Serialization Question

[Tiraman :-\)]

Hi,

i have a StreamWriter that hold a System.Net.Sockets.NetwrokStream
and the StreamWriter Object Hold An ArrayList which
i would like to Serialize And Send it back to the client via the
StreamWriter.Flush()
Dim writer As New IO.StreamWriter(System.Net.Sockets.TcpClient.GetStream)

writer.Write(myArray)

Dim binF As New BinaryFormatter

how can i Serialize it ?

Thanks!

T

 

[Guest]

Is this what you want?

Dim binF As New BinaryFormatter
Dim writer As New IO.StreamWriter(System.Net.Sockets.TcpClient.GetStream)
binF.Serialize(writer, myArray)

Lance

 

[Tiraman :-\)]

yes,

but this what i tried and it didn't work for me since the
BinaryFormatter.Serialize doesn't accept a StreamWriter

do you know other way to implement this kind of operation ?

 

[Cor Ligthert]

Hi Tiraman,

This sample I once made should do the job for you.

I hope this helps?

Cor

\\\
Private Sub Form1_Load(ByVal sender _
As Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim a As New ArrayList
a.Add("I ")
a.Add("hope ")
a.Add("this ")
a.Add("helps?")
Dim b As String = SerializeArraylist(a)
MessageBox.Show(b)
Dim c As ArrayList = DeserializeArraylist(b)
End Sub
Private Function SerializeArraylist(ByVal _
arraylst As ArrayList) As String
Dim bf As New
Runtime.Serialization.Formatters.Binary.BinaryFormatter
Dim mem As New IO.MemoryStream
bf.Serialize(mem, arraylst)
Return Convert.ToBase64String(mem.ToArray())
End Function
Private Function DeserializeArraylist(ByVal _
arraystring As String) As ArrayList
Dim bf As New
Runtime.Serialization.Formatters.Binary.BinaryFormatter
Dim mem As New
IO.MemoryStream(Convert.FromBase64String(arraystring))
Return DirectCast(bf.Deserialize(mem), ArrayList)
End Function
///

 

[Tiraman :-\)]

Hi Cor ,

it is a good example but it is not cover my problem.

I have a NetworkStream Which I m getting into the StreamWriter which i would
like to serialize.

how can i do that ?

Thanks!

Dim writer As New IO.StreamWriter(System.Net.Sockets.TcpClient.GetStream)

 

[Cor Ligthert]

Hi Cor ,

it is a good example but it is not cover my problem.

I have a NetworkStream Which I m getting into the StreamWriter which i would
like to serialize.

how can i do that ?

Thanks!

Yes and what is wrong with it the sample first serialize and than deserilize
in one sample.

You have to use serialize, stream, and deserialize, however that was not the
problem I thought?

Cor

 

[Tiraman :-\)]

Hello Cor,

I m not sure that i understood you so here is my example and i will be happy
if you let me know where , what and why is the problem
Private client As TcpClient

Sub xxx(ByVal obj As Object)

SyncLock client.GetStream


Dim sw As New IO.StreamWriter(client.GetStream)

sw.Write(CType(obj,ArrayList))

Dim bf As New BinaryFormatter

bf.Serialize(sw, obj)


sw.Flush()
sw.Close()

End SyncLock

End Sub



Thanks!

 

[Cor Ligthert]

Tiraman this is the serialization part in my code

Dim bf As New Runtime.Serialization.Formatters.Binary.BinaryFormatter
dim mem As New IO.MemoryStream
bf.Serialize(mem, arraylst)
Dim myString as STring = Convert.ToBase64String(mem.ToArray())

When I look at your code I see

Private client As TcpClient

Sub xxx(ByVal myArray As as Arraylist) ' passing it as arraylist saves
casting

Dim sw As New IO.StreamWriter(client.GetStream)
Dim bf As New BinaryFormatter

dim mem As New IO.MemoryStream
bf.Serialize(mem, myArray)
Dim myString as String =
Convert.ToBase64String(mem.ToArray())
sw.Write(myString)

sw.Flush()
sw.Close()

Than I think it can be something like this, not tried,

I hope this helps?

Cor

 

[Cor Ligthert]

Hi Tiraman,

Without any code, what do you think I am?

Cor

 

[Tiraman :-\)]

Hi Cor,

Now the Serialize ok but i m getting the following error in the Deserialize
method.

System.Runtime.Serialization.SerializationException: No map for object
1953724755.
at
System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObject()
at System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
at
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(Head
erHandler handler, __BinaryParser serParser, Boolean fCheck,
IMethodCallMessage methodCallMessage)
at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(S
tream serializationStream, HeaderHandler handler, Boolean fCheck,
IMethodCallMessage methodCallMessage)
at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(S
tream serializationStream, HeaderHandler handler)
at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(S
tream serializationStream)
at frmMain.DoRead(IAsyncResult ar) in frmMain.vb:line 769"

line 769 ---> MyArray = DirectCast(bf.Deserialize(ns), ArrayList)

any idea ?

Thanks !

 

[Cor Ligthert]

Tiraman,

Roughly written in this message.

\\\
dim ns as new IO.streamreader
Dim ns As NetworkStream = client.GetStream()
dim arraystring as string = ns.read
Dim bf As New BinaryFormatter
Dim mem As New IO.MemoryStream(Convert.FromBase64String(arraystring))
dim arraylist as arraylist = DirectCast(bf.Deserialize(mem), ArrayList)
///

I hope this goes as well

Cor

 

[Tiraman :-\)]

A Good Guy

here is the code,

Dim ns As NetworkStream = client.GetStream()

Dim bf As New BinaryFormatter

Dim myarray As New ArrayList

myarray = DirectCast(bf.Deserialize(ns), ArrayList)

 

[Cor Ligthert]

Sorry Tiraman,

Not direct, my sugestion is to put this question again as a new thread in
the group.

Cor

 

[Tiraman :-\)]

Hi Cor,
Once Again Thanks for your help.

now every thing working fine but i still have one problem.
with the Convert.FromBase64String i can work with very small strings and i
would like to
work with more then 64 bit.

any idea ?

Thanks

 

[Tiraman :-\)]

Ok,
Thanks for your help.
bye

Sorry Tiraman,

Not direct, my sugestion is to put this question again as a new thread in
the group.

Cor