Working with workflow activities
Workflow activities are the fundamental building blocks of SharePoint workflows. In SharePoint, a workflow activity is represented by an implementation derived from the Activity class, in the System.Workflow.ComponentModel namespace, and encapsulates the properties, events, and execution logic of that workflow activity.
Creating workflow activities
You can create custom workflow activities that support additional functionality, such as reporting, error handling, and multiple output, in Nintex Workflow 2013. Custom workflow activities are derived from the ProgressTrackingActivity class, in the Nintex.Workflow.Activities namespace, which is in turn based on the Activity class and provides additional, Nintex-specific functionality.
For more information about creating custom workflow activities, see Creating workflow activities.
See Also
Concepts
Operations
Working with workflow activities