Working on a client app where i need to bind to an indexed list of accounts where each account in the list is an Account object..

I got this working today to bind to a generic list indexer:

<TextBox x:Name="Account730AValueTextBox" Grid.Row="1" Grid.Column="1" Text="{Binding AccountsDictionary[AAA].AccountValue, Mode=TwoWay}" />

AAA is the account number. So there you have AccountValue returned from the Account object for AAA. Pretty cool if you ask me.

Binding to indexers really rocks.