Hi!

I think the MSDN docs about interop doesn't state clearly enough that there
is a character encoding conversion automaticly done from Unicode to the
characterset for the computer during interop.

This got me really puzzled for a few days.

I've got a legacy C-application (dll) that takes in UTF-8 encoded strings in
an array of structs. I call that C-dll from C# which works fine, as long as
I use ansi characters, for example english. When sending in swedish
characters (where the utf-8 encoding becomes two bytes) such as ??? the
lowercase works fine, but the uppercase ??? simply comes out as invalid
utf-8 encoding of the character FF.

I solved it by doing the conversion of UTF-8 to bytes and when going back to
string used the encoder for "Default" and converting those bytes to a
"unicode-string". That way, when the interop converts the string from
Unicode to "Default", the UTF-8 once again surfaces.

So my suggestion is to update the MSDN doc to state this conversion clearly
enough.

Thanks,

John Allberg