how to get the Array list in server side - vb.net

Question

I have created client and server application
i am trying to send the Arraylist from cilent to server
the Arraylist is transfer from client but how to use that Array list in server to get the information of ArrayList
while i am printing the message in server side it showing System.collection.ArrayList
below is my code
Client Code
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Try
Client = New TcpClient("192.168.0.226", 8080)
Dim Writer As New StreamWriter(Client.GetStream())
detailList.Add(txtname.Text)
detailList.Add(txtadd.Text)
For Each i As String In detailList
Console.WriteLine(i)
Next
Writer.Write(detailList)
' Writer.Write("</> " & txtaddress.Text & " <\>")
MsgBox("datas send ")
Writer.Flush()
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
Server Code
Private Sub Timer1_Tick(sender As System.Object, e As System.EventArgs) Handles Timer1.Tick
Dim message As String
Dim nStart As Integer
Dim nLast As Integer
If listener.Pending = True Then
message = ""
cline = listener.AcceptTcpClient()
Dim reder As New StreamReader(cline.GetStream)
While reder.Peek > -1
message &= Convert.ToChar(reder.Read()).ToString
End While
If message.Contains("</>") Then
nStart = InStr(message, "</>") + 10
nLast = InStr(message, "<\>")
message = Mid(message, nStart, nLast)
End If
Console.WriteLine(message)
txtname.Text = message
Label1.Text = message
' saveData()
End If
End Sub
Public Sub saveData()
Dim cmd As SqlCommand
sc.Open()
cmd = New SqlCommand("insert into demo values('" + txtname.Text + "')", sc)
cmd.ExecuteNonQuery()
msg = MsgBox("data save")
sc.Close()
End Sub

Answer 1

On this line in Button1_Click:
Writer.Write(detailList)
You're using the overloaded version of Write that takes an Object. In order to write out something meaningful for Objects, .NET has internally called detailList's ToString() method. The ToString() method here is what's returning the string "System.Collection.ArrayList".
So, you aren't sending an actual ArrayList implementation to your server, but simply its string representation (the result of calling ToString() on it).
In order to send objects over TCP, you will need to serialize it first, and then deserialize it on the server side. You could use any number of binary, XML, JSON, etc. formatters to do it, or write your own.