CODEWITHSUNDEEP
c#winformsprogress-barbackgroundworker
Pooh
Pooh

Reputation: 17

Background worker progress percentage

I am adding string values to the listbox from List<>. I want to calculate Progress Percentage in ReportProgress method.please help me to calculate progress percentage. I have written 0 in first parameter of ReportProgress method. I want to replace that 0 with progress percentage.

Here is my code.

private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
     List<string> result = new List<string>();
     var found = obj.getFiles();

     foreach (var item in found)
     {
         if (item.Contains("SFTP:") || item.Contains("ERROR:"))
         {
             result.Add(item);

             (sender as BackgroundWorker).ReportProgress(0, item);
         }
         else
             (sender as BackgroundWorker).ReportProgress(0);
         System.Threading.Thread.Sleep(1000);

     }
     e.Result = result;
}

private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    if (e.UserState != null)
        listBox1.Items.Add(e.UserState);

    progressBar2.Value = e.ProgressPercentage;
}

Upvotes: 0

Views: 1333

Answers (1)

PJRobot
PJRobot

Reputation: 1416

Foreach is not necessarily the best iteration for this application. Use a for-loop and use the index to calculate the progress based on the size of found. 

     for (int i = 0; i < found.Count; i++)
     {
         int progress = (int)(((float)(i + 1) / found.Count) * 100);
         if (found[i].Contains("SFTP:") || found[i].Contains("ERROR:"))
         {
             result.Add(found[i]);

             (sender as BackgroundWorker).ReportProgress(progress, found[i]);
         }
         else
             (sender as BackgroundWorker).ReportProgress(progress);
         System.Threading.Thread.Sleep(1000);    
     }

Upvotes: 1

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