绑定DataContex。[0]时引发异常？

Question

My Datacontext is a ObsevableCollection ,

I need to bind it with a Value <double> property

The below binding not works in my case, (as it a property of dependency object within class of type ObervableCollection<T>)

 Value="{Binding [0]}"

So i need to bind something like this

Value="{Binding DataContext.[0], ElementName=grid}"

But it throws exception

WinRT information: Failed to assign to property 'Windows.UI.Xaml.Data.Binding.Path'

How can i resolve this?

Thanks in advance JoyRex

Answer 1

给它

Value="{Binding DataContext[0], ElementName=grid}"