[VB.NET] Piccolo aiuto con una variabile Byte ...

[w_t]

Ho tradotto un codice da C# a VB.NET

ho trovato un solo errore, non so come tradurre il rigo:

come si vede nel commento, in C# funziona cosi: '( in C# ) ---> Byte[] RecvBytes = new Byte[2256];


in VB.NET cosi non da errore ma non mi funziona
Dim RecvBytes(2256) As Byte


se faccio cosi mi dice che Byte non ha costruttori....
Dim RecvBytes As Byte New Byte(2256)


Quale e' il metodo giusto ???



PS. di seguito al codice VB.NET ho riportato l'originale commentato in C#

Imports System
Imports System.Net
Imports System.Net.Sockets
Imports System.Text

Module Module1

    Sub Main()

        'scelgo l'host 
        Dim IPHost As IPHostEntry = Dns.Resolve("localhost") 'IPHostEntry(IPHost = Dns.Resolve("localhost"))
        Console.WriteLine(IPHost.HostName)

        Dim aliases() As String = IPHost.Aliases 'string []aliases = IPHost.Aliases

        Dim addr As IPAddress() = IPHost.AddressList 'IPAddress[] addr = IPHost.AddressList
        Console.WriteLine(addr(0))

        Dim ep As EndPoint = New IPEndPoint(addr(0), 80) 'EndPoint ep = new IPEndPoint(addr[0],80)

        Dim sock As Socket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp) 'Socket(sock = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))

        sock.Connect(ep)
        If sock.Connected Then Console.WriteLine("OK")

        Dim ASCII As Encoding = Encoding.ASCII 'Encoding = ASCII = Encoding.ASCII


        Dim protocol As String = "HTTP/1.0" 'string protocol="HTTP/1.0" ; 
        Dim br As String = "\r\n" 'string br="\r\n" ; 
        Dim target As String = "/phpinfo.php" 'string target="/phpinfo.php" ; 


        Dim req_body As String = "" 'string req_body="" ;
        req_body += "&to=5" 'req_body+="&to=5"; 


        Dim headers As String = "POST " + target + " " + protocol + br 'string headers="POST "+target+" "+protocol+br ; 
        headers += "Content-Type: application/x-www-form-urlencoded" + br 'headers+="Content-Type: application/x-www-form-urlencoded"+br ; 
        headers += "Content-Length: " + req_body.Length.ToString + br + br 'headers+="Content-Length: "+req_body.Length+br+br ;


        Dim ByteGet As Byte() = ASCII.GetBytes(headers + req_body) 'Byte[] ByteGet = ASCII.GetBytes(headers+req_body); 

        '( in C# ) ---> Byte[] RecvBytes = new Byte[2256]; 
        Dim RecvBytes(2256) As Byte '= New Byte(2256) '### se faccio cosi mi dice che Byte non ha costruttori.... ###

        sock.Send(ByteGet, ByteGet.Length, 0) 'sock.Send(ByteGet, ByteGet.Length, 0); 
        Dim bytes As Int32 = sock.Receive(RecvBytes, 0, RecvBytes.Length, 0) 'Int32 bytes = sock.Receive(RecvBytes,0, RecvBytes.Length, 0); 
        Dim strRetPage As String = "" 'string strRetPage=""; 
        strRetPage = ASCII.GetString(RecvBytes, 0, RecvBytes.Length) 'strRetPage = ASCII.GetString(RecvBytes, 0,RecvBytes.Length); 
        Console.WriteLine(strRetPage)


        strRetPage = Nothing 'strRetPage = null 
        strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes) 'strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes); 
        While bytes > 0
            bytes = sock.Receive(RecvBytes, 0, RecvBytes.Length, SocketFlags.Peek)
            strRetPage = strRetPage + ASCII.GetString(RecvBytes, 0, bytes)
            Console.WriteLine(strRetPage)
        End While
        sock.Shutdown(SocketShutdown.Both)
        sock.Close()


        'STOP codice
        Console.WriteLine()

    End Sub

End Module

[cassano]

se è una matrice cosi

Dim RecvBytes(2256) as byte

[w_t]

OK, Funziona, molte grazie, mi hai fatto un gran piacere.

Emm!!!
pero ho un altro problema ora...............


1) Invio la Stringa per la Query a PHP, e fin qui' tutto OK!
2) Mi ritorna uno Stream di dati e cioe' un elenco di nomi di "Agenti" (vedi codice...)
3) Dovrei potere esplodere questa stringa di ritorno in tante sottostringhe contenenti un nome ciascuna, per poi popolarci la mia ListView


se fossi in PHP "esploderei la stringa dato un carattere da decidere", in un Array di dati, per poi fare un ciclo "foreach" Popolando la "ListView".


ma in VB.NET non so come si fa per esplodere una stringa .........

        Dim lipa As IPHostEntry = Dns.Resolve("localhost")
        Dim addr As IPAddress() = lipa.AddressList
        Dim lep As New IPEndPoint(lipa.AddressList(0), 80)
        Dim s As New Socket(lep.Address.AddressFamily, SocketType.Stream, ProtocolType.Tcp)
        Try
            s.Connect(lep)
        Catch e As Exception
            MsgBox(("Exception Thrown: " + e.ToString()))
        End Try

        Dim br As String = vbCrLf
        Dim protocol As String = "HTTP/1.0"
        Dim target As String = "/phpinfo.php"

        Dim body As String = "sql=SELECT Nome_Agente FROM Agenti"

        Dim headers As String = "POST " & target & " " & protocol & br
        headers += "Content-Type: application/x-www-form-urlencoded" & br
        headers += "Content-Length: " & body.Length.ToString & br & br

        Dim msg As Byte() = Encoding.ASCII.GetBytes(headers & body)
        Dim i As Integer = s.Send(msg, 0, msg.Length, SocketFlags.None)


        Dim RecvBytes(1024) As Byte
        Dim strRetPage As String = Nothing
        Dim ASCII As Encoding = Encoding.ASCII
        Dim bytes As Int32 = s.Receive(RecvBytes, RecvBytes.Length, 0)


        'OUTPUT
        MsgBox(Encoding.ASCII.GetString(RecvBytes))
        s.Shutdown(SocketShutdown.Both)
        s.Close()