How does the default xml namespace work in XAML?

Question

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

How is this url mapped to .NET namespaces? Can you give an example how to do the same thing for custom .NET classes/namespaces? Is it an attribute that has to be defined on the namespace itself?

Or is it a matter or using C# aliases as in?:

using alias = FullNamespace

Thomas Levesque · Accepted Answer · 2010-03-25 16:57:39Z

4

The mapping is done using the XmlnsDefinition attribute. For instance :

[assembly: XmlnsDefinition("http://schemas.microsoft.com/winfx/2006/xaml/presentation", "System.Windows.Data")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/winfx/2006/xaml/presentation", "System.Windows")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/winfx/2006/xaml/presentation", "System.Windows.Controls.Primitives")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/winfx/2006/xaml/presentation", "System.Windows.Media.Animation")]
[assembly: XmlnsDefinition("http://schemas.microsoft.com/winfx/2006/xaml/presentation", "System.Windows.Input")]

(code from PresentationFramework.dll extracted with Reflector)

answered Mar 25, 2010 at 16:57

Thomas Levesque

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1 Comment

Thomas Levesque Over a year ago

Yes, but I wouldn't recommend it, because it could cause conflicts between your classes and those from the standard WPF namespaces

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