c# - 从 Avalonia 中的 ItemsControl 按钮绑定(bind)到 MainViewModel 命令

Question

我正在尝试从 Avalonia 中的 ItemsControl 按钮创建 ReactiveUI MVVM 绑定(bind)在 WPF 中，这将通过 Freezable BindingProxy 完成。不过，Freezable 似乎在 Avalonia 中不可用。应该如何创建这样的绑定(bind)？

            <ItemsControl Items="{Binding MyQueue}">
              <ItemsControl.ItemTemplate>
                <DataTemplate>
                  <Button Content="My Button"
                          HorizontalAlignment="Center" VerticalAlignment="Center"
                          CommandParameter="{Binding}"
                          Command="{Binding MySpecialCmd}"/>
                </DataTemplate>
              </ItemsControl.ItemTemplate>
            </ItemsControl>

引用文献:
https://stackoverflow.com/questions/22073740/binding-visibility-for-datagridcolumn-in-wpf\ https://thomaslevesque.com/2011/03/21/wpf-how-to-bind-to-data-when-the-datacontext-is-not-inherited/

Answer 1

非常感谢 AvaloniaUI gitter 上的@maxkatz6。解决办法如下:

{Binding $parent[ItemsControl].DataContext.MySpecialCmd}

           <ItemsControl Items="{Binding MyQueue}">
              <ItemsControl.ItemTemplate>
                <DataTemplate>
                  <Button Content="My Button"
                          HorizontalAlignment="Center" VerticalAlignment="Center"
                          CommandParameter="{Binding}"
                          Command="{Binding $parent[ItemsControl].DataContext.MySpecialCmd}"/>
                </DataTemplate>
              </ItemsControl.ItemTemplate>
            </ItemsControl>