Contains

var datatemp = from a in db.vw_ipos_kehutree
 orderby a.sx1_id
 select new { zd_id = a.zd_id,khdm=a.khdm ,khmc=a.khmc ,zzmc=a.zzmc ,qymc=a.qymc };

vw_ipos_kehutree为一个视图 在给datatemp加like查询时 

datatemp =datatemp.where(k=>k.khdm.Contains("dd"));这样就正确

如果

datatempdatatemp.where(k=>k.khdm.Contains(where));这样就报错（where为从前台传过来的字符串）错误明细是“Unknown column 'Extent1.khdm' in 'where clause'”