最简单的,给下拉菜单负值(是/否) ddlIsOverflow.Items.Insert( 0 , new ListItem( " 否 " , " 0 " ));//ddlIsOverflow是下拉菜单ddlIsOverflow.Items.Insert( 1 , new ListItem( " 是 " , " 1 " ));ddlIsOverflow.DataBind(); 应该没什么可说的,给最最最初学者吧,呵呵