How do I use INotifyPropertyChanged to update an array binding?

Question

Let\'s say I have a class:

class Foo
{
  public string Bar
  {
    get { ... }
  }

  public string this[int index]
  {
    get { ... }
  }
}

I

Answer 1

Don't know for sure if this'll work, but reflector shows that the get and set methods for an indexed property are called get_Item and set_Item. Perhaps you could try Item and see if that works.

Answer 2

Avoiding strings in your code, you can use the constant Binding.IndexerName, which is actually "Item[]"

new PropertyChangedEventArgs(Binding.IndexerName)

Answer 3

PropertyChanged( this, new PropertyChangedEventArgs( "Item[]" ) )

for all indexes and

PropertyChanged( this, new PropertyChangedEventArgs( "Item[" + index + "]" ) )

for a single item

greetings, jerod

Answer 4

Thanks to Cameron's suggestion, I've found the correct syntax, which is:

Item[]

Which updates everything (all index values) bound to that indexed property.