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POHow to chain tasks within each thread
 

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    <p>I have a requirement for copying several hundred tables using bulkcopy. So far I got the following code.</p> <pre><code>// from UI main thread private void test1() { LimitedTaskScheduler scheduler = new LimitedTaskScheduler(4); TaskFactory factory = new TaskFactory(scheduler); foreach (DataRow row in tabList.Rows) // Loop over the rows. { string tabName = row[tabList.Columns["TableName"]].ToString(); factory.StartNew&lt;string&gt;( () =&gt; { Console.WriteLine("{0} on thread {1}", tabName, Thread.CurrentThread.ManagedThreadId); TableCopyer tc1 = new TableCopyer(); // pass progressbar and label into tc1 instance to update the progressbar and label tc1.Bar1 = bar1; tc1.L1 = l1; tc1.EntityCopy(AppInfo.SrcDBMSPath, AppInfo.DestDBMSPath, tabName, ""); return tabName; }); } } // inside TableCopier class private void OnSqlRowsCopied(object sender, SqlRowsCopiedEventArgs e) { try { int rowCopied = int.Parse(e.RowsCopied.ToString()); double result = (double.Parse(rowCopied.ToString()) / double.Parse(TotalRows.ToString())); int prsent = int.Parse(Math.Round((result * 100), 0).ToString()); SetProgressbar(prsent); } catch { throw; } } </code></pre> <p>LimitedTaskScheduler is coming from <a href="http://msdn.microsoft.com/en-us/library/ee789351.aspx" rel="nofollow">http://msdn.microsoft.com/en-us/library/ee789351.aspx</a></p> <p>My questions are</p> <ol> <li><p>How do I chain the tasks so that each will start only upon the finish of the prior task within each thread? I limited the max parallel thread to 4. I want to chain the tasks within the threads because the tasks being performed within a thread will reuse the same progressbar in a way one finishes and another starts. </p></li> <li><p>I have 4 progress bar painted on UI, bar1, bar2, bar3, bar4. How do I associate each progressbar with a particular thread so that the user can see 4 running progress at the same time?</p></li> </ol>
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    1. CONote: The progressbars are used to report the progress for each bulkcopy operation (per table). for example updated for every 5 thousand rows based on the NotifyAfter event. The user want to see the progress for each table/task.
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