Binding, XPath & Namespaces

Does anyone know if its possible to use an XPath binding into XML that uses
namespaces?

For example, this doesn't work, because I haven't defined the namespaces:

<Grid>
<Grid.Resources>
<XmlDataProvider x:Key="data">
<data:root xmlns:data="http://data">
<data:item>blah</data:item>
</data:root>
</XmlDataProvider>
</Grid.Resources>
<TextBlock Text="{Binding Source={StaticResource data}, XPath=/data:root/data:item}"
/>
</Grid>


Instead I get the exception:
XPathException:Namespace Manager or XsltContext needed. This query has a
prefix, variable, or user-defined function.

But, how can I provide it?

- Doug

Doug wrote:

> Does anyone know if its possible to use an XPath binding into XML that
> uses namespaces?
>
> ... code snipped for brevity ...
>
> But, how can I provide it?

This[1] should explain it.

HTH,
Drew

[1] http://winfx.msdn.microsoft.com/libr...e18fc4284b.asp

Wow, how on earth did I not find that! Thanks!

- Doug

> Doug wrote:
>
>> Does anyone know if its possible to use an XPath binding into XML
>> that uses namespaces?
>>
>> ... code snipped for brevity ...
>>
>> But, how can I provide it?
>>
> This[1] should explain it.
>
> HTH,
> Drew
> [1]
> http://winfx.msdn.microsoft.com/libr.../library/en-us
> /wcp_conceptual/html/a47c832f-dc84-48f2-96d5-cde18fc4284b.asp
>

Unfortunately I can't work out what this maps to in the November SDK.

XmlDataNameSpaceManager is gone. Now it looks like it might be the System.Xml.XmlNamespaceManager
from System.Xml.dll, but I'm having a bit of trouble creating it with XAML.

- Doug

> Wow, how on earth did I not find that! Thanks!
>
> - Doug
>
>> Doug wrote:
>>
>>> Does anyone know if its possible to use an XPath binding into XML
>>> that uses namespaces?
>>>
>>> ... code snipped for brevity ...
>>>
>>> But, how can I provide it?
>>>
>> This[1] should explain it.
>>
>> HTH,
>> Drew
>> [1]
>> http://winfx.msdn.microsoft.com/libr...=/library/en-u
>> s
>> /wcp_conceptual/html/a47c832f-dc84-48f2-96d5-cde18fc4284b.asp

Looks like I jumped the gun.

XmlDataNameSpaceManager which was a subclass of XmlNamespaceManager has been
removed. Instead this can be done using the utility subclass XmlNamespaceMappingCollection
(probably just the same thing with a new name). For example:

<XmlNamespaceMappingCollection x:Key="myNamespaces">
<XmlNamespaceMapping Prefix="y" Uri="http://schemas.somecompany.com/12/2005/y"
/>
</XmlNamespaceMappingCollection>

- Doug

> Unfortunately I can't work out what this maps to in the November SDK.
>
> XmlDataNameSpaceManager is gone. Now it looks like it might be the
> System.Xml.XmlNamespaceManager from System.Xml.dll, but I'm having a
> bit of trouble creating it with XAML.
>
> - Doug
>
>> Wow, how on earth did I not find that! Thanks!
>>
>> - Doug
>>
>>> Doug wrote:
>>>
>>>> Does anyone know if its possible to use an XPath binding into XML
>>>> that uses namespaces?
>>>>
>>>> ... code snipped for brevity ...
>>>>
>>>> But, how can I provide it?
>>>>
>>> This[1] should explain it.
>>>
>>> HTH,
>>> Drew
>>> [1]
>>> http://winfx.msdn.microsoft.com/libr...l=/library/en-
>>> u
>>> s
>>> /wcp_conceptual/html/a47c832f-dc84-48f2-96d5-cde18fc4284b.asp