"java wildcard" to C#? -

how convert "java wildcards" c# format?

public abstract class aaa<t extends bbb<?>> extends ccc<t>{}  

my incorrect c# code

public abstract class aaa<t> : ccc<t> t : bbb<?>{} 

how convert bbb<?>

there similar question c# generic "where constraint" "any generic type" definition? not specific java wildcards. answer provided there you.

from answer, possible class signature be:

public abstract class aaa<t, tother> : ccc<t>     t : bbb<tother> {} 

generics in c# must have named type parameters if never plan use type explicitly/implicitly. , type parameters must named in identifier declaration of method/class/interface.

note possible constrain tother object types if desired using:

public abstract class aaa<t, tother> : ccc<t>     t : bbb<tother>     tother : object {}