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Asked: 2026-05-12T07:20:29+00:00

For example, the WPF namespace is: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" If I define my own namespace, should

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For example, the WPF namespace is:

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

If I define my own namespace, should it also start with http? Isn’t http misleading?

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  1. Editorial Team

    The W3C Document defining XML Namespaces says (quoting) :

    Definition: An XML namespace is
    identified by a URI reference
    [RFC3986]

    And RFC 3986 says (quoting) :

    1.1.1. Generic Syntax

    Each URI begins with a scheme name,
    as defined in Section 3.1, that
    refers to a specification for
    assigning identifiers within that
    scheme.

    So I guess using http:// is what’s closest to the standard — as HTTP is the most common scheme used on the net.

    In addition, as there can be only one owner for a domain name, it allows each company to use it’s URL in its namespaces.

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