xaml - XAML bind to Collection[index].ObjectProperty

Question

I have an observable collection of objects in my VM. I want to bind to a property of a specific item in the list in a text block, something like this:

Binding="{MyVMCollection[0].Description}"

But this syntax does not work. Is it possible to do what I am after and if so, how?

Thanks!

Answer 1

You're missing the Binding keyword and I think you also need to use Path.

Binding="{Binding Path=MyVMCollection[0].Description}"

Answer 2

对象的类型必须是数组索引通常可以正常工作的类型。我不确定确切的限制，但Type[]如果有疑问，请使用。

例如。如果它是一些奇怪的可枚举类型IOrderedEnumerable<T>（或一些奇怪的 LINQy 类型），那么类似的东西{Binding List[0]}将不起作用。