protected void Page_Load(object sender, EventArgs e)
 {
     //Pulling all data from course table and putting it in a DataTable
     _courseTable = _courseDao.PullData();
     if (!IsPostBack)
     {
         //Setting GridView data based off of DataTable
         GrdCourse.DataSource = _courseTable;
         GrdCourse.DataBind();
         ValidateRegistrations();
     }
 }