关于vb.net实现网络通信的信息
VB.NET 2003中 想做一个基于TCP/IP的网络通信程序
就可以了，我有一段不太成熟的代码：
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Imports System.Net
Imports System.Net.Sockets
Imports System.Threading
Imports System.IO
Public Class Form1
Dim TCPListenerRun, TCPClientRun As Boolean
Dim ControlTCPClient, ServerClient As TcpClient
Dim ControlTCPListener As TcpListener
Dim TCPClientT, TCPListenerT As Thread
Private ControlStream, SControlStream As NetworkStream
Private ControlReadStream, SControlReadStream As StreamReader
Private ControlWriteStream, SControlWriteStream As StreamWriter
'异步委托
Private Delegate Sub InvokeDelegate(ByVal iMessage As String)
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
If TCPListenerRun Then
TCPListenerT.Abort()
ControlTCPListener.Stop()
TCPListenerRun = False
Button1.Text = "启动服务端 "
TextBox2.AppendText( "服务器已停止！ " vbCrLf)
Else
ControlTCPListener = New TcpListener(IPAddress.Parse( "127.0.0.1 "), 13000)
ControlTCPListener.Start()
TCPListenerT = New Thread(AddressOf Listen)
TCPListenerT.Start()
TextBox2.AppendText( "等待连接... " vbCrLf)
TextBox2.AppendText( "服务器已启动！ " vbCrLf)
TCPListenerRun = True
Button1.Text = "停止服务端 "
End If
Catch ex As Exception
TextBox2.AppendText(ex.Message vbCrLf)
End Try
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Try
If TCPClientRun Then
TCPClientT.Abort()
ControlTCPClient.Close()
TCPClientRun = False
Button2.Text = "启动客户端 "
Else
ControlTCPClient = New TcpClient(New IPEndPoint(IPAddress.Parse( "127.0.0.1 "), 13001))
ControlTCPClient.Connect(New IPEndPoint(IPAddress.Parse( "127.0.0.1 "), 13000))
TCPClientRun = True
Button2.Text = "停止客户端 "
TCPClientT = New Thread(AddressOf Receive)
TCPClientT.Start()
ControlStream = ControlTCPClient.GetStream()
ControlReadStream = New StreamReader(ControlStream)
ControlWriteStream = New StreamWriter(ControlStream)
End If
Catch ex As SocketException
'If ex.ErrorCode = 10048 Then
ControlTCPClient.Close()
'End If
TCPClientRun = False
Button2.Text = "启动客户端 "
TextBox2.AppendText(ex.Message vbCrLf)
End Try
End Sub
Private Sub Listen()
ServerClient = ControlTCPListener.AcceptTcpClient
TextBox2.BeginInvoke(New InvokeDelegate(AddressOf InvokeMethod_Receive), "成功连接... ")
SControlStream = ServerClient.GetStream()
SControlReadStream = New StreamReader(SControlStream)
SControlWriteStream = New StreamWriter(SControlStream)
While True
TextBox2.BeginInvoke(New InvokeDelegate(AddressOf InvokeMethod_Receive), SControlReadStream.ReadLine())
End While
End Sub
Private Sub Receive()
While True
TextBox2.BeginInvoke(New InvokeDelegate(AddressOf InvokeMethod_Receive), ControlReadStream.ReadLine())
'Console.WriteLine(ControlTCPClient.Available)
End While
End Sub
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
TCPListenerRun = False
TCPClientRun = False
End Sub
Private Sub InvokeMethod_Receive(ByVal iMessage As String)
TextBox2.AppendText(iMessage vbCrLf)
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
ControlWriteStream.WriteLine(TextBox1.Text)
ControlWriteStream.Flush()
End Sub
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
SControlWriteStream.WriteLine(TextBox3.Text)
SControlWriteStream.Flush()
End Sub
End Class
VB.NET 如何实现局域网内即时会话
楼主你好,你所指的那个指令就是"winchat",Windows自带的局域网聊天工具.使用方法:开始--运行--输入winchat,就可以打开Winchat了.只能实现很简单的功能,并且是中文,没什么好介绍的,相信你一看就懂,希望可以帮到你!
ps:你所说的电影是杜拉拉升职记吧?貌似那是用的邮件发的,不小心点成群发了~嘿嘿..
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
怎样用VB.NET进行网络编程？
都可以,可以用winsock,也可以自己重写SOCKET套接字.建议你如果工期紧,可以先用WINSOCK.当然最好是自己学用SOCKET套接字.这对未来开发网络通讯是很有帮助的.因为用WINSOCK有个毛病就是杀毒软件总会阻止
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