public IRecordNavigator FindIncomplete(IFieldNavigator FieldNav)
 {
     return this.FindIncomplete(true, FieldNav);
 }
        public IRecordNavigator FindIncomplete(bool UpdateOnly, IFieldNavigator FieldNav)
        {
            long nextcol = 0;

            long lRecord = this.Pos ; long lField = FieldNav.Number;  string lName = "";

            _success = false;

            this.Success = ParentQuery.FindIncomplete(this.Buffer, lRecord, lField, lName, UpdateOnly);

            if (this.Success)
            {
                this.Pos = lRecord;
            }

            return this;
        }