public class Service1 : System.Web.Services.WebService

{

    [WebMethod]

    public AdvertisementWS HelloWorld()

    {

        return new AdvertisementWS();

    }

}

public class AdvertisementWS

{

    public List<string> Before { get; set; }

    public List<string> After { get; set; }

    public AdvertisementWS()

    {

        Before = new List<string>() { "abf" };

        After = new List<string>() { "123" };

    }

}

צד הלקוח: כלומר (אנחנו)

public class Advertisement

{

    public string[] Before { get;set; }

    public string[] After { get; set; }

    public static Advertisement ConvertFromObject(object obj)

    {

        Advertisement res = new Advertisement();

        Type type = obj.GetType();

        res.Before = (string[])type.GetProperty("Before").GetValue(obj, null);

        res.After = (string[])type.GetProperty("After").GetValue(obj, null);

        return res;

    }

}

public class Handler1 : IHttpHandler

{

    public void ProcessRequest(HttpContext context)

    {

        context.Response.ContentType = "text/plain";

        JavaScriptSerializer serializer = new JavaScriptSerializer();

        context.Response.Write(serializer.Serialize(new AdvertisementHandler()));

    }

}

public class AdvertisementHandler

{

    public List<string> Before { get; set; }

    public List<string> After { get; set; }

    public AdvertisementHandler()

    {

        Before = new List<string>() { "abf" };

        After = new List<string>() { "123" };

    }

}

JavaScriptSerializer serializer = new JavaScriptSerializer();

WebClient client = new WebClient();

string str = client.DownloadString("http://localhost:60905/Handler1.ashx");

Advertisement abc = serializer.Deserialize<Advertisement>(str);