private void frmTeachers_Load(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
var teachers = (from c in db.Teachers select c).ToList();
cboState.DisplayMember = "state";
cboState.ValueMember = "state";
cboStateUp.DisplayMember = "state";
cboStateUp.ValueMember = "state";
var states = new[]
{
new { state = "VIC" },
new { state = "QLD" },
new { state = "SA" },
new { state = "TAS" },
new { state = "WA" },
new { state = "NSW" },
new { state = "NT" },
new { state = "ACT" },
};
cboState.DataSource = states;
cboStateUp.DataSource = states;
}
this.updateTeacher();
Clear();
}
public void updateMarks()
{
using (SchoolEntities db = new SchoolEntities())
{
var m = (from s in db.Students select new { s.SID }).ToList();
var n = (from c in db.Courses select new { c.CID }).ToList();
cboCIDEdit.DisplayMember = "CID";
cboCIDEdit.ValueMember = "CID";
cboCIDEdit.DataSource = n;
int cno = Convert.ToInt32(cboCIDEdit.Text);
var g = (from d in db.Student_Course where d.CID == cno select d).ToList();
dGVMarks.DataSource = g;
dGVMarks.Columns[3].Visible = false;
dGVMarks.Columns[4].Visible = false;
dGVMarks.Columns["SID"].ReadOnly = true;
dGVMarks.Columns["CID"].ReadOnly = true;
cboCIDAdd.DisplayMember = "CID";
cboCIDAdd.ValueMember = "CID";
cboCIDAdd.DataSource = n;
cboSIDAdd.DisplayMember = "SID";
cboSIDAdd.ValueMember = "SID";
cboSIDAdd.DataSource = m;
}
}
private void btnEdit_Click(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int cno = Convert.ToInt32(cboCIDEdit.Text);
int[] sid = (from c in db.Student_Course where c.CID == cno select c.SID).ToArray();
int sct = sid.Length;
for (int i = 0; i < sct; i++)
{
int studentid = sid[i];
Student_Course cou = (from c in db.Student_Course where c.CID == cno && c.SID == studentid select c).FirstOrDefault();
string markInput = dGVMarks.Rows[i].Cells[MarkCol].Value.ToString();
string output = val.valMark(markInput);
int markEd = Convert.ToInt32(markInput);
if (!(output == ""))
{
MessageBox.Show(output);
}
cou.Mark = markEd;
db.SaveChanges();
}
}
updateMarks();
}
private void btnAddMarks_Click(object sender, EventArgs e)
{
string mark = val.valMark(txtMarkAdd.Text);
if (!(mark == ""))
{
MessageBox.Show(mark);
}
using (SchoolEntities db = new SchoolEntities())
{
int sno = Convert.ToInt32(cboSIDAdd.Text);
int cno = Convert.ToInt32(cboCIDAdd.Text);
Student_Course course = (from c in db.Student_Course where sno == c.SID && cno == c.CID select c).FirstOrDefault();
if (course != null)
{
MessageBox.Show("Mark Exists Already. Cannot Add Marks.");
}
else
{
course = new Student_Course();
course.SID = sno;
course.CID = cno;
course.Mark = Convert.ToInt32(txtMarkAdd.Text);
db.Student_Course.Add(course);
db.SaveChanges();
MessageBox.Show("Mark Added.");
}
updateMarks();
}
}
public void refreshForm()
{
using (SchoolEntities db = new SchoolEntities())
{
var students = (from c in db.Students select c).ToList();
cboState.DisplayMember = "state";
cboState.ValueMember = "state";
cboStateUp.DisplayMember = "state";
cboStateUp.ValueMember = "state";
var states = new[]
{
new { state = "VIC" },
new { state = "QLD" },
new { state = "SA" },
new { state = "TAS" },
new { state = "WA" },
new { state = "NSW" },
new { state = "NT" },
new { state = "ACT" },
};
cboState.DataSource = states;
cboStateUp.DataSource = states;
}
}
public string validCID(string s)
{
using (SchoolEntities db = new SchoolEntities())
{
string output = "";
int value;
bool CIDisInt = int.TryParse(s, out value);
var list = (from c in db.Courses where c.CID == value select c).FirstOrDefault();
if (string.IsNullOrEmpty(s))
{
return(output = "Course ID cannot be Empty!");
}
if (!CIDisInt)
{
return(output = "Course ID must be Interger!");
}
if (list != null)
{
return(output = "ID exists already. Please check!");
}
return(output);
}
}
private void btnLogin_Click(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int uname;
string inputUname = txtUsername.Text;
bool isInt = int.TryParse(inputUname, out uname);
