private void handleStudentDelete()
{
int index = studentsListBox.SelectedIndex;
if (index < students.Count && index != -1)
{
bool isLastIndex = index == studentsListBox.Items.Count - 1;
students.RemoveAt(index);
StudentIO.RemoveStudent(index);
if (isLastIndex)
{
index = index - 1;
}
}
if (studentsListBox.SelectedIndex != -1)
{
studentsListBox.SelectedIndex = index;
updateStudentDetails(index);
toggleStudentDetailsEdit(false);
}
else
{
idDisplayText.Clear();
nameDisplayText.Clear();
classDisplayText.Clear();
sectionDisplayText.Clear();
contactDisplayText.Clear();
addressDisplayText.Clear();
editStudentButton.Enabled = false;
}
idText.Text = StudentIO.NextId().ToString();
}
public MainWindow()
{
InitializeComponent();
students = new BindingList <Student>(StudentIO.LoadStudents());
ShowData();
idText.Text = StudentIO.NextId().ToString();
editStudentButton.Enabled = false;
}
private void handleLoadButtonClick()
{
toggleStudentDetailsEdit(false);
List <Student> loadedStudents = StudentIO.LoadStudents();
if (studentsListBox.Items.Count != loadedStudents.Count)
{
students = new BindingList <Student>(loadedStudents);
ShowData();
}
idText.Text = StudentIO.NextId().ToString();
}
private void updateStudentButton_Click(object sender, EventArgs e)
{
toggleStudentDetailsEdit(false);
if (!isStudentDetailChanged())
{
return;
}
int _id = int.Parse(idDisplayText.Text);
string _name = nameDisplayText.Text;
string _class = classDisplayText.Text;
string _section = sectionDisplayText.Text;
string _contact = contactDisplayText.Text;
string _address = addressDisplayText.Text;
StudentIO.UpdateStudent(studentsListBox.SelectedIndex, new Student(_id, _name, _class, _section, _contact, _address));
}
private void exportStudentsButton_Click(object sender, EventArgs e)
{
toggleStudentDetailsEdit(false);
string path;
SaveFileDialog dialog = new SaveFileDialog();
dialog.Filter = "CSV (*.csv)|*.csv";
dialog.Title = "Export Students as CSV";
dialog.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
DialogResult result = dialog.ShowDialog();
if (result == DialogResult.OK)
{
path = dialog.FileName;
if (StudentIO.ExportStudents(path))
{
MessageBox.Show("Students exported successfully!", "Successful!", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else
{
MessageBox.Show("There was a problem completing the request. Please make sure there are students to export and then try again or contact system administrator!", "Could not complete request!", MessageBoxButtons.OKCancel, MessageBoxIcon.Error);
}
}
}
private void saveStudentButton_Click(object sender, EventArgs e)
{
toggleStudentDetailsEdit(false);
updateStudentDetails(studentsListBox.SelectedIndex);
int _id = StudentIO.NextId();
string _name = nameText.Text;
string _class = classText.Text;
string _section = sectionText.Text;
string _contact = contactText.Text;
string _address = addressText.Text;
if (IsValid(_name) && IsValid(_class) && IsValid(_section) && IsValid(_contact) && IsValid(_address))
{
Student student = new Student(_id, _name, _class, _section, _contact, _address);
StudentIO.SaveStudent(student);
students.Add(student);
idText.Text = StudentIO.NextId().ToString();
}
else
{
MessageBox.Show(text: "Please enter all the details!", caption: "Invalid Input Error!", buttons: MessageBoxButtons.OK, icon: MessageBoxIcon.Error);
}
studentsListBox.SelectedIndex = studentsListBox.Items.Count - 1;
}
