Name
Implements Keyword
Syntax
Implementsinterfacename.interfacemember
-
interfacename
Use: Required
Type: String literal
The name of the interface being implemented by a class
-
interfacemember
Use: Required
Type: String literal
The name of the interface property, function, procedure, or event that is being implemented by a class
Description
Indicates that a class member provides the implementation of a member defined in an interface
Rules at a Glance
The
Implements
keyword can only be used in a class module in which theImplements
statement has been used to define an abstract base class that the class is to implement.The
Implements
keyword follows the property, function, procedure, or event definition, and must be on the same line.The class member implementing the interface member must be of the same type (property, function, procedure, or event) as the interface member, and its argument list and, in the case of functions and properties, return type must also be identical to that of the interface member.
Class members must implement all of the members declared in the interface.
Example
See the example in the Implements Statement entry.
VB .NET/VB 6 Differences
The
Implements
keyword is new to VB .NET. This means that the implementation of a property, function, procedure, or event does not have to use the name defined by the interface. This modifies the VB 6 practice, which requires that class members that implement an interface definition have the forminterfacename
_membername
.VB 6 does not ...
Get VB .NET Language in a Nutshell now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.