Re: Can't serialize ArrayList

go <>
Tue, 03 Nov 2009 12:53:45 +0100
Hello Steven. Always when I want to serialize a type I start with
creating an xml-schema for the type and then (auto-)generate the
classes. I think it saves time and trouble.

Steven skrev:

Hi guys

I'm trying to serialize a class that includes an ArrayList member. Here's
the class:

    public class InstantiationData
        public string InstanceTaskAssignedTo;
        public string InstanceMailMsg;
        public DateTime InstanceDueDate;
        public Approvers ADApproversGroup; // this is the ArrayList member //

All other members of this class serialize properly, but the Approvers member
(a class which implements IEnumerator) does not. I've set a breakpoint
immediately after the Serialize method is called and inspected the object
which looks like this:

  <?xml version="1.0" ?>
 <InstantiationData xmlns:xsi=""
  <InstanceMailMsg>Test message</InstanceMailMsg>
  <ADApproversGroup />

As you can see, the ADApproversGroup node is empty when serialized, but the
class instance shows 2 elements in the arrayList.

I've read that when serializing, it helps to specify the type of object I'm
serializing which I've done as follows:

XmlSerializer serializer = new XmlSerializer(typeof(InstantiationData));

But this doesn't help. Any ideas how to serialize an ArrayList member of a


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