Extending the K2 platform

Developers can extend the standard functionality of the K2 platform in many different ways. This section covers the various extension points that are available on the K2 platform.

Extension Area	Extension point	Description
Extending Processes/Workflows	Custom Inline Functions	Create custom Inline Functions that will be exposed in the Context Browser in the workflow design tools.
	Custom K2 SmartWizards	Create custom workflow designer wizards that will help users configure workflow steps. In previous versions of K2, it was possible to create custom wizards using a SDK or a Visual Studio template. This functionality is deprecated and it is recommended to use the SmartWizards approach instead
	Using Custom Windows Workflow (WF) Activities in a K2 Server Event	Use Custom Windows Workflow (WF) activities in server events in a workflow
	Writing Custom Code in workflows when using K2 for Visual Studio	Write code in server events that execute on a K2 server, or customize the generated code that is contained workflow items
	Customizing Forms Generation Client Event Forms	Customize the generated ASP.NET pages when using the Forms Generation Client Event Wizard.
Extending SmartObjects	Custom SmartObject Service Brokers	Build Custom Service Brokers to expose various systems as K2 SmartObjects. If K2 does not provide a standard Broker (also known as an "adapter" or "connector") for a specific technology, you can write your own custom Service Brokers to interact with those systems by using SmartObjects.
Extending K2 Server with custom components	Adding custom schedules to the K2 Scheduler	Create custom scheduled tasks for specific dates, specific days of the week, specific times during the month or for specific intervals.
	Custom Logging Extensions	Create custom logging output targets so that K2 log output can be written to a non-standard target.
	How to add a 3rd-party event recorder to the K2 blackpearl Server	Allows for external or custom events to be raised on a K2 server, which in turn can be used by Notification Providers to perform actions in response to those events.
	Custom Notification Providers	Create custom notification providers that will execute some code in response to an event on the K2 platform
	Creating a Custom User Manager	Custom user managers can be used in the K2 platform to provide authentication and role resolution for a custom identity store or one that is not supported by K2 out of the box
K2 smartforms	Developers can extend K2 smartforms by creating custom Themes, custom Fonts and custom Controls. Extending SmartForms is covered in the SmartForms Developer Reference

When extending the K2 platform, consider using community components like the Visual Studio Projects templates for K2 Extensions to help speed and simplify development tasks, or browse the K2 market to see if a community member has already provided an extension that suits your requirements.

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