// Loads all the data into the page
protected void Page_Load(object sender, EventArgs e)
{
Page.Title = "Course Management";
if (!IsPostBack)
{
try
{
// Shows all the courses as none was selected
if (!string.IsNullOrEmpty(Request.QueryString["course"]))
{
selectedCourse = courseController.FindCourseById(int.Parse(Request.QueryString["course"]));
enrollmentCount = courseController.GetAllEnrollmentsForCourseAndBindToRepeater(selectedCourse, ref StudentsEnrolledRepeater);
unenrollmentCount = courseController.GetAllNotEnrolledStudentsForCourseAndBindToRepeater(selectedCourse, ref StudentsUnenrolledRepeater);
ViewState["SelectedCourse"] = selectedCourse;
if (!string.IsNullOrEmpty(Request.QueryString["unenrolledFirstName"]) && !string.IsNullOrEmpty(Request.QueryString["unenrolledLastName"]))
{
ShowSuccessMessage(string.Format("Student {0}, {1} successfully unenrolled from the {2} course.", Request.QueryString["unenrolledLastName"], Request.QueryString["unenrolledFirstName"], selectedCourse.Title));
}
else if (!string.IsNullOrEmpty(Request.QueryString["enrolledFirstName"]) && !string.IsNullOrEmpty(Request.QueryString["enrolledLastName"]))
{
ShowSuccessMessage(string.Format("Student {0}, {1} successfully enrolled int the {2} course.", Request.QueryString["enrolledLastName"], Request.QueryString["enrolledFirstName"], selectedCourse.Title));
}
}
// Shows the selected course
else
{
departmentController.GetAllDepartmentsAndBindToDropDownList(ref CourseDepartmentDropDown);
courseController.GetAllCoursesAndBindToRepeater(ref CoursesRepeater);
}
}
catch (DatabaseException ex)
{
ShowErrorMessage(ex.Message);
}
catch (Exception ex)
{
ShowErrorMessage("The system failed with the following message: " + ex.Message);
}
}
}