public StudentModel GetOneStudentById(string studentId)
        {
            DataTable dt = new DataTable();

            if (studentId.Equals(string.Empty) || studentId.Equals(""))
            {
                throw new ArgumentOutOfRangeException();
            }
            StudentModel studentModel = new StudentModel();

            using (SqlCommand command = new SqlCommand())
            {
                dt = GetMultipleQuery(StudentStringsSql.GetOneStudentById(studentId));
            }

            foreach (DataRow ms in dt.Rows)
            {
                studentModel = StudentModel.ToObject(ms);
            }

            return(studentModel);
        }