#71 – XAML Files Have A Single Root Element

Each XAML file has exactly one root element, the outermost XAML element.  In WPF, the root element is typically one of:

  • <Page> – A page of content that can be hosted in a browser (System.Windows.Controls.Page)
  • <Window> – A WPF window (System.Windows.Window)
  • <Application> – A WPF application (System.Windows.Application)
  • <ResourceDictionary> – A collection of resources (System.Windows.ResourceDictionary)
  • <UserControl> – A user-defined control (System.Windows.Controls.UserControl)

Root elements also typically include attributes that indicate the namespace(s) used to interpret the content of the XAML file.


About Sean
Software developer in the Twin Cities area, passionate about software development and sailing.

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