private void btnDeleteStudent_Click(object sender, EventArgs e)
{
// ensure a student is selected
if (lstStudentRoster.SelectedIndex < 0)
{
MessageBox.Show("Please select a student");
return;
}
// get selected student
Student selStu = lstStudentRoster.SelectedItem as Student;
// delete student by sid
if (StudentDb.DeleteStudent(selStu.StudentID))
{
MessageBox.Show($"{ selStu.FirstName} was deleted");
// PopulateStudentListBox();
// or do this lstStudentRoster.Items.Remove(selStu); this removes just the student and is more effecient
// than talking to database
lstStudentRoster.Items.Remove(selStu);
}
else
{
MessageBox.Show("Student could not be deleted at this time");
}
}
private void PopulateStudentListBox()
{
List <Student> stuList = StudentDb.GetAllStudents();
lstStudentRoster.Items.Clear();
foreach (Student s in stuList)
{
lstStudentRoster.Items.Add(s);
}
}
private void btnAddStudent_Click(object sender, EventArgs e)
{
if (IsDataValid())
{
string name = txtName.Text;
DateTime dob = Convert.ToDateTime(txtDOB.Text);
string major = txtMajor.Text;
// add all data to student object
// Method 1: populate object property by property
var addStu = new Student();
addStu.FirstName = name;
addStu.DateOfBirth = dob;
addStu.Major = major;
addStu.StudentID = txtStudentID.Text;
// database will generate SID
// method 2: pbject initialization syntax
var addStu2 = new Student()
{
FirstName = name,
DateOfBirth = dob,
Major = major
};
// method 3: use the constructor
var addstu3 = new Student(name, dob, major);
// add student object to database
if (StudentDb.AddStudent(addStu))
{
MessageBox.Show("Student Added");
// ignore passing the name back to the main form
this.Tag = name;
this.StudentName = name;
this.stu = name;
DialogResult = DialogResult.OK;
}
else
{
MessageBox.Show("Stu cannot be added at this time");
}
}
}
