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copied!<p>I usually place any action that can (realistically) take more than a second or two into a separate task, something like:</p> <pre><code>public interface ITask { void ExecuteTask (ITaskExecutionContext context); void AfterSuccess(ITaskExecutionContext context); void AfterFailure(ITaskExecutionContext context); void AfterAbortion(ITaskExecutionContext context); } </code></pre> <p>I also have an abstraction for running such tasks:</p> <pre><code>public interface ITaskExecutor : IDisposable { void BeginTask(ITask task); void TellTaskToStop(); } </code></pre> <p>One of the implementations of this <code>ITaskExecutor</code> is using the <code>BackgroundWorker</code>:</p> <pre><code>public class BackgroundTaskExecutor : ITaskExecutor { public void BeginTask(ITask task) { this.task = task; worker = new BackgroundWorker (); worker.DoWork += WorkerDoWork; worker.RunWorkerCompleted += WorkerRunWorkerCompleted; worker.WorkerSupportsCancellation = true; worker.RunWorkerAsync(); } ... } </code></pre> <p>I heavily rely on the dependency injection and IoC to wire things together. In the presenter then I just call something like:</p> <pre><code>GoAndDontReturnUntilYouBringMeALotOfMoneyTask task = new GoAndDontReturnUntilYouBringMeALotOfMoneyTask(parameters); taskExecutor.BeginTask(task); </code></pre> <p>Cancel/abort buttons are then wired so they tell the task executor / task to abort.</p> <p>It's actually a bit more complex than presented here, but this is the general idea.</p>

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