I have inherited a project and I am trying to figure out why the
failing units tests that exist fail. I a, getting the following error
when I attempt serialization.
Any advice on what I should do to find the source of the problem would
be appreciated.
Thank you
Jeremy
Error 1 TestCase
'SuccessAssessB usiness.Success AssessBusinessT est.LinkedAsses sments'
failed: System.InvalidO perationExcepti on : There was an error
generating the XML document.
----System.InvalidO perationExcepti on : A circular reference was
detected while serializing an object of type
SuccessAssessBu siness.Manageme ntGroup.
at System.Xml.Seri alization.XmlSe rializer.Serial ize(XmlWriter
xmlWriter, Object o, XmlSerializerNa mespaces namespaces, String
encodingStyle, String id)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(XmlWriter
xmlWriter, Object o, XmlSerializerNa mespaces namespaces, String
encodingStyle)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(XmlWriter
xmlWriter, Object o, XmlSerializerNa mespaces namespaces)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(TextWriter
textWriter, Object o, XmlSerializerNa mespaces namespaces)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(TextWriter
textWriter, Object o)
at
SuccessAssessBu siness.SuccessA ssessBusinessTe st.LinkedAssess ments() in
C:\Inetpub\wwwr oot\SuccessAsse ss\Projects\Suc cessAssess
\SuccessAssessT est\SuccessAsse ssBusinessTest. cs:line 372
--InvalidOperatio nException
at
System.Xml.Seri alization.XmlSe rializationWrit er.WriteStartEl ement(String
name, String ns, Object o, Boolean writePrefixed,
XmlSerializerNa mespaces xmlns)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write8_Mana gementGroup(Str ing
n, String ns, ManagementGroup o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write9_Jobs ite(String
n, String ns, Jobsite o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write8_Mana gementGroup(Str ing
n, String ns, ManagementGroup o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write9_Jobs ite(String
n, String ns, Jobsite o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write12_Ass essment(String
n, String ns, Assessment o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write13_Ass essment(Object
o) C:\Inetpub\wwwr oot\SuccessAsse ss\Projects\Suc cessAssess
\SuccessAssessT est\SuccessAsse ssBusinessTest. cs 372
2  12013 
Jeremy,
XML serialization does not support circular references. This means that
one of the objects that you are trying to serialize holds onto another
object higher up in the object chain, which in turn causes your circular
reference. You need to make it so that the object does not reference itself
(directly or indirectly) and then the problem should go away.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m
"Jeremy Kitchen" <J.*********@gm ail.comwrote in message
news:11******** **************@ o5g2000hsb.goog legroups.com...
>I have inherited a project and I am trying to figure out why the
failing units tests that exist fail. I a, getting the following error
when I attempt serialization.
Any advice on what I should do to find the source of the problem would
be appreciated.
Thank you
Jeremy
Error 1 TestCase
'SuccessAssessB usiness.Success AssessBusinessT est.LinkedAsses sments'
failed: System.InvalidO perationExcepti on : There was an error
generating the XML document.
----System.InvalidO perationExcepti on : A circular reference was
detected while serializing an object of type
SuccessAssessBu siness.Manageme ntGroup.
at System.Xml.Seri alization.XmlSe rializer.Serial ize(XmlWriter
xmlWriter, Object o, XmlSerializerNa mespaces namespaces, String
encodingStyle, String id)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(XmlWriter
xmlWriter, Object o, XmlSerializerNa mespaces namespaces, String
encodingStyle)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(XmlWriter
xmlWriter, Object o, XmlSerializerNa mespaces namespaces)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(TextWriter
textWriter, Object o, XmlSerializerNa mespaces namespaces)
at System.Xml.Seri alization.XmlSe rializer.Serial ize(TextWriter
textWriter, Object o)
at
SuccessAssessBu siness.SuccessA ssessBusinessTe st.LinkedAssess ments() in
C:\Inetpub\wwwr oot\SuccessAsse ss\Projects\Suc cessAssess
\SuccessAssessT est\SuccessAsse ssBusinessTest. cs:line 372
--InvalidOperatio nException
at
System.Xml.Seri alization.XmlSe rializationWrit er.WriteStartEl ement(String
name, String ns, Object o, Boolean writePrefixed,
XmlSerializerNa mespaces xmlns)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write8_Mana gementGroup(Str ing
n, String ns, ManagementGroup o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write9_Jobs ite(String
n, String ns, Jobsite o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write8_Mana gementGroup(Str ing
n, String ns, ManagementGroup o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write9_Jobs ite(String
n, String ns, Jobsite o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write12_Ass essment(String
n, String ns, Assessment o, Boolean isNullable, Boolean needType)
at
Microsoft.Xml.S erialization.Ge neratedAssembly .XmlSerializati onWriterAssessm ent.Write13_Ass essment(Object
o) C:\Inetpub\wwwr oot\SuccessAsse ss\Projects\Suc cessAssess
\SuccessAssessT est\SuccessAsse ssBusinessTest. cs 372
A common gotcha when using xml serialization; if your objects have a
logical parent/child (tree) structure, then the simple fix is to apply
[XmlIgnore] to any "parent" relationships, so that it is serialized in
a downwards (only) route. Unfortunately, these relationships will need
repairing at t'other end. One solution here is custom serialization
(IXmlSerializab le), but this is probably overkill. Maybe just fixup
manually after deserializing.
For reference, note that the DataContractSer ializer (.Net 3.0) can (if
asked nicely) support both "graph" and "tree" serialization; but of
course the xml will look different...
Marc
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when I attempt serialization.
Any advice on what I should do to find the source of the problem would
be appreciated.
Thank you
Jeremy
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