Detect The Address And Port Number Of The Parallel Port In Computer?Jun 9, 2010
I would like to detect the Address and Port number of the Parallel Port in computer.
I would like to detect the Address and Port number of the Parallel Port in computer.
I have 2 winforms, one acts as server (ie Winform:Server role) and another one as client (ie Winform: Client role). In my LAN setup, there are 6 PCs and these PCs connected to each other via a 8-port switch and each PC has more than 1 LAN card.
There is one PC running [Winform: Server role] and 5 others running the [Winform: client role]. In [Winform: Server role], I'm using following code to obtain local ip address and port number and the [Winform: Server role] will listen to all incoming TCP requests according to these auto assigned ip address and port number.
Dim Listener As System.Net.Sockets.TcpListener
Dim Client As New System.Net.Sockets.TcpClient
Dim Message As String = ""
I need to clarify my intention. My current approach to my intention maybe incorrect. I attempt to create a 'zero configuration client-server networking' and that is plug & play. The server will know where the client and vise versa. I know there is a program (i.e. MaxiVista) has done that exactly.
MaxiVista has 2 applications, i.e. server and client. Users only need to execute the server application in PC designated as server role and execute the client application in another PC designated as client role. Then the server will be able to find all executing clients in the same LAN.
My intention is just that. Plug and play 'zero configuration client-server networking' within the same LAN.
I wish to send a string held in a var to an IP address and Port number both also held in vars. I also wish to listen to a signals coming in on a particular port number so when particular strings are received I can trigger other transmissions.View 2 Replies View Related
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I have a program that connect to 2 printers at the same time. Ribbon Printer and Label printer.
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However i have a Parallel printer at Port LPT1 which i wish to use it to print label. I have search online but find no solution on how to open connection to LPT1 and print the document in coding.What i can find i only send a window command to the port LPT
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i used following method.
option explicit on
Dim myTime as object
public sub Form1
if i set the value of mytime less then 2000 my motor does'nt work at all. i tried also with the timer tool and i wrote the code in the tick event of timer but it is also very slow.
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Public Declare Function Inp Lib "inpout32.dll" Alias "Inp32" _
(ByVal PortAddress As Integer) _
how to declare the library functions and what to declare the variables as (&H378 is obviously not an integer)
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here is my code
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Dim host As String = "www.google.com"
Dim port As Integer = 80
Dim addr As IPAddress = CType(Dns.GetHostAddresses(host)(0), IPAddress)
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ok i got a hard question I have diferent computers, lets say 200 cps with all known mac address. i got 3 switches with 24 ports each. i want to know if i can be able to know the port No. and switch of a given computer given the mac address... some computer arent in the domain. how could i start puttin this into codeView 1 Replies View Related
If I uninstall the COM1 and reboot, it works. If I shut down (power off) and restart, I get the message below. If I uninstall then click on Scan for Hardware Changes,The given port name does not start with COM/com or does not resolve to a valid serial port. Parameter name:portNameView 8 Replies View Related
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Is it possible that I could include it to could into my program so that i don't need to open the ports of each computer? Below is my code.
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I am working on writing a program that needs to send a command to a specific port on the same computer, I have that working fine. There is another piece of software running that is listening to that port for some commands (read on).
Dim myTcpClient As New TcpClient
Dim networkStream As NetworkStream = myTcpClient.GetStream()
However when I try to send a command I get no response...
Dim outStream As Byte() = System.Text.Encoding.ASCII.GetBytes("0x33")
networkStream.Write(outStream, 0, outStream.Length)
I have been given a list of protocols that I need to send to that port. What I have been told is that the size (in byes) is 1 and the value is "0x33" with no parameters. I am completely new to sockets and sending data through tcp.
ok i got a hard question I have diferent computers, lets say 200 cps with all known mac address.
i got 3 switches with 24 ports each. i want to know if i can be able to know the port No. and switch of a given computer given the mac address.some computer arent in the domain.
how could i start puttin this into code
I have a problem interfacing with the Parallel Port. I have tried using the "inpout32.dll" to communicate with the port, but it didn't work for me. I have used another program (coded in C++), and I have successfully read the S-port-data - and that's what I mainly need the application for.
Do you guys have an "easy" way to interface with the Parallel Port using VB .Net?I don't want to use C++.
I am trying to get my 4 port USB relay board to work in VB.net using the COM PORT. I found some code from a poster who has the 16 port USB relay version. When trying his code i can only get it to turn on relays 1-3 all at the same time. The product can be found here: USB 4 port relay
"01+//" - Relay 1 is switched ON
"01-//" - Relay 1 is switched OFF
"02+//" - Relay 2 is switched ON
"02-//" - Relay 2 is switched OFF
So i am confused as to how to separate each relay out with that code above and just be able to turn on any number 1-4 relay on or off independently from each other!
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