SqlParameter 存储过程

 public static int AddStudent(Student stu)
        {
            int num = 0;

           //关键是存储过程
            string sql = "addNewStudent";
            SqlParameter p=new SqlParameter();
            p.ParameterName="@newId";
            p.SqlDbType=SqlDbType.Int;
            p.Direction=ParameterDirection.Output;
            bool sex=stu.StuSex=="男"?true:false;
            SqlParameter[] param={new SqlParameter("@name",stu.StuName),
                                 new SqlParameter("@sex",sex),
                                 new SqlParameter("@birthday",stu.StuBirthday),
                                 new SqlParameter("@hight",stu.StuHeight),
                                 new SqlParameter("@weight",stu.StuWeight),
                                 new SqlParameter("@cid",stu.ClassId),
                                 new SqlParameter("@money",stu.Money),
                                 new SqlParameter("@password",stu.StuPwd),
                                 new SqlParameter("@memo",stu.Remark),
                                 new SqlParameter("@rid",stu.RoleId),p};
            num = SQLHelper.ExecuteNonQuery(SQLHelper.ConnectionStr, CommandType.StoredProcedure, sql, param);
            if (num > 0)
            {
                return int.Parse(p.Value.ToString());
            }
            else
            {
                return -1;
            }
        }