How To Use Interfaces In Business Central

Dynamics 365 Business Central

An interface in Business Central defines a set of methods that codeunits can implement without containing any logic themselves.
Business Central interfaces were introduced in 2020 as a way to extend functionality without events, offering benefits like abstraction, decoupling, and scalability.
To understand how to use an interface, it is recommended to start by using an existing one and following the necessary steps.
The article provides an example using an interface in the E-Document Core application, involving implementing the interface, creating methods, and extending an enum.
Setup and testing in Business Central involve creating an E-Document Service, Workflow, Document Sending Profile, and assigning the profile to a customer.
An example of calling an interface is shown in the "E-Document Subscription" codeunit in the E-Document Core app, where the interface is called with specific lines of code.
The key steps to using an interface include identifying, implementing, and extending the interface within Business Central to add custom functionality.
The article concludes with a mention of another post on sending emails in Business Central for further exploration.

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