protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
string _identity = "-1";
if (NavigationContext.QueryString.TryGetValue("identity", out _identity))
{
if (!string.IsNullOrWhiteSpace(_identity))
{
lblTitulo.Text = "Editar";
lblIdentity.Text = _identity;
using (var context = new MercadoDbContext(App._connectionString))
{
var query = (from _con in context.Produtos
where _con.Id == int.Parse(_identity)
select _con).FirstOrDefault();
txtNome.Text = query.Nome;
txtPreco.Text = query.Preco.ToString();
txtDescricao.Text = query.Descricao;
}
}
else
{
lblIdentity.Text = string.Empty;
lblTitulo.Text = "Adicionar";
}
}
}
public void Carregar()
{
IList<Produto> _contato = null;
using (var _context = new MercadoDbContext(App._connectionString))
{
IQueryable<Produto> _query = _context.Produtos;
_contato = _query.ToList();
this.Itens.Clear();
foreach (var item in _contato)
{
this.Itens.Add(item);
}
}
}
private void btnRemover_Click(object sender, EventArgs e)
{
if (MessageBox.Show("Deseja remover o produto?",
"Atenção", MessageBoxButton.OKCancel) == MessageBoxResult.OK)
{
using (var context = new MercadoDbContext(App._connectionString))
{
Produto _p = (mainLista.SelectedItem as Produto);
context.Produtos.Attach(_p);
context.Produtos.DeleteOnSubmit(_p);
context.SubmitChanges();
_p = null;
}
App.ViewProduto.Carregar();
}
}
/// <summary>
/// Constructor for the Application object.
/// </summary>
public App()
{
// Global handler for uncaught exceptions.
UnhandledException += Application_UnhandledException;
// Standard XAML initialization
InitializeComponent();
// Phone-specific initialization
InitializePhoneApplication();
// Language display initialization
InitializeLanguage();
// Show graphics profiling information while debugging.
if (Debugger.IsAttached)
{
// Display the current frame rate counters.
Application.Current.Host.Settings.EnableFrameRateCounter = true;
// Show the areas of the app that are being redrawn in each frame.
//Application.Current.Host.Settings.EnableRedrawRegions = true;
// Enable non-production analysis visualization mode,
// which shows areas of a page that are handed off to GPU with a colored overlay.
//Application.Current.Host.Settings.EnableCacheVisualization = true;
// Prevent the screen from turning off while under the debugger by disabling
// the application's idle detection.
// Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
// and consume battery power when the user is not using the phone.
PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
}
using (var _context = new MercadoDbContext(App._connectionString))
{
if (!_context.DatabaseExists()) _context.CreateDatabase();
}
}
private void Editar()
{
using (var _context = new MercadoDbContext(App._connectionString))
{
Produto _contato = (_context.Produtos.Where(a => a.Id == int.Parse(lblIdentity.Text)).First() as Produto);
_contato.Nome = txtNome.Text;
_contato.Preco = int.Parse(txtPreco.Text);
_contato.Descricao = txtDescricao.Text;
try
{
_context.SubmitChanges();
if (NavigationService.CanGoBack) NavigationService.GoBack();
}
catch (Exception erro)
{
MessageBox.Show(erro.Message);
}
}
}
private void Inserir()
{
using (var _context = new MercadoDbContext(App._connectionString))
{
Produto _p = new Produto()
{
Nome = txtNome.Text,
Preco = int.Parse(txtPreco.Text),
Descricao = txtDescricao.Text
};
try
{
_context.Produtos.InsertOnSubmit(_p);
_context.SubmitChanges();
if (NavigationService.CanGoBack) NavigationService.GoBack();
}
catch (Exception erro)
{
MessageBox.Show(erro.Message);
}
}
}