SPWorkItem.ItemId property

Gets the item ID of a list item when a work item must be correlated with a specific list item. This is an optional property, used for working with list items.

Namespace:  Microsoft.SharePoint
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

public int ItemId { get; }

Property value

Type: System.Int32
Returns the item ID for a list item associated with a work item object.