private void buttonEdit_Click(object sender, EventArgs e)
{
if (listViewStudents.SelectedItems.Count == 1)
{
StudentsSet studentsSet = listViewStudents.SelectedItems[0].Tag as StudentsSet;
studentsSet.FirstName = textBoxFirstName.Text;
studentsSet.MiddleName = textBoxMiddleName.Text;
studentsSet.LastName = textBoxLastName.Text;
studentsSet.Class = Convert.ToInt32(textBoxClass.Text);
Program.school.SaveChanges();
ShowStudents();
}
}
private void listViewStudents_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewStudents.SelectedItems.Count == 1)
{
StudentsSet studentsSet = listViewStudents.SelectedItems[0].Tag as StudentsSet;
textBoxFirstName.Text = studentsSet.FirstName;
textBoxLastName.Text = studentsSet.LastName;
textBoxMiddleName.Text = studentsSet.MiddleName;
textBoxClass.Text = Convert.ToString(studentsSet.Class);
}
else
{
textBoxFirstName.Text = "";
textBoxLastName.Text = "";
textBoxMiddleName.Text = "";
textBoxClass.Text = "";
}
}
private void buttonAdd_Click(object sender, EventArgs e)
{
try
{
StudentsSet studentsSet = new StudentsSet();
studentsSet.FirstName = textBoxFirstName.Text;
studentsSet.LastName = textBoxLastName.Text;
studentsSet.MiddleName = textBoxMiddleName.Text;
studentsSet.Class = Convert.ToInt32(textBoxClass.Text);
Program.school.StudentsSet.Add(studentsSet);
Program.school.SaveChanges();
ShowStudents();
}
catch
{
MessageBox.Show("Неправильно введены данные!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewStudents.SelectedItems.Count == 1)
{
StudentsSet studentsSet = listViewStudents.SelectedItems[0].Tag as StudentsSet;
Program.school.StudentsSet.Remove(studentsSet);
Program.school.SaveChanges();
}
textBoxFirstName.Text = "";
textBoxMiddleName.Text = "";
textBoxLastName.Text = "";
textBoxClass.Text = "";
ShowStudents();
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
