using System;

using System.Xml.Linq;

using System.Collections.Generic;

​

public interface ISerializer

{

    XDocument Serialize<T>(T dataDto);

    T Deserialize<T>(XDocument document);

}

​

public class Serializer : ISerializer

{

    // Serializer map

    private static readonly Dictionary<Type, Func<object, XDocument>> serializers = new  Dictionary<Type, Func<object, XDocument>>

    {

        { typeof(PatientDto), x => PatientDtoSerializer.Serializer((PatientDto)x) },    

    };

    // Deserializer map

    private static readonly Dictionary<Type, Func<XDocument, object>> deserializers = new  Dictionary<Type, Func<XDocument, object>>

    {

        { typeof(PatientDto), x => PatientDtoSerializer.Deserializer(x) },  

    };

    public XDocument Serialize<T>(T dataDto)

    {

        return serializers[typeof(T)](dataDto);

    }

    public T Deserialize<T>(XDocument document)

    {

        return (T)deserializers[typeof(T)](document);

    }

}

​

public class PatientDto

{

    // add properties

}

​

// One serializer per type

public static class PatientDtoSerializer

{

    public static XDocument Serializer(PatientDto item)

    {

        // do stuff

        return null;    

    }

    public static PatientDto Deserializer(XDocument document)

    {

        // do stuff

        return null;    

    }

}