XML namespace in xml Serialization

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SBML is a kind of file format standard in the systems biology, and it is base on the xml file format. when i using the xml Serialization in vb.net to read the sbml file, then i get a problem, the xml namespace is not correct, so the program throw a exception to me:

An unhandled exception of type 'System.InvalidOperationException' occurred in System.Xml.dll

Additional information: There is an error in XML document (2, 2).

i think this error occur in the position of xml root node in a xml file :

XML

<sbml xmlns="http://www.sbml.org/sbml/level2" version="1" level="2">

line 2 , and the position at xmlns attribute.

i compare the sbml file with the normal xml file, easily found out that the namespace in a xml root node is diferrent:

XML

<MetaCyc xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

so how to deal with this problem when i using the xml Serialization in vb.net to read the sbml file.

Posted 9-Oct-13 20:18pm

Mr. xieguigang 谢桂纲

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Bernhard Hiller 10-Oct-13 3:35am

How did you create the classes which correspond to the types described in SBML?

Mr. xieguigang 谢桂纲 10-Oct-13 7:14am

just define a class follow the offical instruction pdf

Namespace MetaCyc.File.SBML

<system.xml.serialization.xmlroot("sbml")>
Public Class Xml
<system.xml.serialization.xmlattribute> Public Property version As Integer
<system.xml.serialization.xmlattribute> Public Property level As Integer

<system.xml.serialization.xmlelement> Public Model As ModelF

Public Shared Widening Operator CType(Path As String) As LANS.SystemsBiology.Assembly.MetaCyc.File.SBML.Xml
'从文件反序列化
Using fs As New System.IO.FileStream(Path, System.IO.FileMode.OpenOrCreate)
Return DirectCast(New System.Xml.Serialization.XmlSerializer(GetType(Xml)).Deserialize(fs), Xml)
End Using
End Operator
End Class
End Namespace

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Bernhard Hiller · Answer 1 · 2013-10-10T02:22:00

Solution 1

Before you can deserialize the data, you must define the required classes. You'll need the xsd file (i.e. XML schema) and xsd.exe for that prupose. For more details, see my article "Bernie’s Trackviewer[^]", where I described that with GPX files (gps data encoded in XML).

Posted 10-Oct-13 2:22am

Bernhard Hiller