string pass = txtPassword.Text;
if (string.IsNullOrEmpty(txtUsername.Text) || string.IsNullOrEmpty(txtPassword.Text))
{
MessageBox.Show("Please type username and password.");
return;
}
if (!isInt)
{
MessageBox.Show("Please type integer for username.");
return;
}
if (cboUser.Text == "Teachers")
{
Teacher teacher = (from c in db.Teachers where c.TID == uname select c).FirstOrDefault();
if (teacher == null)
{
MessageBox.Show("Username cannot be found in the Teacher Table.");
return;
}
if (teacher.TID == uname && teacher.Password == pass)
{
new frmTeacherDash().ShowDialog();
}
else
{
MessageBox.Show("Wrong Username or Password for Teachers!");
return;
}
}
else
{
Administrator admin = (from c in db.Administrators where c.AID == uname select c).FirstOrDefault();
if (admin == null)
{
MessageBox.Show("Username cannot be found in the Admin Table.");
return;
}
if (admin.AID == uname && admin.Password == pass)
{
new frmAdminDash().ShowDialog();
}
else
{
MessageBox.Show("Wrong Username or Password for Admins!");
return;
}
}
}
}
private void cboCIDEdit_SelectedIndexChanged(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int cid = Convert.ToInt32(cboCIDEdit.Text);
var course = (from c in db.Student_Course where c.CID == cid select c).ToList();
dGVMarks.DataSource = course;
}
}
public void updateStudent()
{
using (SchoolEntities db = new SchoolEntities())
{
var students = (from c in db.Students select c).ToList();
cboSIDUp.DisplayMember = "SID";
cboSIDUp.ValueMember = "SID";
cboSIDUp.DataSource = students;
}
}
private void updateTeacher()
{
using (SchoolEntities db = new SchoolEntities())
{
var teachers = (from c in db.Teachers select c).ToList();
cboTIDUp.DisplayMember = "TID";
cboTIDUp.ValueMember = "TID";
cboTIDUp.DataSource = teachers;
}
}
public void refreshForm()
{
using (SchoolEntities db = new SchoolEntities())
{
var courses = (from c in db.Courses select c).ToList();
cboCourseID.DisplayMember = "CID";
cboCourseID.ValueMember = "CID";
cboCourseID.DataSource = courses;
}
}
public void updateAdmin()
{
using (SchoolEntities db = new SchoolEntities())
{
var admins = (from c in db.Administrators select c).ToList();
cboAIDUp.DisplayMember = "AID";
cboAIDUp.ValueMember = "AID";
cboAIDUp.DataSource = admins;
}
}
private void cboAIDUp_SelectedIndexChanged(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int ano = Convert.ToInt32(cboAIDUp.Text);
Administrator admins = (from c in db.Administrators where c.AID == ano select c).First();
txtFNameUp.Text = admins.FName;
txtLNameUp.Text = admins.LName;
txtPasswordUp.Text = admins.Password;
}
}
public void updateTeacher()
{
using (SchoolEntities db = new SchoolEntities())
{
var courses = (from c in db.Teachers select c).ToList();
cboAlloTeacher.DisplayMember = "TID";
cboAlloTeacher.ValueMember = "TID";
cboAlloTeacher.DataSource = courses;
cboAllodTeacher.DisplayMember = "TID";
cboAllodTeacher.ValueMember = "TID";
cboAllodTeacher.DataSource = courses;
}
}
private void cboCourseID_SelectedIndexChanged(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int cno = Convert.ToInt32(cboCourseID.Text);
Course courses = (from c in db.Courses where c.CID == cno select c).First();
txtCourseNameUp.Text = courses.CName;
cboAllodTeacher.Text = courses.TID.ToString();
txtYearUp.Text = courses.Year.ToString();
txtSemUp.Text = courses.Semester.ToString();
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int cno = Convert.ToInt32(cboCourseID.Text);
Course cor = (from c in db.Courses where c.CID == cno select c).First();
db.Courses.Remove(cor);
db.SaveChanges();
MessageBox.Show("Course Deleted!");
}
this.updateTeacher();
this.refreshForm();
}
private void btnDelete_Click(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int tno = Convert.ToInt32(cboTIDUp.Text);
Teacher teach = (from c in db.Teachers where c.TID == tno select c).First();
db.Teachers.Remove(teach);
db.SaveChanges();
MessageBox.Show("Teacher Deleted!");
