private void Add_Click(object sender, EventArgs e)
{
TrackData trackdata = new TrackData();
List<Album> albums = db.Albums.ToList();
trackdata.comboBox1.DataSource = albums;
trackdata.comboBox1.ValueMember = "Id";
trackdata.comboBox1.DisplayMember = "Name";
DialogResult result = trackdata.ShowDialog(this);
if (result == DialogResult.Cancel)
return;
Track track = new Track();
track.Name = trackdata.textBox1.Text;
//вводить с звпятой, инициализировать с точкой
track.Length = double.Parse(trackdata.textBox2.Text);
track.Number = int.Parse(trackdata.textBox3.Text);
track.Album = (Album)trackdata.comboBox1.SelectedItem;
db.Tracks.Add(track);
db.SaveChanges();
MessageBox.Show("Новый альбом добавлен");
}
private void Change_Click(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows.Count > 0)
{
int index = dataGridView1.SelectedRows[0].Index;
int id = 0;
bool converted = Int32.TryParse(dataGridView1[0, index].Value.ToString(), out id);
if (converted == false)
return;
Track track = db.Tracks.Find(id);
TrackData trackdata = new TrackData();
trackdata.textBox1.Text = track.Name;
trackdata.textBox2.Text = Convert.ToString(track.Length);
trackdata.textBox3.Text = Convert.ToString(track.Number);
List<Album> albums = db.Albums.ToList();
trackdata.comboBox1.DataSource = albums;
trackdata.comboBox1.ValueMember = "Id";
trackdata.comboBox1.DisplayMember = "Name";
if (track.Album != null)
trackdata.comboBox1.SelectedValue = track.Album.Id;
DialogResult result = trackdata.ShowDialog(this);
if (result == DialogResult.Cancel)
return;
track.Name = trackdata.textBox1.Text;
track.Length = int.Parse(trackdata.textBox2.Text);
track.Number = int.Parse(trackdata.textBox3.Text);
track.Album = (Album)trackdata.comboBox1.SelectedItem;
db.Entry(track).State = EntityState.Modified;
db.SaveChanges();
MessageBox.Show("Объект обновлен");
}
}
