Re: Cycling between images increases memory usage

From: Bob Powell [MVP] (bob_at__spamkiller_bobpowell.net)
Date: 05/09/04 

Date: Sun, 9 May 2004 13:23:50 +0200

Ahh, I see.

I will run a test myself to see what the effect is. Maybe PictureBox has a
leak. It's my least favourite control and the easiest to write a
replacement for so that's an option.

I'm glad you enjoy my site. 

-- 
Bob Powell [MVP]
Visual C#, System.Drawing
Image transition effects, automatic persistent configuration and
design time mouse operations all in April's issue of Well Formed
http://www.bobpowell.net/wellformed.htm
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"Scytrax" <anonymous@discussions.microsoft.com> wrote in message
news:9D27A085-BA98-4298-A711-20ED45AF0F25@microsoft.com...
> Hi Bob.
>
> I read your faq recently and realized the importance of disposing images.
That handled another problem I was having in the same application. Thanks.
>
> However, when cycling images in the picture box, I cannot dispose of the
image because I keep looping through the images and so I need all images to
be displayed more than once.
>
> I do  something like the following (pseudo code):
>
> int counter = 0;
> Image images[] = new Image[5];
> images[0] = Image.FromFile("image1");
> images[1] = Image.FromFile("image1");
> images[2] = Image.FromFile("image1");
> images[3] = Image.FromFile("image1");
> images[4] = Image.FromFile("image1");
> this.Timer1.Start();
>
> onTimerTick:
>
> this.PictureBox1.Image = this.images[counter++];
> if(counter == this.images.Length)counter = 0;
>
> In theory, this should not cause any memory problems, right?
>
> I have been testing my program again during the night and after running
app. 6 hours, I only had an increase of about 200K. So maybe I don't have a
problem anymore. However, I would still like a confirmation that the general
procedure as described above should not cause any memory problems.
>
> Thanks for being a great help to your fellow coders, Bob!
>
> Anders

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