}
this.updateTeacher();
}
private void btnDelete_Click(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int sno = Convert.ToInt32(cboSIDUp.Text);
Student stud = (from c in db.Students where c.SID == sno select c).First();
db.Students.Remove(stud);
db.SaveChanges();
MessageBox.Show("Student Deleted!");
}
this.updateStudent();
}
private void btnDelete_Click(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int ano = Convert.ToInt32(cboAIDUp.Text);
Administrator admins = (from c in db.Administrators where c.AID == ano select c).First();
db.Administrators.Remove(admins);
db.SaveChanges();
MessageBox.Show("Admin Deleted!");
}
this.updateAdmin();
}
private void btnUpdate_Click(object sender, EventArgs e)
{
string msgFName = val.valFName(txtFNameUp.Text);
string msgLName = val.valLName(txtLNameUp.Text);
string msgDate = val.validDateStart(dateSDUp.Value);
string msgDateDOB = val.validDateDOB(dateSUp.Value);
string msgPhone = val.valPhone(txtPhoneUp.Text);
string msgAdd1 = val.valAdd1(txtAddressLine1Up.Text);
string msgAdd2 = val.valAdd2(txtAddressLine2Up.Text);
string msgSuburb = val.valSub(txtSuburbUp.Text);
string msgPost = val.valPostcode(txtPostcodeUp.Text);
if (msgFName == "" && msgLName == "" && msgDate == "" && msgDateDOB == "" && msgPhone == "" && msgAdd1 == "" && msgAdd2 == "" && msgSuburb == "" && msgPost == "")
{
using (SchoolEntities db = new SchoolEntities())
{
int sno = Convert.ToInt32(cboSIDUp.Text);
Student students = (from c in db.Students where c.SID == sno select c).First();
students.FName = txtFNameUp.Text;
students.LName = txtLNameUp.Text;
students.SDate = dateSDUp.Value;
students.DOB = dateSUp.Value;
students.Phone = txtPhoneUp.Text;
students.Add1 = txtAddressLine1Up.Text;
students.Add2 = txtAddressLine2Up.Text;
students.Suburb = txtSuburbUp.Text;
students.State = cboStateUp.Text;
students.Postcode = txtPostcodeUp.Text;
db.SaveChanges();
MessageBox.Show("Student Updated!");
}
}
else
{
MessageBox.Show(msgFName + "\r\n" + msgLName + "\r\n" + msgPhone + "\r\n" + msgAdd1 + "\r\n" + msgAdd2 + "\r\n" + msgSuburb + "\r\n" + msgPost);
}
this.updateStudent();
}
private void cboSIDUp_SelectedIndexChanged(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int sno = Convert.ToInt32(cboSIDUp.Text);
Student students = (from c in db.Students where c.SID == sno select c).First();
txtFNameUp.Text = students.FName;
txtLNameUp.Text = students.LName;
dateSUp.Value = students.DOB;
txtPhoneUp.Text = students.Phone;
txtAddressLine1Up.Text = students.Add1;
txtAddressLine2Up.Text = students.Add2;
txtSuburbUp.Text = students.Suburb;
cboStateUp.Text = students.State;
txtPostcodeUp.Text = students.Postcode;
dateSDUp.Value = students.SDate;
}
}
private void btnUpdate_Click(object sender, EventArgs e)
{
string msgFName = val.valFName(txtFNameUp.Text);
string msgLName = val.valLName(txtLNameUp.Text);
string msgDate = val.validDateDOB(dateTUp.Value);
string msgPhone = val.valPhone(txtPhoneUp.Text);
string msgAdd1 = val.valAdd1(txtAddressLine1Up.Text);
string msgAdd2 = val.valAdd2(txtAddressLine2Up.Text);
string msgSuburb = val.valSub(txtSuburbUp.Text);
string msgPost = val.valPostcode(txtPostcodeUp.Text);
string msgRego = val.valRegoNo(txtRegNoUp.Text);
string msgPass = val.valPassword(txtPasswordUp.Text);
if (msgFName == "" && msgLName == "" && msgDate == "" && msgPhone == "" && msgAdd1 == "" && msgAdd2 == "" && msgSuburb == "" && msgPost == "" && msgRego == "" && msgPass == "")
{
using (SchoolEntities db = new SchoolEntities())
{
int tno = Convert.ToInt32(cboTIDUp.Text);
Teacher teachers = (from c in db.Teachers where c.TID == tno select c).First();
teachers.FName = txtFNameUp.Text;
teachers.LName = txtLNameUp.Text;
teachers.DOB = dateTUp.Value;
teachers.Phone = txtPhoneUp.Text;
teachers.Add1 = txtAddressLine1Up.Text;
teachers.Add2 = txtAddressLine2Up.Text;
teachers.Suburb = txtSuburbUp.Text;
teachers.State = cboStateUp.Text;
teachers.Postcode = txtPostcodeUp.Text;
