//Кнопка "Изменить"
private void buttonEdit_Click(object sender, EventArgs e)
{
try
{
if (listViewStudents.SelectedItems.Count == 1)
{
if (comboBoxGroups.SelectedItem != null && textBoxFirstName.Text != "" && textBoxMiddleName.Text != "" &&
textBoxLastName.Text != "" && dateTimePickerYear.Value != null)
{
StudentsSet studentsSet = listViewStudents.SelectedItems[0].Tag as StudentsSet;
studentsSet.IdGroup = Convert.ToInt32(comboBoxGroups.SelectedItem.ToString().Split('.')[0]);
studentsSet.FirstName = textBoxFirstName.Text;
studentsSet.MiddleName = textBoxMiddleName.Text;
studentsSet.LastName = textBoxLastName.Text;
studentsSet.YearPost = dateTimePickerYear.Value;
Program.ekzDb.SaveChanges();
ShowStudents();
}
}
else
{
MessageBox.Show("Поля не заполнены! Проверьте и повторите попытку.", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
}
catch (Exception ex) { MessageBox.Show("" + ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
}
//Кнопка "Удалить"
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewStudents.SelectedItems.Count == 1)
{
StudentsSet studentsSet = listViewStudents.SelectedItems[0].Tag as StudentsSet;
Program.ekzDb.StudentsSet.Remove(studentsSet);
Program.ekzDb.SaveChanges();
ShowStudents();
}
comboBoxGroups.SelectedItem = null;
dateTimePickerYear.Value = DateTime.Now;
textBoxFirstName.Text = "";
textBoxMiddleName.Text = "";
textBoxLastName.Text = "";
}
catch { MessageBox.Show("Невозможно удалить, эта запись используется!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error); }
}
//Вывод информации
private void listViewStudents_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewStudents.SelectedItems.Count == 1)
{
StudentsSet studentsSet = listViewStudents.SelectedItems[0].Tag as StudentsSet;
comboBoxGroups.SelectedIndex = comboBoxGroups.FindString(studentsSet.IdGroup.ToString());
dateTimePickerYear.Value = studentsSet.YearPost;
textBoxFirstName.Text = studentsSet.FirstName;
textBoxMiddleName.Text = studentsSet.MiddleName;
textBoxLastName.Text = studentsSet.LastName;
}
else
{
comboBoxGroups.SelectedItem = null;
dateTimePickerYear.Value = DateTime.Now;
textBoxFirstName.Text = "";
textBoxMiddleName.Text = "";
textBoxLastName.Text = "";
}
}