private void btnInserirVeic_Click(object sender, RoutedEventArgs e)
        {
            bool k;

            if ((bool)checkBox.IsChecked)
            {
                k = true;
            }
            else
            {
                k = false;
            }

            Models.Veiculo v = new Models.Veiculo
            {
                id            = int.Parse(txtIdVeic.Text),
                modelo        = txtModelo.Text,
                ano           = txtAno.Text,
                preco         = double.Parse(txtPreco.Text),
                fabricante    = Convert.ToString(cmbFabricantes.SelectedValue),
                situacaoVenda = k
            };

            veiculos.Add(v);
            lstVeic.Items.Add(v);

            if (v.situacaoVenda)
            {
                lstVeicDisp.Items.Add(v);
            }
            else
            {
                lstveicVendidos.Items.Add(v);
            }
        }
        private async void btnInserirVeic_Click(object sender, RoutedEventArgs e)
        {
            HttpClient httpClient = new HttpClient();

            httpClient.BaseAddress = new Uri(ip);

            bool k;

            if ((bool)checkBox.IsChecked)
            {
                k = true;
            }
            else
            {
                k = false;
            }

            Models.Veiculo v = new Models.Veiculo
            {
                Modelo        = txtModelo.Text,
                Ano           = txtAno.Text,
                Preco         = double.Parse(txtPreco.Text),
                IdFabricante  = int.Parse(cmbFabricantes.SelectedValuePath),
                SituacaoVenda = k
            };

            string s       = JsonConvert.SerializeObject(v);
            var    content = new StringContent(s, Encoding.UTF8, "application/json");
            await httpClient.PostAsync("/20131011110029/api/veiculo", content);
        }
        private async void btnVender_Click(object sender, RoutedEventArgs e)
        {
            HttpClient httpClient = new HttpClient();

            httpClient.BaseAddress = new Uri(ip);

            Models.Veiculo x = (from y in veiculos where y.Id == int.Parse(txtIdVeic.Text) select y).Single();
            x.SituacaoVenda = false;

            var content = new StringContent(JsonConvert.SerializeObject(x), Encoding.UTF8, "application/json");
            await httpClient.PutAsync("/20131011110029/api/veiculo/" + x.Id, content);

            getVeiculos();
        }