SPItemKey Class
SharePoint 2010
Encapsulates information that identifies a list item.
Namespace:
Microsoft.SharePoint.Workflow
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Available in Sandboxed Solutions: Yes
Available in SharePoint Online
The SPItemKey class encapsulates information that can be used to identify a list item, including items from a list that has an external data source. For example. an instance of this type can be used to retrieve a list item by calling the GetListItem(SPList, SPItemKey) method of the WorkflowContext class.