Conversion operators cannot convert from a type to its base type

A conversion operator is declared with a return type from which the parameter type derives.

At compile time, Visual Basic considers a predefined conversion to exist from any reference type to any type in its inheritance hierarchy, that is, any type from which it derives or which derives from it. Such a conversion might fail at run time, but the compiler cannot predict run-time results, so it allows any such conversion to compile.

Because the compiler considers this conversion to be already defined, it does not allow you to redefine it.

Error ID: BC33026

To correct this error

• Remove this operator definition entirely. It is already predefined.

See Also

Tasks

How to: Define an Operator

How to: Define a Conversion Operator

Concepts

Operator Procedures

Reference

Operator Statement