How to send/receive a serializable object in socket?

[ChopDown]

Hi, I want to send/receive a serializable object in socket:
==========sende r==========

Dim MyMessage As New MessageClass.Me ssage()
Dim client As New TcpClient
client.Connect( My.MySettings.D efault.Server,
My.MySettings.D efault.ServerPo rt)
Dim clientStream As NetworkStream = client.GetStrea m
Dim serializer As IFormatter = New BinaryFormatter ()
serializer.Seri alize(clientStr eam, MyMessage)
clientStream.Cl ose()

===========rece ive==========
Dim serializer As IFormatter = New BinaryFormatter ()
Dim listener As TcpListener = New TcpListener(IPA ddress.Any,
My.MySettings.D efault.Port)
listener.Start( )
Dim client As TcpClient = listener.Accept TcpClient
Dim clientStream As New NetworkStream(c lient.Client, False)
Dim ReciveMessage As MessageClass.Me ssage =
TryCast(seriali zer.Deserialize (clientStream2) , MessageClass.Me ssage)
MsgBox(ReciveMe ssage.ToString)

=============== =============== =

there are no problem. But when I put the receive function to a while
loop. I found that I can't get the second object. It shows some
exception.(in java, I can use Stream.flush; Stream.reset to fix it, but
I can't find the same in .net). Anyone can tell me
how to send/receive a serializable object in socket? (I want to write a
chat server/client, any other way?)
Thanks in advance.