用vb.net编写网口 vbnet web编程
如何用vb.net进行网站开发
打开VS , 选择VisualBasic -- Web -- ASP.NET Web 应用程序
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如下图:
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
请教用VB.NET向网口发送16进制的数的方法.
很有意思。
原文数据全为:“00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ; ”
加密后变成了:“09 51 55 F4 FB 10 6F A4 D3 E8 87 46 F8 2F 49 CD ; ”
得出这样的结果是有很多方法都可以实现的:
比如每个原数上加上个常数就可以了。
00+09=09;得出第一组加密后的数值
00+51=51;得出第二组加密后的数值
...
00+CD=CD;得出第16组加密后的数值.
加密的方法还有很多,不过这种最简单。
还有就是你给的原文太单一了,不能够更好的分析数据的规律。
如果你能把原文改为如下这段代码再去加密一下,再把加密结果贴上来看一下就好多了。
00000140h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ;
00000150h: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ;
00000160h: 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 ; 00000170h: 00 10 20 30 40 50 60 70 80 90 A0 B0 C0 D0 E0 F0 ;
00000180h: 11 11 11 11 11 22 22 22 22 22 22 EE EE EE FF FF ;
以上是单片机高手团为您解答。
如果还没解决你的问题,可以加我百度HI账号。
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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