C#•2y ago

Modifier for a class you want as a base class only and making not accessible to external assemblies

I have a base class for other classes:

public class ApiGetOutcome
{// stuff }

public class ApiGetOutcome
{// stuff }

public class ApiGetOutcome
{// stuff }

public class ApiGetOutcome
{// stuff }

and I inherit it thus:

public class ApiGetFileOutcome: ApiGetOutcome
{// stuff }

public class ApiGetFileOutcome: ApiGetOutcome
{// stuff }

public class ApiGetFileOutcome: ApiGetOutcome
{// stuff }

public class ApiGetFileOutcome: ApiGetOutcome
{// stuff }

These are all in a class library which accesses an API.

I don't want

ApiGetOutcome

ApiGetOutcome

ApiGetOutcome

ApiGetOutcome visible outside the library, only

ApiGetFileOutcome

ApiGetFileOutcome

ApiGetFileOutcome

ApiGetFileOutcome

I've messed around with

abstract

abstract

abstract

abstract and various modifiers, but can't seem to crack it. Would appreciate a steer!