WCF, xml creates ExtensionData tag which I want to remove

Question

I create a 'List' from WCF project, and I am consuming the service in test project. Using XMLSerializer in javascript, I am able to create XML result. However this 'ExtensionData' tag is very annoying.

For example,

<?xml version="1.0"?>
<ArrayOfStudent xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<Student>
    <ExtensionData/>
    <Name>Chris</Name>
    <Age>72</Age>
</Student>
<Student>
    <ExtensionData/>
    <Name>Christine</Name>
    <Age>2400</Age>
</Student>

I tried adding

[ServiceBehaviorAttribute(IgnoreExtensionDataObject = true)]
public class StudentService: IStudentService
{
}

but, no luck..

Answer 1

Did you try to create a new class for List and use [CollectionDataContractAttribute], because in your case .Net creates a new Type for List and name it as ArrayOfStudent.

This may solve your problem.

public StudentList ListStudents()
{
    // return new List<student>();
       return new StudentList(); 
}

[CollectionDataContract()]
public class StudentList : List<Student>
{}