Visual Basic 2015 Unleashed

Splitting Method Definitions with Partial Methods

Another interesting feature is partial methods. The concept behind this feature is the same as for partial classes: Method implementations can be split across multiple parts. Partial methods have three particular characteristics: They must be Private methods, they cannot return values (that is, only Sub methods are allowed), and their bodies must be empty in the class in which methods are defined. Consider the following code, in which a class named Contact is split across partial classes and a partial method is defined:

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Public Class Contact    Public Property FirstName As String    Public Property LastName As String    Public Property EmailAddress As String    Public ...