with a status bar. <StatusBar Grid.Row="1" Height="23" Name="StatusBar1" VerticalAlignment="Bottom"> <TextBlock Name="TextBlockStatus" /> </StatusBar> I'd like to display text there and switch to the hourglass Wait cursor when I do a small amount of work. This code will ...
I want to set the Text of a TextBlock in my StatusBar before making the user wait for a short moment while my program does a little bit of work. Aparently, instead of doing a nice little function like this (which does not work): Function Load(ByVal Id As Guid) As Thing Cursor = Cursors.Wait TextBlockStatus.Text = "Loading..." ...
Hi All, I am writing a windows application that runs a sequence of digital IO actions repeatedly. This sequence of actions starts when the user click a "START" button, and it is done by a background worker in backgroundWorker1_DoWork(). However, there are occasions when I get the "This backgroundworker is currently busy......." error ...
I have a simple UserControl for database paging, that uses a controller to perform the actual DAL calls. I use a BackgroundWorker to perform the heavy lifting, and on the OnWorkCompleted event I re-enable some buttons, change a TextBox.Text property and raise an event for the parent form. Form A holds my UserControl. When I click on som...
Hello, In my DoWork() function I register with our sip server. Then I have to wait for a response back. However, the response I get is received in another event. However, before I am able to check the flag in the DoWork() the DoWork() has all ready finished and the response comes after. I am trying to find a way to wait in the DoWork(...
I have a background thread that performs I/O operations (keeping an index up to date). But in addition to that several clients access the server's hard disk and I want these accesses as fast as possible. So I thought, it would be nice, if the indexing thread is only running when the I/O load is low. Is there a way to figure this out? I...
I am developing a website using Google App engine and Django 1.0 (app-engine-patch) a major part of my program has to run in the background and change local data and also post to a remote url... can sumone suggest an effective way of doin this... ...
In my windows forms applications I have a class that extends a backgroundworker, let's call it ExtendedBGW1.cs in my form class I declare it like a member variable so I have scope for the entire class like so: public partial class Main : Form { #region private_variables ExtendedBGW1 ebgw1; Later on in the forms constructor I ...
I have a background worker running a long database task. i want to show the progress bar while the task is running. Somehow the background worker won't report the progress of the task. This is what i have: BackgroundWorker _bgwLoadClients; _bgwLoadClients = new BackgroundWorker(); _bgwLoadClients.WorkerReportsProgress = true; _bgw...
Hello, C# 2008 SP1 I am using the background worker If one of the conditions fails I will set e.cancel to true, and assign the string to the e.result. Everything works there. However, when the workCompleted fires, I test for the e.Result and I get an exception "e.result throw an exception of type systeminvalidoperation". I guess I c...
With the help of the BackgroundWorker, I created an opacity animation for some form. There's only one tiny issue with this approach but I can't understand where is the problem. The animation speed is configurable and even if the speed value is very high, sometimes the animations is very, very slow, for some odd reason... The "slow anim...
Currently working with Oracle, but will also need a solution for MS SQL. I have a GUI that allows users to generate SQL that will be executed on the database. This can take a very long time, depending on the search they generate. I want the GUI/App to responsive during this search and I want the user to be able to cancel the search. ...
I'm close to releasing a rails app with the common networking features (messaging, wall, etc.). I want to use some kind of background processing (most likely Bj) for off-loading tasks from the request/response cycle. This would happen when users invite friends via email to join and for email notifications. I'm not sure if I should just...
I'm building a simple recipe search engine with Ruby and Sinatra for an iPhone app, using RabbitMQ for my message queue. I'm looking around and finding a lot of different implementation choices for background processes, but most of them either implement custom message queue algorithms or operate as Rails plugins. What's out there in te...
I need to make RunWorkerAsync() return a List<FileInfo>. How can I return an object from a background worker? ...
This is the setup I have, this code works properly private void butGo_Click(object sender, EventArgs e) { threadCreateImages.RunWorkerAsync(); } private void threadCreateImages_DoWork(object sender, DoWorkEventArgs e) { PatientToHL7MSHManager tvPatientToHL7MSHManager = new PatientToHL7MSHManager(); tvPatientToHL7MSHManager.LoadB...
Hi all, I've got the following code: void ReferenceManager_DoWork(object sender, DoWorkEventArgs e) { try { // Get the raw data byte[] data = this.GetData(IvdSession.Instance.Company.Description, IvdSession.Instance.Company.Password); // Deserialize the list List<T> deseriaizedList = null; ...
I have the following code for population a ListView from a background thread (DoWork calls the PopulateThread method): delegate void PopulateThreadCallBack(DoWorkEventArgs e); private void PopulateThread(DoWorkEventArgs e) { if (this.InvokeRequired) { PopulateThreadCallBack d = new PopulateThreadCallBack(this.PopulateTh...
Hi, I am setting the DataContext of an object in the completed method of a background worker thread. For some reason, I get an error saying: Cannot modify the logical children for this node at this time because a tree walk is in progress pointing to the Chart1.DataContext=allDates line. What does a tree walk is in progress mean? I'...
Hello, I use backgroundworker objects to preform some async and threading where needed. Every once in awhile when I run the backgroundworker it stalls in the middle of running and doesn't finish. It usually does this when I am running more then 1 backgroundworker at the same time. What I want to do when it stalls is cancel the operatio...