Conversion operators cannot convert from a derived type
A conversion operator is declared with a parameter type that derives from the return type.
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: BC33031
- Remove this operator definition entirely. It is already predefined.
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