private void cmdGo_Click(object sender, EventArgs e)
{
try
{
string id = GetString(txtCourseID);
string name = GetString(txtCourseName);
byte units = 0;
NList prereqs = new NList();
if (!Byte.TryParse(GetString(txtCourseUnits), out units))
{
units = 0;
}
foreach (object course in lbxPrereqs.Items)
{
prereqs.Append((Course)course);
}
Course cs = new Course(id,
name,
units,
cbxFall.Checked,
cbxWinter.Checked,
cbxSpring.Checked,
cbxSummer.Checked,
prereqs,
null);
mainDB.Add(id, cs);
mainDB.SaveDB();
mainDB.PopulateListBox(lbxCList);
}
catch (Exception ex)
{
MessageBox.Show(String.Format("Error creating course. {0}", ex.Message));
}
}
private void AddCourse(Course course, CourseDB term, ListBox lbx)
{
NList iter = course.Prereqs.Copy();
AcademicYear ay;
Course cs;
bool found;
// Check previous years for prereqs
for (int i = 0; i < yearIndex; ++i)
{
ay = plan[i];
for (iter.MoveFront(); iter.Index >= 0; iter.MoveNext())
{
cs = (Course)iter.Get();
found = ay.Fall.ContainsKey(cs.CourseID) || ay.Winter.ContainsKey(cs.CourseID) || ay.Spring.ContainsKey(cs.CourseID) || ay.Summer.ContainsKey(cs.CourseID);
if (found)
{
iter.Delete();
}
}
}
ay = plan[yearIndex];
// Check current year for prereqs
for (iter.MoveFront(); iter.Index >= 0; iter.MoveNext())
{
cs = (Course)iter.Get();
if (term == ay.Winter)
{
found = ay.Fall.ContainsKey(cs.CourseID);
}
else if (term == ay.Spring)
{
found = ay.Winter.ContainsKey(cs.CourseID) || ay.Fall.ContainsKey(cs.CourseID);
}
else if (term == ay.Summer)
{
found = ay.Spring.ContainsKey(cs.CourseID) || ay.Winter.ContainsKey(cs.CourseID) || ay.Fall.ContainsKey(cs.CourseID);
}
else
{
found = false;
}
if (found)
{
iter.Delete();
}
}
// Only add the course if it's prerequisites have been satisfied
if (iter.Length < 1)
{
term.Add(course.CourseID, course);
ay.SaveYear();
term.PopulateListBox(lbx);
}
}