C#.Net: WPF 에서 WebApi 사용하기

WPF 에서 WebApi 사용하기

public class Item

    public string Id { get; set; }

    public string Name { get; set; }

public class ItemController : ApiController

    Item[] items = new Item[]

        new Item { Id = "google", Name = "Google" },

        new Item { Id = "naver", Name = "Naver" },

        new Item { Id = "daum", Name = "Daum" }

};

    public IEnumerable<Item> GetAllItems()

        return items;

public class ItemCollection : ObservableCollection<Item>

    public void CopyFrom(IEnumerable<Item> items)

        this.Items.Clear();

        foreach (var p in items)

            this.Items.Add(p);

        this.OnCollectionChanged(

            new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));

<StackPanel Width="250" >

    <Button Name="getAllItemsButton" Click="GetItems">Get Items</Button>

    <ListBox Name="ItemsList">

        <ListBox.ItemTemplate>

            <DataTemplate>

                <StackPanel Margin="2">

                    <TextBlock >Id: <Run Text="{Binding Path=Id}" /></TextBlock>

                    <TextBlock >Name: <Run Text="{Binding Path=Name}" /></TextBlock>

                </StackPanel>

            </DataTemplate>

        </ListBox.ItemTemplate>

    </ListBox>

</StackPanel>

비동기 호출을 사용하여 사용자 응답성을 향상 시킨다.

public partial class MainWindow : Window

    HttpClient client = new HttpClient();

    ItemCollection items = new ItemCollection();

    public MainWindow()

        InitializeComponent();

        client.BaseAddress = new Uri("http://localhost:59791");

        client.DefaultRequestHeaders.Accept.Add(

            new MediaTypeWithQualityHeaderValue("application/json"));

        this.ItemsList.ItemsSource = this.items;

    private async void GetItems(object sender, RoutedEventArgs e)

try

            this.getAllItemsButton.IsEnabled = false;

            var response = await client.GetAsync("api/item/getallitems");

            response.EnsureSuccessStatusCode();

            var items = await response.Content.ReadAsAsync<IEnumerable<Item>>();

            this.items.CopyFrom(items);

        catch (Newtonsoft.Json.JsonException jEx)

            MessageBox.Show(jEx.Message);

        catch (HttpRequestException ex)

            MessageBox.Show(ex.Message);

        finally

            this.getAllItemsButton.IsEnabled = true;