serialize c# class with xsi:type attribute

This may be a simple question, but I'm struggling to find the answer
to it, so any suggestions would be greatly appreciated.... I want to
know if there's some way to ensure that the xsi:type attribute is
included when serializing a c# class.

The basic situation is this:
I have a class, ClassB which derives from ClassA.
ClassC contains a  list of ClassB, which I want to serialize as an
XmlArray of 'bListItem's as per the code below:

    public class ClassA
        private string _id;

        public string Id
            get { return _id; }
            set { _id = value; }

    public class ClassB : ClassA
        private string _name;

        public string Name
            get { return _name; }
            set { _name = value; }

    public class ClassC
        private string _id;
        private List<ClassB> _bList;

        public string Id
            get { return _id; }
            set { _id = value; }

        [XmlArray("bList"), XmlArrayItem("bListItem")]
        public List<ClassB> BList
            get { return _bList; }
            set { _bList = value; }


Now... this serializes to the following XML:

 <?xml version="1.0" encoding="utf-8" ?>
<classC xmlns:xsi=""
xmlns:xsd="" id="C1">
         <bListItem id="B1" name="My B Item" />

What I want to do is have the xsi:type of bListItem come through in
this element like so:

 <?xml version="1.0" encoding="utf-8" ?>
<classC xmlns:xsi=""
xmlns:xsd="" id="C1">
         <bListItem xsi:type="classA.classB" id="B1" name="My B Item" /

Can anyone tell me how to do this?
Thanks in advance...

12/10/2007 12:36:14 PM
dotnet.xml 7266 articles. 0 followers. Follow

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