Hi,

There appears to be a difference in how null arrays and collections
are deserialized using XmlSerializer.  A null array is serialized into
nothing, then deserialized back to null again (which one could argue
is the correct behaviour), while a collection is serialized into
nothing (like the array) but then deserialized into a collection
instance with 0 elements.  Obviously, you'd have trouble telling the
difference between a null collection and an empty one after
serilization.

For example, the class below would deserialize to an instance with
MyArray = null and MyCollection = StringCollection with 0 elements
(the data members could just as well be properties).

public class Foo
{
   public string[] MyArray = null;
   public StringCollection MyCollection = null;
}

Is there a solution or at least a workaround to this problem?

Cheers,
Ryan

Error using XMLTextReader to read XMLDocument
Date Formate when using ds.WriteXml
Restrictions on Attributes in XML Schema.
app.config xml file and application blocks
Determining if an Attribute is Allowed by the Schema