[Mono-winforms-list] (Rich)TextBox: Maximum reasonable string length?

[Sponsel, Carsten (ext)]

Hi Rolf,

yes, the TextBox in .NET is not so fast either, but I'm satisfied with the performance .NET's RichTextBox. 
It's good that you prefer to make things work, although I'm pretty happy with the latest mono version. All controls I use work really good (except TreeView and RichTextBox). I think you're not far from the point you should think about some cosmetic and performance issues to increase the acceptance of mono. But that's my extern opinion. My client is not very happy about that (Rich)TextBox issue, but that's not high prio resp. not so important I think.
Mono's progress in the past year was amazing - today I think that it was a good decision to choose it in early 2006.

Thanks,
Carsten

> -----Ursprüngliche Nachricht-----
> Von: Rolf Bjarne Kvinge [mailto:rolflists at ya.com] 
> Gesendet: Freitag, 15. Juni 2007 12:30
> An: Sponsel, Carsten (ext); mono-winforms-list at lists.ximian.com
> Betreff: RE: [Mono-winforms-list] (Rich)TextBox: Maximum 
> reasonable string length?
> 
> 
> 
> > -----Original Message-----
> > From: mono-winforms-list-bounces at lists.ximian.com [mailto:mono-
> > winforms-list-bounces at lists.ximian.com] On Behalf Of 
> Sponsel, Carsten
> > (ext)
> > Sent: viernes, 15 de junio de 2007 8:00
> > To: mono-winforms-list at lists.ximian.com
> > Subject: [Mono-winforms-list] (Rich)TextBox: Maximum 
> reasonable string
> > length?
> > 
> > Hi!
> > 
> > My application does P/Invoke-Calls into some native code, which
> > asynchronosly calls back and pass some string value. That 
> works fine,
> > even for large strings. But when I want the string to be 
> displayed in a
> > System.Windows.Forms.(Rich)TextBox, the performance 
> dramatically goes
> > down the larger the string gets. Usually I get strings 
> between 1 MB and
> > 5 MB length. The mono application seems to hang - but it 
> needs ages to
> > just display the text (writing to console works fine) :-(   I used
> > (Rich)TextBox.AppendText and (Rich)TextBox.Text property.  Is that a
> > known issue? Is the (Rich)TextBox not supposed to display such large
> > strings? Do I have to use another fast method? s there some sort of
> > control that can handle it?
> > 
> 
> The textbox isn't designed for displaying large strings, not 
> even on Windows
> (try opening a 5MB file in Notepad, it'll block a while as 
> well). On Windows
> I think the RichTextBox has a somewhat better performance 
> (unless I remember
> wrong, opening the same file with Wordpad is somewhat 
> faster), but Mono uses
> the same implementation for both. There's no faster way of 
> doing it, the
> controls have to read all the text, split it in lines, figure out line
> lengths, etc., and our focus right now isn't about making 
> things faster, but
> making things work :) 
> 
> Rolf
>  
> > Thank you
> > Carsten
> > 
> > 
> > Mit freundlichen Grüßen
> > 
> > ASTRUM IT GmbH
> > Carsten Sponsel
> > Diplom-Informatiker (FH)
> > SW-Ingenieur
> > 
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> > Fax: +49 91 31 94 08-1 08
> > mailto:Carsten.Sponsel at astrum-it.de
> > 
> > 
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> > 
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> > Fax: +49 91 31 84 6787
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> > 
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