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'<typename>' cannot inherit from <type> '<basetypename>' because it expands the access of the base <type> outside the assembly

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A class or interface inherits from a base class or interface but has a less restrictive access level.

For example, a Public interface inherits from a Friend interface, or a Protected class inherits from a Private class. This exposes the base class or interface to access beyond the intended level.

Error ID: BC30910

To correct this error

  • Change the access level of the derived class or interface to be at least as restrictive as that of the base class or interface.

    -or-

  • If you require the less restrictive access level, remove the Inherits statement. You cannot inherit from a more restricted base class or interface.

See Also

Concepts

Access Levels in Visual Basic

Reference

Class Statement (Visual Basic)

Interface Statement (Visual Basic)

Inherits Statement