c# - DataContext 并将自身绑定(bind)为 RelativeSource

Question

有人可以向我解释以下 XAML 行吗？

DataContext="{Binding RelativeSource={RelativeSource Self}}"

Here简单的使用示例。

如何用 C# 代码替换该行？

Answer 1

这只是将 DataContext 属性设置为等于具有该属性的对象。等效代码为 this.DataContext = this;

编辑

DataContext 属性是用作此对象及其子对象上发生的所有绑定(bind)的上下文的对象。如果您没有将 DataContext 正确设置为要绑定(bind)到的模型，则所有绑定(bind)都将失败。

编辑2

以下是如何在后面的代码中设置它(与您的示例匹配):

public partial class ListViewTest : Window
{
    ObservableCollection<GameData> _GameCollection = 
        new ObservableCollection<GameData>();

    public ListViewTest()
    {
        _GameCollection.Add(new GameData { 
          GameName = "World Of Warcraft", 
          Creator = "Blizzard", 
          Publisher = "Blizzard" });
        _GameCollection.Add(new GameData { 
          GameName = "Halo", 
          Creator = "Bungie", 
          Publisher = "Microsoft" });
        _GameCollection.Add(new GameData { 
          GameName = "Gears Of War", 
          Creator = "Epic", 
          Publisher = "Microsoft" });

        InitializeComponent();

        this.DataContext = this;   //important part
    }

    public ObservableCollection<GameData> GameCollection
    { get { return _GameCollection; } }

    private void AddRow_Click(object sender, RoutedEventArgs e)
    {
      _GameCollection.Add(new GameData { 
          GameName = "A New Game", 
          Creator = "A New Creator", 
          Publisher = "A New Publisher" });
    }
}