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POReportProgress doesn't call progressChanged with tasks in c#
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  1. POReportProgress doesn't call progressChanged with tasks in c#
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    copied!<pre><code> private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e) { int currentProgress=-1; while (currentProgress&lt;length) { currentProgress=Worker.progress; backgroundWorker1.ReportProgress(currentProgress); Thread.Sleep(500); length = Worker.UrlList.Count; } } private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e) { int ix = e.ProgressPercentage; progressBar1.Value = ix; lblText.Text =ix+" %"; } </code></pre> <p>I wrote a program to download page sources by reading a file have about 1000 URLs. so I used Tasks to download pages async. here <code>Worker.progress</code> is the currently executed URL amount. though the debuger hits the <code>backgroundWorker1.ReportProgress(currentProgress);</code> it never enter to the <code>backgroundWorker1_ProgressChanged</code>. </p> <pre><code> private void StartButton_Click(object sender, EventArgs e) { t.makeUrlList(inputFile); backgroundWorker1 = new BackgroundWorker(); backgroundWorker1.WorkerReportsProgress = true; backgroundWorker1.DoWork += backgroundWorker1_DoWork; backgroundWorker1.ProgressChanged += backgroundWorker1_ProgressChanged; backgroundWorker1.RunWorkerAsync(); t.RunTasks(); Application.Exit(); } </code></pre> <p>background worker initializes when start button clicks...</p> <p>here is where my tasks are created....</p> <pre><code>public void RunTasks() { if (numOfTasks &gt; UrlList.Count) numOfTasks=UrlList.Count-1; Task[] t = new Task[numOfTasks]; int j = 0; while ( j &lt; UrlList.Count-1) { for (int i = 0; (i &lt; t.Count())&amp;&amp;(j&lt;UrlList.Count-1); i++) { try { if (t[i].IsCompleted || t[i].IsCanceled || t[i].IsFaulted) { t[i] = Task.Run(() =&gt; FindWIN(j)); j++; progress = j; } } catch (NullReferenceException ex) { t[i] = Task.Run(() =&gt; FindWIN(j)); j++; progress = j; } } } } </code></pre>
 

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