Ef执行Sql查询

Posted 2020-11-01 达者均为吾师

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 [email protected] ",new SqlParameter("@ID",id)).ToList();

 

3、结合linq查询

 

var model = (from p in db.userinfo.SqlQuery("select * from UserInfoes where [email protected]", 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 [email protected]", 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);