fixing Bitmap "object in use elsewhere" exception

[Richard Arthur]

I periodically get an "Object in use elsewhere" exception in my code while
using Bitmaps. I am curious to find out if I lock on a bitmap, will that
remove this problem, or will I have to lock on the Bitmap before drawing it
on a canvas somewhere.

I find that this error usually happens if I have a bitmap, set it to the
background of a form or control, and then I continue to use the Bitmap (e.g.
get the bitmap's size, or extract information from it using Lockbits and
some unsafe code, etc.) I am just wondering if the OnPaint method of a
control locks on the bitmap, or if I must override that rougine and lock on
that bitmap before using it.

Thanks,

Richard Arthur