teachers.RegNo = txtRegNoUp.Text;
teachers.Password = txtPasswordUp.Text;
db.SaveChanges();
MessageBox.Show("Teacher Updated!");
}
this.updateTeacher();
}
else
{
MessageBox.Show(msgFName + "\r\n" + msgLName + "\r\n" + msgPhone + "\r\n" + msgAdd1 + "\r\n" + msgAdd2 + "\r\n" + msgSuburb + "\r\n" + msgPost + "\r\n" + msgRego + "\r\n" + msgPass);
}
}
private void cboTIDUp_SelectedIndexChanged(object sender, EventArgs e)
{
using (SchoolEntities db = new SchoolEntities())
{
int tno = Convert.ToInt32(cboTIDUp.Text);
Teacher teachers = (from c in db.Teachers where c.TID == tno select c).First();
txtFNameUp.Text = teachers.FName;
txtLNameUp.Text = teachers.LName;
dateTUp.Value = teachers.DOB;
txtPhoneUp.Text = teachers.Phone;
txtAddressLine1Up.Text = teachers.Add1;
txtAddressLine2Up.Text = teachers.Add2;
txtSuburbUp.Text = teachers.Suburb;
cboStateUp.Text = teachers.State;
txtPostcodeUp.Text = teachers.Postcode;
txtRegNoUp.Text = teachers.RegNo;
txtPasswordUp.Text = teachers.Password;
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
string msgFName = val.valFName(txtFName.Text);
string msgLName = val.valLName(txtLName.Text);
string msgDate = val.validDateStart(dateSD.Value);
string msgDateDOB = val.validDateDOB(dateS.Value);
string msgPhone = val.valPhone(txtPhone.Text);
string msgAdd1 = val.valAdd1(txtAddressLine1.Text);
string msgAdd2 = val.valAdd2(txtAddressLine2.Text);
string msgSuburb = val.valSub(txtSuburb.Text);
string msgPost = val.valPostcode(txtPostcode.Text);
if (msgFName == "" && msgLName == "" && msgDate == "" && msgDateDOB == "" && msgPhone == "" && msgAdd1 == "" && msgAdd2 == "" && msgSuburb == "" && msgPost == "")
{
using (SchoolEntities db = new SchoolEntities())
{
Student students = new Student();
students.FName = txtFName.Text;
students.LName = txtLName.Text;
students.DOB = dateS.Value;
students.Phone = txtPhone.Text;
students.Add1 = txtAddressLine1.Text;
students.Add2 = txtAddressLine2.Text;
students.Suburb = txtSuburb.Text;
students.State = cboState.Text;
students.Postcode = txtPostcode.Text;
students.SDate = dateSD.Value;
db.Students.Add(students);
db.SaveChanges();
MessageBox.Show("New Student Added! ID:" + students.SID);
}
}
else
{
MessageBox.Show(msgFName + "\r\n" + msgLName + "\r\n" + msgPhone + "\r\n" + msgDate + "\r\n" + msgAdd1 + "\r\n" + msgDateDOB + "\r\n" + msgAdd2 + "\r\n" + msgSuburb + "\r\n" + msgPost);
}
this.refreshForm();
this.updateStudent();
}
private void btnAdd_Click(object sender, EventArgs e)
{
string msgFName = val.valFName(txtFName.Text);
string msgLName = val.valLName(txtLName.Text);
string msgDate = val.validDateDOB(dateT.Value);
string msgPhone = val.valPhone(txtPhone.Text);
string msgAdd1 = val.valAdd1(txtAddressLine1.Text);
string msgAdd2 = val.valAdd2(txtAddressLine2.Text);
string msgSuburb = val.valSub(txtSuburb.Text);
string msgPost = val.valPostcode(txtPostcode.Text);
string msgRego = val.valRegoNo(txtRegNo.Text);
string msgPass = val.valPassword(txtPassword.Text);
if (msgFName == "" && msgLName == "" && msgDate == "" && msgPhone == "" && msgAdd1 == "" && msgAdd2 == "" && msgSuburb == "" && msgPost == "" && msgRego == "" && msgPass == "")
{
using (SchoolEntities db = new SchoolEntities())
{
Teacher teachers = new Teacher();
teachers.FName = txtFName.Text;
teachers.LName = txtLName.Text;
teachers.DOB = dateT.Value;
teachers.Phone = txtPhone.Text;
teachers.Add1 = txtAddressLine1.Text;
teachers.Add2 = txtAddressLine2.Text;
teachers.Suburb = txtSuburb.Text;
teachers.State = cboState.Text;
teachers.Postcode = txtPostcode.Text;
teachers.RegNo = txtRegNo.Text;
teachers.Password = txtPassword.Text;
db.Teachers.Add(teachers);
db.SaveChanges();
MessageBox.Show("New Teacher Added! ID:" + teachers.TID);
}
}
else
{
MessageBox.Show(msgFName + "\r\n" + msgLName + "\r\n" + msgPhone + "\r\n" + msgAdd1 + "\r\n" + msgAdd2 + "\r\n" + msgSuburb + "\r\n" + msgPost + "\r\n" + msgRego + "\r\n" + msgPass);
}
}
