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Type parameter '<typeparametername>' has the same name as a type parameter of an enclosing type

A type parameter of a generic type is declared with the same name as a type parameter of a containing generic type.

In the type parameter list of a generic type, each type parameter must have a name distinct from all of the following names:

  • Every other type parameter in the same type parameter list,

  • Every type parameter in the type parameter list of any containing generic type, and

  • The name of the generic type itself.

By default, this message is a warning. For information on hiding warnings or treating warnings as errors, see Configuring Warnings in Visual Basic.

Error ID: BC40048

To correct this error

  • Rename the type parameter to be distinct from every name cited in the list on this Help page.

See Also

Concepts

Generic Types in Visual Basic

Reference

Type List