Type '<typename>' cannot implement interface '<interfacename>' because it declares '<eventsignature>' which has a return type

A class or structure attempts to implement an interface that declares an event that returns a value.

Visual Basic does not currently support declaring events that return values.

Error ID: BC30945

To correct this error

• Remove the Implements statement from the class or structure definition, or implement a different interface.

See Also

Concepts

Events and Event Handlers

Implements Keyword and Implements Statement

Reference

Implements Statement