What Happens?

WHAT HAPPENS?
there is a follow message when compile windows exe (desktop)
ERROR CS2001: IMPOSSIBILE TROVARE IL FILE DI ORIGINE 'connection'
bad translate (impossible found file or origin 'connection')

I use only a SQLDesktop.dll in my project!!!

I have already compiled same project yesterday, but there is not problem.
I have make some changes/review , but only position of obj (text, label, button, ecc.)

From MSDN about error CS2001 - "A source file name was passed to the compiler, but could not be located. Check the spelling of the file name and the location of the file."

It seems as though the external compiler is looking for a file called connection.cs and not finding it. I have no idea what might cause this but I would check your source code for all instances of "connection" to see if this might point out the problem.

this is ok !?!?!

it is a bug???
i have resolving.

i have add a imagebutton with this image (png)

name of image is "Internet Connection Tools.png"

now i rename in "Internet.png" and it is OK!!!

is it a bug ????

Assuming that you assigned the name in the Designer then I suspect that the Designer in the IDE can't cope with spaces in filenames.