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copied!<p>The short answer to your question is: Yes, its possible. While this is a messy way of doing things, and I would not recommend doing it this way (unless you really have to, since I don't know your context details), here's the idea:</p> <ol> <li><p>First problem is, Header binding seems to be broken somewhat. I was unable to bind to it through regular means except through Source={x:Static} to define an alternate datacontext.</p></li> <li><p>Binding to a collection isn't possible in a Header binding, so you'll need to give it a scaler value OR write a converter that takes a parameter in and looks it up in your dictionary to return the real value.</p></li> </ol> <p>And here's the sample code show how <em>we</em> did it to test the binding (without converter):</p> <p><strong>XAML</strong></p> <pre><code><Window x:Name="window" x:Class="WpfDataGridMisc.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="214" DataContext="{Binding Source={x:Static wpfDataGridMisc:PersonsViewModel.Instance}}" xmlns:wpfDataGridMisc="clr-namespace:WpfDataGridMisc"> <DataGrid AutoGenerateColumns="False" ItemsSource="{Binding Persons}"> <DataGrid.Columns> <DataGridTextColumn Binding="{Binding FirstName}" Header="{Binding Source={x:Static wpfDataGridMisc:PersonsViewModel.Instance}, Path=Header1}" /> </DataGrid.Columns> </DataGrid> </Window> </code></pre> <p><strong>PersonsViewModel</strong></p> <pre><code>using System; using System.Collections.ObjectModel; namespace WpfDataGridMisc { public class PersonsViewModel { private static readonly PersonsViewModel Current = new PersonsViewModel(); public static PersonsViewModel Instance { get { return Current; } } private PersonsViewModel() { Persons = new ObservableCollection<Person> { new Person {FirstName = "Thomas", LastName = "Newman", Date = DateTime.Now}, new Person {FirstName = "Dave", LastName = "Smith", Date = DateTime.Now}, }; Header1 = "Header 1"; } public ObservableCollection<Person> Persons { get; private set; } public string Header1 { get; set; } } } </code></pre> <p>Person class is a standard poco deducable from Person in code above.</p> <p>Credit: Thanks to <a href="https://stackoverflow.com/users/1069200/johan-larsson">Johan Larsson</a> for the bulk of code. He was working on this solution and I was just helping but he felt I should post the answer as x:Static was my idea.</p>

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