backgroundworker

In a WPF app, I am using a BackgroundWorker to periodically check for a condition on the server. While that works fine, I want to pop a MessageBox notifing the users if something fails during the check. Here's what I have: public static void StartWorker() { worker = new BackgroundWorker(); worker.DoWork += DoSomeWork; worker.RunWorkerAsync(); } private static void DoSomeWork(object sender, DoWorkEventArgs e) { while (!worker.CancellationPending) { Thread.Sleep(5000); var isOkay = CheckCondition(); if(!isOkay) MessageBox.Show("I should block the main window"); } } But this MessageBox does not

I have written a sample console application to test backgroundworker using one of the examples posted here in Stackoverflow. I have a backgroundworker which start with the main method but its ending in the middle of the operation if I press enter because I have written a console.readkey in the main method. But I want it to wait till the backgroundworker has finished doing the job then exit the application. This is my code. class Program { private static BackgroundWorker worker = new BackgroundWorker(); private event EventHandler BackgroundWorkFinished; static void Main(string[] args) { worker

I'm modifying a windows form to allow data to be loaded in the background while the UI remains responsive. The data takes noticeable time to both retrieve and bind. Ideally, I would do both in the background, but there is some ambiguity about what kind of UI updates I should be doing in the background (as in outside the main thread). A solid example that shows data retrieval and data binding in the background would be very helpful. The retrieval can, and should, be pushed off to a background thread--but there's some patterns to put it all in place. Basically you'll start a background thread to

I'm not sure if I'm doing this correctly, but I have the following code that I am using (click button1, do the _DoWork). The question is this: how do I call the UI to get the values of textbox1 and textbox2 as they cannot be called as they are on a different thread. Should I be using dispatchers? private void button1_Click(object sender, RoutedEventArgs e) { if (textBox1.Text == "") { MessageBox.Show("Please enter a username and password", "Error", MessageBoxButton.OK, MessageBoxImage.Warning); } else { bw.DoWork += new DoWorkEventHandler(bw_DoWork); bw.RunWorkerAsync(); } } private void bw

One of the nice things about MVVM is the testability of the ViewModel. In my particular case, I have a VM that loads some data when a command is called, and its corresponding test: public class MyViewModel { public DelegateCommand LoadDataCommand { get; set; } private List<Data> myData; public List<Data> MyData { get { return myData; } set { myData = value; RaisePropertyChanged(() => MyData); } } public MyViewModel() { LoadDataCommand = new DelegateCommand(OnLoadData); } private void OnLoadData() { // loads data over wcf or db or whatever. doesn't matter from where... MyData = wcfClient

I have a background worker. Before I invoke the worker I disable a button and make a gif visible. I then invoke the runworkerasync method and it runs fine until comleteion. On the 'RunWorkerCompleted()' I get a cross thread error. Any idea why? private void buttonRun_Click(object sender, EventArgs e) { if (comboBoxFiscalYear.SelectedIndex != -1 && !string.IsNullOrEmpty(textBoxFolderLoc.Text)) { try { u = new UpdateDispositionReports( Convert.ToInt32(comboBoxFiscalYear.SelectedItem.ToString()) , textBoxFolderLoc.Text , Properties.Settings.Default.TemplatePath , Properties.Settings.Default