xaml Differences in the various XAML dialects Importing namespaces in XAML
Example
Most of the time you need to import namespaces in your XAML file. How this is done is different for the different XAML variants.
For Windows Phone, Silverlight, WPF use the clr-namespace syntax:
<Window ... xmlns:internal="clr-namespace:rootnamespace.namespace"
xmlns:external="clr-namespace:rootnamespace.namespace;assembly=externalAssembly"
>
Windows RT, UWP use the using syntax:
<Page ... xmlns:internal="using:rootnamespace.namespace"
xmlns:external="using:rootnamespace.namespace;assembly=externalAssembly"
>
