[IronPython] XmlDocument or XDocument in Python/Silverlight

[Jonathan Slenders]

How does IronPython receive the results of GetDescendants() or Elements()
from the Linq library.

PS C:\Documents and
Settings\Jonathan\Desktop\IronPython-2.0B3-Bin\IronPython-2.0B3> .\ipy.exe
IronPython 2.0 Beta (2.0.0.3000) on .NET 2.0.50727.1433
Copyright (c) Microsoft Corporation. All rights reserved.
>>>
>>> import clr
>>> clr.AddReference('System.Xml.Linq')
>>> from System.Xml.Linq import XDocument
>>> document = '<root><a>aaa</a><b>bbb</b><a>ccc</a></root>'
>>> XDocument.Parse(document).Element('root').Element('a')
<System.Xml.Linq.XElement object at 0x0000000000000031 [<a>aaa</a>]>
>>> XDocument.Parse(document).Element('root').Elements('a')
<System.Xml.Linq.XContainer+<GetElements>d__11 object at 0x0000000000000033
[System.Xml.Linq.XContainer+<GetElements>d__11]>
>>> for i in XDocument.Parse(document).Element('root').Elements('a'):
...     print i
...
>>>

The for loop doesn't return any result, but it also doesn't raise an
exception. The MSDN documentation has only examples for c# which all use the
"from ... select ...." syntax from Linq which isn't available here.

Jonathan




2008/6/18 Jonathan Slenders <jonathan at slenders.be>:

> Thank you, Michael
>
> I had to:
>
> import clr
> clr.AddReference('System.Xml.Linq')
>
>
>
> 2008/6/17 Michael Foord <fuzzyman at voidspace.org.uk>:
>
> Hello Jonathan,
>>
>> Do you need to add a reference to the assembly before importing from it?
>>
>> In the Silverlight chapter of IronPython in Action I use 'XmlReader' for
>> parsing XML. I have already (in an earlier chapter) provided a wrapper over
>> this that gives it a SAX like interface. The code worked unmodified on
>> Silverlight!
>>
>> Michael Foord
>>
>> Jonathan Slenders wrote:
>>
>>> Hello,
>>>
>>> It seems that XmlDocument isn't available in Silverlight. The Linq dll
>>> ("System.Xml.Linq.dll") is listed between the client libraries, but when I
>>> add them to my Silverlight manifest file
>>> and try:
>>>
>>> from System.Xml.Linq import XDocument
>>>
>>> The following error occurs: "ManagedRuntimeError, SetProperty failed"
>>>
>>> What's the recommended way to query XML documents? A good XML library is
>>> essential at the client for doing AJAX (in our case: APAX), I wonder in the
>>> first place why XmlDocument isn't in Silverlight by default.
>>> I don't want to use a SAX parser like XmlReader.
>>>
>>> Jonathan
>>>
>>>
>>> PS: When the XML parsing works, I can present a working APAX example for
>>> querying a mysql database. It returns row after row every time the client
>>> does a request for the next row. The javascript version works, and I'm
>>> porting it now to Silverlight/IronPython.
>>>  ------------------------------------------------------------------------
>>>
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>>> Users at lists.ironpython.com
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>>>
>>>
>>
>>
>> --
>> http://www.ironpythoninaction.com/
>> http://www.theotherdelia.co.uk/
>> http://www.voidspace.org.uk/
>> http://www.ironpython.info/
>> http://www.resolverhacks.net/
>>
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>
>
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