vb.nettcp通讯 vb tcp

VB.NET 如何通过TCP/IP协议通讯实现16进制数据的接收？

传输Integer 数据类型来传输比较方便.因为Integer vb.nettcp通讯的取值可以是0x0000-0xFFFF .当vb.nettcp通讯你把数据发送到目vb.nettcp通讯的主机后可以利用Hex() 把接收到vb.nettcp通讯的数据从十进制转换到十六进制..

相关问答

Q1: 用vb.net实现网络通信

用 vb.net socket通信

Dim th As Threading.Thread

2 Dim tcpl As System.Net.Sockets.TcpListener

3

4 Private Sub Form1_Load()Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

5 th = New System.Threading.Thread(New System.Threading.ThreadStart(AddressOf MyListen))

6 th.Start()

7 End Sub

8

9 Public Sub SendMessage()Sub SendMessage(ByVal IP As String, ByVal SendMsg As String)

10 Try

11 If IP "" Then

12 Dim tcpc As New System.Net.Sockets.TcpClient(IP, 5656)

13 Dim tcpStream As Net.Sockets.NetworkStream = tcpc.GetStream

14 Dim reqStream As New IO.StreamWriter(tcpStream)

15 reqStream.Write(SendMsg)

16 reqStream.Flush()

17 tcpStream.Close()

18 tcpc.Close()

19 End If

20 Catch ex As Exception

21 MsgBox(ex.Message.ToString)

22 End Try

23 End Sub

24 Private Sub MyListen()Sub MyListen()

25 Try

26 Dim ipAddress As System.Net.IPAddress = System.Net.Dns.Resolve(System.Net.Dns.GetHostName).AddressList(0)

27 tcpl = New System.Net.Sockets.TcpListener(ipAddress, 5656)

28 tcpl.Start()

29 While True

30 Dim s As System.Net.Sockets.Socket = tcpl.AcceptSocket()

31 Dim MyBuffer(1024) As Byte

32 Dim i As Integer

33 i = s.Receive(MyBuffer)

34 If i 0 Then

35 Dim lstrRec As String

36 Dim j As Integer

37 For j = 0 To i - 1

38 TextBox1.Text += Chr(MyBuffer(j)) ","

39 Next

40 End If

41 End While

42 Catch ex As Exception

43 MsgBox(ex.Message.ToString)

44 End Try

45 End Sub

46

47 Private Sub Button1_Click()Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

48 SendMessage("192.168.0.61", TextBox2.Text)

49 End Sub

Q2: VB.Net 关于路由器后TCP或UDP通讯问题 假设一台电脑192.168.0.1位于路由1.

端口不NAT，两个子网中的两端之间不可能通信。至少要有一方处在公网下或有路由端口映射，不必双方都映射。

建议题主找本计算机网络的书研读一下子网划分这块儿。

Q3: vb.net从一台主机通过socket同时向多台主机传送信息，如何操作？

用VB5 Winsock控件创建TCP/IP通讯程序 随着Windows 95中文版和Windows NT Server 4.0中文版的流行vb.nettcp通讯， Microsoft公司推出vb.nettcp通讯了相应平台上的开发软件: Visual Basic 5.0 中文企业 版。它为Windows环境下的网络开发提供了强大的工具vb.nettcp通讯，Winsock控件就是其中之一。 Winsock控件建立在TCP、UDP协议的基础上vb.nettcp通讯，完成与远程计算机的通信。即使对TCP/IP不太熟悉的用户，使用该控件也可以在十几分钟内创建一个简单的客户机/服务器程序。下面vb.nettcp通讯我们对Winsock控件的事件、方法、属性按其在程序中出现的顺序分别作详细的介绍，以便更好地理解程序源代码。

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