I've installed Npgsql Data Provider for .net and I've executed
gacutil -i Npgsql.dll
as the user manual said, but I can't use the Dataset designer. When I add a TableAdapter to the designer, It ask me for a new connection, but the options are Access, MS Sql, or SQLite (other dataProviders that already i have installed). There's no option for PostgreSql. Also when I try to add a reference to Npgsql to my project, I have to search for the dll, It doesn't appear in the .Net tab of the "add a reference" menu.
What i'm missing?