Call this member function to set the field to a Null value.
void SetFieldValueNull( int nIndex ); void SetFieldValueNull( LPCTSTR lpszName );
The index of the field in the recordset, for lookup by zero-based index.
The name of the field in the recordset, for lookup by name.
C++ NULL is not the same as Null, which, in database terminology, means "having no value."
For related information, see the topics "Field Object" and "Value Property" in DAO Help.