The InPrimaryKey property exposes primary key participation for a Microsoft® SQL Server™ column.
object.InPrimaryKey
object
Expression that evaluates to an object in the Applies To list
Boolean
Read-only
HRESULT GetInPrimaryKey(LPBOOL pRetVal);
If TRUE, the referenced column is part of a PRIMARY KEY or UNIQUE key constraint defined on the table.
If FALSE, the referenced column is not part of a PRIMARY KEY or UNIQUE key constraint defined on the table.