I have an app in Windows Form using Oracle Data Provider, oracle version 12c. On Windows 7 all polish characters are ok, but after migration on Windows 10 some characters are ok, but some other are displaying as strange signs, for example
informujšca
except
informująca
Characters which are not display good: ą, ś, ź
In C# I set environment:
Environment.SetEnvironmentVariable("NLS_LANG", "AMERICAN_AMERICA.EE8ISO8859P2");//POLISH_POLAND.EE8MSWIN1250");
The only answer I found on internet is parameter which is commented, but unfortunately it's not working.