Re: Image FromStream GDI+ Error with PictureBox

The stream is remaining open. However, I was unaware that the memory
stream becomes "currupt" once the bitmap is disposed. However, in this
case, I am simply trying to display one image without disposing of
either, and I still get the error. I have even tried using "FromFile",
and it will throw the error once the image tries to draw on the
PictureBox. If, however, I clone the bitmap and try to display the
clone, all is well.

My question then would be, if the methods I am using to cache images
are not working (by caching the file streams which are small, rather
than caching the entire image which is large once decompressed), how
can I cache the images in a small footprint manner so that I do not
have to retrieve them from the file system every time I want to display
them. I need speed when switching from one image to another, so reading
from the file system is not a solution. I thought by having the file
streams cached in memory, I would work it out, but obviously this is
causing problems in GDI+.

The even stranger thing is, I have this same caching technique in
another object model that we use in production. It works 99% of the
time, but then gives that error sometimes when it tries to paint. I
created a workaround by recreating the image controls whenever this
happens, but it is a hack.

So, what would you recommend to cache images in a small footprint for
fast display?

Thanks,
Matthew

.

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