DataObjectProviderなしでビューをビューモデルにバインドしようとしています。
次のコードはエラーなしで実行されますが、私のリストボックスは空です。
私が知る限り、私は正しく:
- ビューのDataContextをViewModel自体に設定します(
DataContext = new CustomersViewModel();
) - ViewModelで顧客オブジェクトを公開します(
public static ObservableCollection<Customer> GetAll()
) - ListBoxを顧客オブジェクトにバインドします(
ItemsSource="{Binding GetAll}"
)
ここで欠けている構文は何ですか?
CustomersView.xaml:
<UserControl x:Class="TestDynamicForm123.View.CustomersView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<UserControl.Resources>
<Style x:Key="allCustomersListBox" TargetType="ListBox">
<Setter Property="BorderThickness" Value="0"/>
</Style>
<DataTemplate x:Key="allCustomersDataTemplate">
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding FirstName}"/>
<TextBlock Text=" "/>
<TextBlock Text="{Binding LastName}"/>
</StackPanel>
</DataTemplate>
</UserControl.Resources>
<StackPanel Style="{StaticResource viewWrappingStackPanel}">
<ListBox ItemsSource="{Binding GetAll}"
ItemTemplate="{StaticResource allCustomersDataTemplate}"
Style="{StaticResource allCustomersListBox}">
</ListBox>
</StackPanel>
</UserControl>
CustomersView.xaml.cs:
using System.Windows.Controls;
using TestDynamicForm123.ViewModel;
namespace TestDynamicForm123.View
{
public partial class CustomersView : UserControl
{
public CustomersView()
{
InitializeComponent();
DataContext = new CustomersViewModel();
}
}
}
CustomersViewModel.cs:
using System.Collections.ObjectModel;
namespace TestDynamicForm123.ViewModel
{
public class CustomersViewModel
{
public static ObservableCollection<Customer> GetAll()
{
return Customer.GetAll();
}
}
}
Customer.cs :(モデル)
using System.Collections.ObjectModel;
namespace TestDynamicForm123.ViewModel
{
public class Customer
{
public int Id { get; set; }
public string FirstName { get; set; }
public string LastName { get; set; }
public int Age { get; set; }
public static ObservableCollection<Customer> GetAll()
{
ObservableCollection<Customer> customers = new ObservableCollection<Customer>();
customers.Add(new Customer() { FirstName = "Jay", LastName = "Anders", Age = 34 });
customers.Add(new Customer() { FirstName = "Jim", LastName = "Smith", Age = 23 });
customers.Add(new Customer() { FirstName = "John", LastName = "Jones", Age = 22 });
customers.Add(new Customer() { FirstName = "Sue", LastName = "Anders", Age = 21 });
customers.Add(new Customer() { FirstName = "Chet", LastName = "Rogers", Age = 35 });
customers.Add(new Customer() { FirstName = "James", LastName = "Anders", Age = 37 });
return customers;
}
}
}