https://bugzilla.novell.com/show_bug.cgi?id=430759
Summary: InvalidOperationException when XmlSerializing a generic
collection (You must implement a default accessor on
<MyCollection> because it inherits from ICollection)
Product: Mono: Class Libraries
Version: 1.9
Platform: x86
OS/Version: Ubuntu
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Sys.XML
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
QAContact: mono-bugs@lists.ximian.com
Found By: ---
Created an attachment (id=242375)
--> (https://bugzilla.novell.com/attachment.cgi?id=242375)
Example application
The following exception is raised when serializing a collection to XML.
However the issue only occurs if the object is a generic collection without an
'integer' index:-
"System.InvalidOperationException: You must implement a default accessor on
<MyCollection> because it inherits from ICollection"
Example code is attached. It has been compiled with both gmcs (mono) and csc
(windows). The .NET compiled version will successfully write the out.xml file.
The mono compiled version will display the unhandled exception.
Looking at the mono code online, I think the issue is in:-
/trunk/mcs/class/System.XML/System.Xml.Serialization/TypeData.cs
In the method 'GetIndexerProperty'. It seems that GetIndexerProperty is
incorrectly looking for an int type for an indexer. Whereas the example
application attached only has a string indexer.
As a hack I am able to add an int indexer which always returns null. This then
works and the object is correctly serialized. Thus proving that it doesn't
actually require the indexer to be an int.
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