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Threading using BackgroundWorker class

Posted By:Jean Paul       Posted Date: September 28, 2010    Points: 25    Category: ASP.NET    URL: http://www.dotnetspark.com  

Introducing the BackgroundWorker class instead of using Thread class.


Instead of using Thread class for asynchronous operations we can use the BackgroundWorker class in .Net.

This class gives you much flexibility over Thread class.  The important events we should use are

DoWork and RunWorkerCompleted.  The DoWork event should be handled to process the core work of thread.

The RunWorkerCompleted event is called when the DoWork method is processed.


private void CodeSample()
            BackgroundWorker worker = new BackgroundWorker();
            worker.DoWork += new DoWorkEventHandler(worker_DoWork);
            worker.RunWorkerCompleted += new RunWorkerCompletedEventHandler(worker_RunWorkerCompleted);


        private object value;

        private void worker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
            if (value != null)
                // Process

        private void worker_DoWork(object sender, DoWorkEventArgs e)
            // Get value from a web service 
            value = GetValueFromWebService(); 
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