public void addPrevCourses(ref courseDatabase crsDB, string nextSemester)
{
string line;
System.IO.StreamReader input = new System.IO.StreamReader(@"..\..\historyDB.in");
while ((line = input.ReadLine()) != null)
{
string username = line.Substring(0, 10).Trim().ToLower(); // Needed ToLower()
string courseNumStr = line.Substring(11, 2).Trim();
int courseNum = int.Parse(courseNumStr);
int loc = 14;
student std = stdLst.Find(s => s.username.Trim() == username);
for (int i = 0; i < courseNum; i++)
{
string crsID = line.Substring(loc, 10).Trim();
loc += 11;
string semester = line.Substring(loc, 3).Trim();
loc += 4;
string creditStr = line.Substring(loc, 4).Trim();
float credit = float.Parse(creditStr);
loc += 4;
string grade;
if ((line.Length - loc) >= 3)
{
grade = line.Substring(loc, 3).Trim().ToString();
}
else
{
grade = line.Substring(loc).Trim().ToString();
}
loc += 5;
if (semester == nextSemester)
{
course crs = crsDB.getCourse(crsID);
std.addClassToNext(crs);
crs.enrollUser(std);
}
else if (semester == "F14")
{
previousCourse pcrs = new previousCourse(username, crsID, semester, credit, grade);
std.addClassToCurrent(pcrs);
}
else
{
previousCourse currentCourse = new previousCourse(username, crsID, semester, credit, grade);
std.addClassToPast(currentCourse);
}
}
}
input.Close();
foreach (student std in stdLst)
{
std.calculateGPA();
}
}
private void viewEnrolledStdsClick(object sender, EventArgs e)
{
if (facSch.SelectedRows.Count == 0)
{
MessageBox.Show("Select a class from the schedule list",
"No class selected",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
else
{
string crsID = facSch.SelectedRows[0].Cells["Course ID"].Value.ToString();
course crs = crsDB.getCourse(crsID);
new admEnrolledStd(crs).Show();
}
}
public void changeTime(string crsID, string instructor, courseDatabase crsDB)
{
foreach (faculty fac in facLst)
{
if (fac.username == instructor.Trim())
{
foreach (course crs in fac.nextSemesterCourses)
{
if (crs.crsID.Trim() == crsID.Trim())
{
course curCrs = crsDB.getCourse(crsID);
crs.timeBlocks = curCrs.timeBlocks;
}
}
}
}
}
// For changing courses. Needs a direct access to user database
public void changeInstrutor(courseDatabase crsDB, string newInstructor, string oldInstructor, string crsID)
{
foreach (faculty fac in facLst)
{
bool newI = false;
bool oldI = false;
if (!newI)
{
if (fac.username.Trim() == newInstructor.Trim())
{
course crs = crsDB.getCourse(crsID);
fac.nextSemesterCourses.Add(crs);
newI = true;
}
}
if (!oldI)
{
if (fac.username.Trim() == oldInstructor.Trim())
{
foreach (course crs in fac.nextSemesterCourses)
{
if (crs.crsID == crsID.Trim())
{
fac.nextSemesterCourses.Remove(crs);
oldI = true;
break;
}
}
}
}
if (oldI && newI)
{
break;
}
}
}
// Event handlers
private void addCrsClick(object sender, EventArgs e)
{
int count = addCrsLst.Count;
if (count == 0)
{
MessageBox.Show("Select classes",
"No class selected",
MessageBoxButtons.OK,
MessageBoxIcon.Error);
}
else
{
foreach (string crsID in addCrsLst)
{
Dictionary <string, float> gradeDict = new Dictionary <string, float>()
{
{ "A", 4.0f },
{ "A-", 3.7f },
{ "B+", 3.3f },
{ "B", 3.0f },
{ "B-", 2.7f },
{ "C+", 2.3f },
{ "C", 2.0f },
{ "C-", 1.7f },
{ "D+", 1.3f },
{ "D", 1.0f },
{ "D-", 0.7f }
};
course crs = crsDB.getCourse(crsID);
bool preReq = true;
List <string> preReqLst = crs.preReqLst;
foreach (string courseID in preReqLst)
{
bool temp = false;
foreach (previousCourse pcrs in std.pastCrs)
{
if (courseID == pcrs.crsID.Substring(0, courseID.Length) && gradeDict.ContainsKey(pcrs.grade))
{
temp = true;
break;
}
}
if (!temp)
{
foreach (previousCourse pcrs in std.currentCrs)
{
if (courseID == pcrs.crsID.Substring(0, courseID.Length))
{
temp = true;
break;
}
}
if (!temp)
{
preReq = false;
break;
}
}
}
if (!preReq)
{
MessageBox.Show("You're missing prerequisites.", "Requirement", MessageBoxButtons.OK,
MessageBoxIcon.Error);
return;
}
validity v = std.isValidAdd(crs);
if (v.valid)
{
if (v.warning)
{
MessageBox.Show(crsID + "\n" + v.message, "Warning",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
// Add the course to the student
usrDB.addCrsToStd(crsID, "S15", ref crsDB, std);
// Update the course list and student schedule
foreach (DataGridViewRow row in crsLst.Rows)
{
if (row.Cells["Course ID"].Value.ToString().ToString() == crsID)
{
if (row.Visible)
{
crs = crsDB.getCourse(crsID);
row.Cells["Seats"].Value = crs.seats + " / " + crs.maxSeats;
DataTable table = (DataTable)stdSch.DataSource;
table.Rows.Add(crs.crsID, crs.title, crs.instructor, crs.credit, crs.getBlocks());
break;
}
}
}
}
else
{
MessageBox.Show(crsID + "\n" + v.message + "\n" + "The course was not added.", "Invalid add",
MessageBoxButtons.OK, MessageBoxIcon.Error);
continue;
}
}
crsLst.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.None;
crsLst.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells;
crsLst.DefaultCellStyle.WrapMode = DataGridViewTriState.True;
int width = crsLst.Columns["Schedule"].GetPreferredWidth(DataGridViewAutoSizeColumnMode.AllCells, true);
crsLst.Columns["Schedule"].AutoSizeMode = DataGridViewAutoSizeColumnMode.None;
crsLst.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.DisplayedCells;
crsLst.Columns["Schedule"].Width = width;
crsLst.ClearSelection();
for (int i = 0; i < crsLst.Rows.Count; i++)
{
crsLst.Rows[i].Cells["Add"].Value = null;
}
addCrsLst.Clear();
MessageBox.Show("The process completed.",
"Done",
MessageBoxButtons.OK,
MessageBoxIcon.Information);
}
}
