Binding a Text Box to Data Context

[StyleGuide]

Hi there, I'm new to WPF, so bear with me.. I have a Main View, and a view within it. I set the DataContext in my 'OnStartup' C# method: Views.MainView view = new Views.MainView(); view.AssignmentView.DataContext = new ViewModels.MainViewModel(_assignmentDataSource); I have previous / next button in my 'AssignmentView', that are linked to commands. This Moves focus from record to record as expected in my ListView, in my XAML : I think its a problem with the 'DataContext' - I don't think I should be wiring it up in the Stack Panel, but when I remove it, there is no data in the Stack Panel text box.. Where am I going wrong? Any help greatly appreciated. Thanks. Jon bgfbgf