Areas in application to look into is where input/output happens either for text controls, text files or database text fields. If you use database with text column you must verify that these are unicode fields (Ntext etc). Otherwise VS uses unicode by default in most cases, usually Utf-8. For streamreaders/writers you can specify encoding, default is utf8, but you can also tell them to use Encoding.Default which is "the operating system's current ANSI code page", and for streamreaders detectEncodingFromByteOrderMarks can also be used when applied.

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