EF中使用SQL语句或存储过程

1、无参数查询

var  model = db.Database.SqlQuery<UserInfo>( "select* from UserInfoes " ).ToList();

 

2、有参查询

var  model = db.Database.SqlQuery<UserInfo>( "select* from UserInfoes where id=@ID " , new  SqlParameter( "@ID" ,id)).ToList();

 

3、结合linq查询

 

var  model = ( from  p  in  db.userinfo.SqlQuery( "select * from UserInfoes where id=@ID" ,  new  SqlParameter( "@ID" , 1))  select  p).ToList();

 

4：EF原始查询单独表

 

model = db.userinfo.OrderByDescending(a => a.ID).Skip(10 * (当前页 - 1)).Take(10).ToList();

 

 

5，EF 执行存储过程或delete 删除语句

 

SqlParameter[] para =  new  SqlParameter[] {

new  SqlParameter( "@ID" ,id)

};

db.Database.ExecuteSqlCommand( "delete UserInfoes  where id=@ID" , para);

 

存储过程 删除，有几个参数，存储后面要带几个参数以逗号分隔

 

SqlParameter[] para =  new  SqlParameter[] {

new  SqlParameter( "@ID" ,id)

};

db.Database.ExecuteSqlCommand( "sp_Userinfos_deleteByID @ID" , para);