Databases
StackOverflow2013
Postsdbo
POMonitoring Progress in Parallel.ForEach
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POMonitoring Progress in Parallel.ForEach
    primarykey
    data
    text
    <p>Attempting to monitor progress of a Parallel.ForEach loop I have tried the suggestion put forward in <a href="https://stackoverflow.com/questions/3807041/checking-status-of-parallel-foreach-loop">this question</a> but unfortunately I have still been unable to accomplish what I wanted.</p> <p>Basically the first problem I ran into when I attempted the implementation suggested (using a timer) was that the Parallel.ForEach method is a blocking call and hence the timer-tick callback was not occurring.</p> <p>So I tried putting the Parallel.ForEach loop inside of a background worker thread. Which did infact allow for the timer-tick event to occur but my counter value is never updated until the ForEach operation is complete.</p> <p>Here is the basic idea of the code (with the backgroundworker).</p> <pre><code>private StockList _StockListToProcess = null; private static Int64 ItemsProcessed = 0; private System.Windows.Threading.DispatcherTimer _timer = null; private System.ComponentModel.BackgroundWorker _backWorker = null; progressBar1.Minimum = 1; progressBar1.Maximum = this._StockListToProcess.Count; MainWindow.ItemsProcessed = 0; this._timer = new System.Windows.Threading.DispatcherTimer(); this._timer.Interval = TimeSpan.FromMilliseconds(100); this._timer.Tick += timer_Tick; this._timer.Start(); this._backWorker = new System.ComponentModel.BackgroundWorker(); this._backWorker.DoWork += delegate(object o, System.ComponentModel.DoWorkEventArgs args) { Parallel.ForEach(this._StockListToProcess, new ParallelOptions() { MaxDegreeOfParallelism = 5 }, (Stock stock) =&gt; { MyWebServiceClient serviceClient = new MyWebServiceClient (); MyWebServiceClient.ResponseEnum result = (MyWebServiceClient .ResponseEnum)serviceClient.SetProductPricing(token.LoginName, token.LoginPassword, token.SiteID.ToString(), stock.ProductCode, stock.ProductPrice); System.Threading.Interlocked.Increment(ref MainWindow.ItemsProcessed); }); this._timer.Stop(); }; private void timer_Tick(object sender, EventArgs e) { progressBar1.Value = MainWindow.ItemsProcessed; } </code></pre> <p><strong>What am I missing?</strong></p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USMaxim Gershkovich
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POMonitoring Progress in Parallel.ForEach
      1. USGregB
      1. VTFavorite
    2. VO
      singulars
      1. POMonitoring Progress in Parallel.ForEach
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POMonitoring Progress in Parallel.ForEach
      1. USvtortola
      1. VTFavorite
    1. COany solution with full source code ?
      singulars
      1. POMonitoring Progress in Parallel.ForEach
      1. USKiquenet
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload