Question

I have a ViewModel with 2 properties:

• IsReadOnly
• SomeCollectionViewSource

This is a simple working view example:

<StackPanel DataContext="{Binding SomeCollectionViewSource}">
  <DatePicker SelectedDate="{Binding Path=Date}" IsEnabled="False" />      
</StackPanel>

Now I want to bind the IsEnabled property:

<StackPanel DataContext="{Binding}">
  <DatePicker SelectedDate="{Binding Path=?}" IsEnabled="{Binding IsReadOnly}" />      
</StackPanel>

How should the binding look like in this example? (I think I’m mising something simple)
I would prefer a short and easy binding since I have a lot of controls to bind.

Is there a better/easier way to make all controls on one CollectionViewSource read-only?

Answer 1

Under the assumption that the above binding targets the current item this should be equivalent:

{Binding SomeCollectionViewSource.View/Date}

Also see the references for Binding.Path and the PropertyPath syntax if you have not read them already, there’s a lot to it.

The above binding (of your two bindings) is equivalent to:

{Binding Path=/Date}

The slash can be omitted and if the property is not found on the collection the binding looks for the property on the current item. so…

{Binding Date} binds to: CurrentItem -> Date
{Binding Count} binds to: Count

For clarity i would suggest always explicity writing the slash.

(Setting any DataContext to {Binding} is really pointless by the way)