how to access fields of deserialized object - serialization

Question

I have a UDP client server application which is in c#, where the server sends the serialized object to client.
At the server end object is deserialized. Now my question is how can I access the fields or data members of the object?
Any suggestions or help would be appreciated.
Thanks
Vani
This is the server code which sends a object.
namespace UDP_Client
{
[Serializable]
class SendObject
{
public int a;
public int b;
public int c;
public SendObject()
{
a = 0;
b = 0;
c = 0;
}
}
class ClientSocket
{
static void Main(string[] args)
{
SendObject obj= new SendObject();
obj.a = 100;
obj.b = 200;
obj.c = 300;
MemoryStream memorystream = new MemoryStream();
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(memorystream,obj);
Send(obj.ToString());
}
static void Send(string Message)
{
Socket s = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPAddress broadcast = IPAddress.Parse("127.0.0.1");
byte[] sendbuffer = Encoding.ASCII.GetBytes(Message);
IPEndPoint ep = new IPEndPoint(broadcast, 10000);
s.SendTo(sendbuffer, ep);
s.Close();
}
}
}
This is the client which receives the object coming from server.
UdpClient listener = new UdpClient(listenPort);
IPEndPoint groupEP = new IPEndPoint(IPAddress.Any, listenPort);
byte[] bytes = listener.Receive(ref groupEP);
MemoryStream stream = new MemoryStream();
BinaryFormatter formatter = new BinaryFormatter();
stream.Seek(0, SeekOrigin.Begin);
Object obj = (Object)formatter.Deserialize(stream);
int val1 = obj.a;//This is what i want to do.