Gets or sets a value that indicates whether a NavigationWindow isolates external Extensible Application Markup Language (XAML) content within a partial trust security sandbox (with default Internet zone permission set).
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
is set when an application is executing in partial trust.
External content is XAML content that is not included with an application as either a resource file or a content file (for more information, see WPF Application Resource, Content, and Data Files).
When is true, and the content of the NavigationWindow is an external XAML file, the content is loaded into a partial trust security sandbox that is limited to the default Internet zone permission set. Additionally, the external content is loaded into a separate process. Consequently, the external content becomes isolated and does not have access to application-scope resources, such as resource dictionaries (for more information, see ResourceDictionary).