//Кнопка "Изменить"
private void buttonEdit_Click(object sender, EventArgs e)
{
try
{
if (listViewSubjects.SelectedItems.Count == 1)
{
if (textBoxName.Text != "" && textBoxPrepod.Text != "" &&
textBoxChemester.Text != "" && textBoxYear.Text != "")
{
SubjectsSet subjectsSet = listViewSubjects.SelectedItems[0].Tag as SubjectsSet;
subjectsSet.Name = textBoxName.Text;
subjectsSet.Teacher = textBoxPrepod.Text;
subjectsSet.Semestr = Convert.ToInt32(textBoxChemester.Text);
subjectsSet.Year = Convert.ToInt32(textBoxYear.Text);
Program.ekzDb.SaveChanges();
ShowSubjects();
}
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); }
}
private void listViewSubjects_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewSubjects.SelectedItems.Count == 1)
{
SubjectsSet subjectsSet = listViewSubjects.SelectedItems[0].Tag as SubjectsSet;
textBoxName.Text = subjectsSet.Name;
textBoxPrepod.Text = subjectsSet.Teacher;
textBoxChemester.Text = subjectsSet.Semestr.ToString();
textBoxYear.Text = subjectsSet.Year.ToString();
}
else
{
textBoxName.Text = "";
textBoxPrepod.Text = "";
textBoxChemester.Text = "";
textBoxYear.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewSubjects.SelectedItems.Count == 1)
{
SubjectsSet subjectsSet = listViewSubjects.SelectedItems[0].Tag as SubjectsSet;
Program.ekzDb.SubjectsSet.Remove(subjectsSet);
Program.ekzDb.SaveChanges();
ShowSubjects();
}
textBoxName.Text = "";
textBoxPrepod.Text = "";
textBoxChemester.Text = "";
textBoxYear.Text = "";
}
catch { MessageBox.Show("Невозможно удалить, эта запись используется!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error); }
}