Beginning Web Development, Silverlight, and ASP.NET AJAX

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CHAPTER 8 ■ .NET 3.0: WINDOWS PRESENTATION FOUNDATION
8. Select Address (Array) and click Finish. This sets the DataContext for the Grid (and
thus all its child controls) to the set of addresses that are found in the XML file.
9. Next, add a TextBox, a Button, and a ListBox to the window. You are going to set up
the data binding for the ListBox. Select it and look at its common properties. You
will see that its DataContext property has already been initialized because the
control is on the Grid that had its DataContext set, and the ListBox inherited this.
You can of course override it and point to a different data source to get the context
for this control, but for now, this is perfectly OK.
10. To bind the ListBox to the data source, you use the ItemsSource property. Click it
and select Data Binding in the ensuing dialog.
11. The Create Data Binding dialog will appear. This time, you want to bind to the
context that is already present, so select the Explicit Data Context tab and pick
your data source from there. If you don’t see all the fields, change the Show dropdown
to All Properties (see Figure 8-22).
Figure 8-22. Binding to the current DataContext