The FullTextKeyColumn property returns the identifier of the column selected for row identification for Microsoft Search.
object.FullTextKeyColumn
object
Expression that evaluates to an object in the Applies To list
Long
Read-only
HRESULT GetFullTextKeyColumn(LPLONG pRetVal);
Microsoft Search requires that a single column identify rows participating in an index that supports full-text query. The column designated must contain unique, nonnull values and must participate in a table's PRIMARY KEY constraint or UNIQUE index.
Use UniqueIndexForFullText to configure Microsoft Search full-text index key column use.