Contains members that enable you to centrally control the workflow templates and instances across a site collection.
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
Use the class to centrally manage and control the running instances of workflows across a site collection.
Use the object to:
Start, run, or cancel workflows.
Return all the workflows currently running on a specific item.
Perform other workflow administration operations.
The class has no equivalent in the user interface. Through the Microsoft SharePoint Foundation user interface, users interact with the workflows running on items on an individual basis.