private void btnSave_Click(object sender, RoutedEventArgs e) { //read values p.FirstName = txtFirstName.Text; p.LastName = txtLastName.Text; p.DateOfBirth = DateTime.Parse(txtDateOfBirt.Text); p.HeightInInches = Int32.Parse(txtEight.Text); p.WeightInPounds = Int32.Parse(txtWeight.Text); //save player Team t = (Team)cmbTeams.SelectedItem; if (t.Add(t.Id)) { MessageBox.Show("Added!"); } p.Team = t.Id; p.Add(); MessageBox.Show("Added!"); //clean txbox txtFirstName.Text = ""; txtLastName.Text = ""; txtDateOfBirt.Text = ""; txtEight.Text = ""; txtWeight.Text = ""; }