public CourseRubricObject(DataColumnCollection columns, DataRow row)
{
this.id = columns.Contains("id") ? Convert.ToInt32(row["id"]) : -1;
this.courseId = columns.Contains("course_id") ? Convert.ToInt32(row["course_id"]) : -1;
this.courseName = columns.Contains("course_name") ? Convert.ToString(row["course_name"]) : "-";
this.rubricName = columns.Contains("rubric_name") ? Convert.ToString(row["rubric_name"]) : "-";
}