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POCancel backgroundworker
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copied!<p>I have UI which displaying status of long-running operations (downloading some text files from ftp) . For my purposes I use backgroundworker and I can't cancel operation.</p> <pre><code>void worker_DoWork( object sender, DoWorkEventArgs e ) { try { int rowIndex = (int)e.Argument; //begin UI update StartWaitingBar(rowIndex); //get provider id cell GridViewDataRowInfo row = _proivderGridView.Rows[rowIndex]; GridViewCellInfo provIdCell = row.Cells[ "ProviderId" ]; var providerData = GetProviderData(Convert.ToInt32( provIdCell.Value)); var provider = ProviderFactory.CreateProvider(providerData); provider.Synchronize(); e.Result = rowIndex; } catch (Exception exception) { return; } } </code></pre> <p>And code for worker creation:</p> <pre><code> BackgroundWorker worker = new BackgroundWorker(); worker.DoWork += worker_DoWork; worker.RunWorkerCompleted += worker_RunWorkerCompleted; worker.WorkerSupportsCancellation = true; worker.RunWorkerAsync(args.RowIndex); _syncWorkers.Add(providerId,worker); ... var worker = _syncWorkers[providerId]; if(worker.IsBusy) { worker.CancelAsync(); } else { worker.RunWorkerAsync(args.RowIndex); } </code></pre> <p>Solution provided <a href="https://stackoverflow.com/questions/123661/net-how-to-wait-for-a-backgroundworker-to-cancel">here</a> seems not working for me beacuse it works for recurring operations (for which background worker is created, I suppose). Do I have to use threads(abort and join) for my purposes because I should provide possibilities for user to cancel long-running operation?</p> <p>Need your advice.</p> <p>Thanks in advance.</p>

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