private void buttonEdit_Click(object sender, EventArgs e)
{
if (listViewMarks.SelectedItems.Count == 1)
{
if (comboBoxStudent.SelectedItem != null && comboBoxSubject.SelectedItem != null &&
textBoxMark.Text != "")
{
int temp;
bool mark = int.TryParse(textBoxMark.Text, out temp);
if (!mark)
{
MessageBox.Show("Оценка - это число", "Неверный формат оценки", MessageBoxButtons.OK);
}
else
{
MarksSet marksSet = listViewMarks.SelectedItems[0].Tag as MarksSet;
marksSet.id_Student = Convert.ToInt32(comboBoxStudent.SelectedItem.ToString().Split('.')[0]);
marksSet.id_Subject = Convert.ToInt32(comboBoxSubject.SelectedItem.ToString().Split('.')[0]);
marksSet.Mark = Convert.ToInt32(textBoxMark.Text);
Program.abc.SaveChanges();
ShowMarks();
}
}
else
{
MessageBox.Show("Заполните все поля", "Невозможно внести данные!", MessageBoxButtons.OK);
}
}
}
private void listViewMarks_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewMarks.SelectedItems.Count == 1)
{
MarksSet marksSet = listViewMarks.SelectedItems[0].Tag as MarksSet;
comboBoxStudent.SelectedIndex = comboBoxStudent.FindString(marksSet.id_Student.ToString());
comboBoxSubject.SelectedIndex = comboBoxSubject.FindString(marksSet.id_Subject.ToString());
textBoxMark.Text = marksSet.Mark.ToString();
}
else
{
comboBoxStudent.SelectedItem = null;
comboBoxSubject.SelectedItem = null;
textBoxMark.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewMarks.SelectedItems.Count == 1)
{
MarksSet marksSet = listViewMarks.SelectedItems[0].Tag as MarksSet;
Program.abc.MarksSet.Remove(marksSet);
Program.abc.SaveChanges();
ShowMarks();
}
comboBoxStudent.SelectedItem = null;
comboBoxSubject.SelectedItem = null;
textBoxMark.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}