EF执行SQL语句

使用EF框架的过程中，有时需要执行SQL语句来提升查询性能，如执行存储过程，进行复杂查询等。下面介绍如何在EF中执行SQL语句。

1.EF执行 SQL查询

string sql = "SELECT sStuID,sStuName FROM [dbo].[Students] WHERE sClassID = @classID";
var student = db.Database.SqlQuery>( sql, new SqlParameter("@classID ", classID));
var result = student.Skip((pageIndex - 1) * pageSize).Take(pageSize).ToList();

2.EF执行SQL操作

string sql = "DELETE FROM [dbo].[Students] WHERE sClassID = @ classID  AND sStuID=@stuID";
SqlParameter[] args = new SqlParameter[2];
                args[0] = new SqlParameter("@classID", classID);
          args[1] = new SqlParameter("@stuID", stuID);
int result = db.Database.ExecuteSqlCommand(sql,args);