Can't reuse old project with MySQL connections

Hello,

After loading my old project in VS2015 I see that namespace MySql.Data.MySqlClient isn't supported.

Then I have tried to find some MySQL staff in references. Nothing ... 

Then searching on web, I've found this link

https://dev.mysql.com/downloads/file/?id=463758

But installation of this package fails:

Help, please.

Thanks in advance.