Need help with Winsock. thanks

[richARD.net]

Guys, i'm working on converting a VB 6.0 program to VB.net.

It was a client progam connected to the server by using TCP/IP. In VB 6.0, it was able to send double type straight away to the server using COM component. The problem is when using VB.net socket class, it only allows me to send byte array instead of double type. Is there any way i can send a double variable ? because i don't want to change the server program.

Thanks

[ntg]

...using COM component.

Which COM component was that ?

Cheers,
NTG

[richARD.net]

it is the winsock in VB 6.0

[ntg]

When you did a Winsock.SendData DoubleVar, VB6 took that double and converted it to a byte array. I'm really not sure how (or if) you could achieve the same result in .Net without too much trouble. The .Net way would be to serialize an object to send (whether that is a double or any other object) into a memory stream, send the stream and do the reverse process on the other end.

However, if you can't change the server that could be a problem. This may be an overkill and I hope someone can post a better suggestion, buf if you serialize a double and you copy the memory stream's contents into a byte array, the eight bytes before the last byte of the array are the exact bytes that would be send by the equivalent VB6 process. This is a messy process to say the least...if you can't find another way, you can always use COM Interop and instantiate winsock in your .Net program.

'Code to serialize a double
        Dim o As System.IO.MemoryStream = New MemoryStream
        Dim oo As Double = 123.45
        Dim bBuf(128) As Byte
 
        Dim Buffer As New MemoryStream
        Dim Formatter As New Runtime.Serialization.Formatters.Binary.BinaryFormatter
        Formatter.Serialize(Buffer, oo)
        Buffer.Position = 0
        Buffer.WriteTo(o)
        Buffer.Close()
        bBuf = o.ToArray

Cheers,
NTG

[richARD.net]

Thanks a lot for ur suggestions.

Actually i was already using a winsock COM component without any problem in sending data over to the server. but i realized later that the receiving data part can't use "DataArrival" method anymore so i decided to switch to socket class.