H hero_ Unregistered / Unconfirmed GUEST, unregistred user! 2002-11-21 #1 当数据库记录为空值时, str:=m_query.Recordset.Fields.Item['TestContent'].Value出错。 应该加上怎样的判断?
B bes96261 Unregistered / Unconfirmed GUEST, unregistred user! 2002-11-21 #2 if m_query.Recordset.Recordcount<>0 then str:=m_query.Recordset.Fields.Item['TestContent'].Value
H huawdg Unregistered / Unconfirmed GUEST, unregistred user! 2002-11-21 #4 if not m_query.Recordset.FieldByName('TestContent').IsNull then ........