Draw String in Progress Bar using c#

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Dear all, I am using bellow codes to upload files, everything works perfect except drawing progress value in Progress Bar.

void ftp_ProgressChanged(object sender)
 {
    if (InvokeRequired)
    {
       BeginInvoke(new Progress(ftp_ProgressChanged), sender);
       return;
     }
    FileUpload ftp = sender as FileUpload;
    int prgVal = Convert.ToInt32(ftp.Progress);
    lblUpStatus.Text = string.Format("Uploaded [{0}] {1}% {2}",    ftp.fileSize(ftp.UploadedSize), prgVal, ftp.fileSize(ftp.UpSpeed));
    pbar.Value = prgVal;
    pbar.PerformStep();
    pbar.CreateGraphics().DrawString(prgVal.ToString(), new Font(FontFamily.GenericSerif, 12), Brushes.Red, new PointF(5, 2)); //Runs but i can't see Red Color in exact location (start of progress bar)
 }

the last statement runs successfully but i can't see the red color string in progress bar as the location is exact and correct.
I know it draws but I can't see that, any ideas please?

Posted 25-Apr-11 1:45am

Abdul Rahman Hamidy

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Sergey Alexandrovich Kryukov 25-Apr-11 11:32am

Create graphics! Oh, not again...
--SA

1 solution

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OriginalGriff · Answer 1 · 2011-04-25T02:19:00

Solution 1

Instead of that, try handling the ProgressBar Paint event: if you don't then the change will cause an invalidate, which will paint over your text...

In addition, you are responsible for Disposing every Graphics object you create:

pbar.CreateGraphics().DrawString(prgVal.ToString(), new Font(FontFamily.GenericSerif, 12), Brushes.Red, new PointF(5, 2));

Will cause a problem when it runs out of handles - which will happen a lot sooner than the Garbage collector gets round to disposing them for you!

Posted 25-Apr-11 2:19am

OriginalGriff

Comments

Sergey Alexandrovich Kryukov 25-Apr-11 11:32am

Again... OK, the answer gets my 5.
--SA

Abdul Rahman Hamidy 26-Apr-11 23:23pm

thanks for your answer, that is only a sample i shown, but I did not find OnPaint Event of Progress Bar. any ideas please?

Abdul Rahman Hamidy 27-Apr-11 2:41am

to my answer, I think i have create a custom progressBar and then override onPaint method, thanks for the answer.