How to manage namespace in .NET SoapFormatter?

Question

I am writing code that needs to be backward compatible with EXISTING remote code that uses SOAP to serialize some objects.

My difficulty is that I had to move some objects to new assemblies, so remote access does not work.

For example, I serialize an object using .NET SoapFormatter as follows:

Person p=new Person();
string path=@"c:\myfile.soap";
using (System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write))
{
    System.Runtime.Serialization.Formatters.Soap.SoapFormatter
    f = new System.Runtime.Serialization.Formatters.Soap.SoapFormatter();
    f.Serialize(fs, p);
    fs.Close();
}

The resulting xml is as follows:

<SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:clr="http://schemas.microsoft.com/soap/encoding/clr/1.0" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
    <SOAP-ENV:Body>
        <a1:Person id="ref-1" xmlns:a1="http://schemas.microsoft.com/clr/nsassem/Serialization/dotneat_net.Serialization%2C%20Version%3D0.0.0.0%2C%20Culture%3Dneutral%2C%20PublicKeyToken%3Dnull">
            <FirstName id="ref-3">Joe</FirstName>
            <LastName id="ref-4">Doe</LastName>
            <_Address id="ref-5">dotneat.net Street, Zaragoza, Spain</_Address>
            <_ZIPCode id="ref-6">50007</_ZIPCode>
        </a1:Person>
    </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

In this XML, I would like to have some control over xmlns in an a1: Person object:

<a1:Person id="ref-1" xmlns:a1="http://schemas.microsoft.com/clr/nsassem/Serialization/dotneat_net.Serialization%2C%20Version%3D0.0.0.0%2C%20Culture%3Dneutral%2C%20PublicKeyToken%3Dnull">

The reason is because my new Person object is not in the same assembly as the original object. Thus, later, when deserialization occurs (in older projects), it fails due to improper assembly.

xmlns? , [SoapType Namespace = "xxx" ] , . .

XML .

Answer 1

, SoapType.

[Serializable]
[System.Runtime.Remoting.Metadata.SoapType(XmlNamespace = "MY_NAMESPACE")]
public class Person
{
    public string FirstName;
    public string LastName;
    public string _Address;
    public string _ZIPCode;
}

XML-:

<SOAP-ENV:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:clr="http://schemas.microsoft.com/soap/encoding/clr/1.0" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
  <SOAP-ENV:Body>
    <i2:Person id="ref-1" xmlns:i2="MY_NAMESPACE">
      <FirstName id="ref-3">John</FirstName>
      <LastName id="ref-4">Doe</LastName>
      <_Address id="ref-5">otneat.net Street, Zaragoza, Spain</_Address>
      <_ZIPCode id="ref-6">50007</_ZIPCode>
    </i2:Person>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

. , .

Answer 2

SoapAttribute? XmlNamespace. , . Reflector, , SoapFormatter.Serialize. , .