How To Read Text From TCP Port
Apr 10, 2011
I have a device that is continuously sending text over a TCP port and I want to write a VB.net application that will read and evaluate this data. Being new to programming I am having trouble working out how to establish a connection to this TCP port and read the text using VB code. I am able to view this stream of data using telnet.
Most of the example code I have seen during my research seems to deal with two way communication but I think what I need is just one way (I don't need to send any commands to the device - just read what it is sending). I'm hoping some kind person can provide example code to get me started or point me in the right direction?
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Oct 13, 2009
i cannot read data from my serial port..i am using HYPERTERMINAL on my other computer(computer 2)..i can send data from my computer(computer 1) and it showed on computer 2..but when i type things into my HYPERTERMINAL in computer 2, the Visual Basic program cannot read it??this is my code:
[Code]...
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Jan 16, 2009
I'm trying to copy to the clipboard a text that is read from the serial port, but when try to use:
Clipboard.SetText(MyTexo,MyText Format) give me the follow error: Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it.
Im using VB.Net 2008 and is a single form program. What could be wrong.
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Mar 11, 2010
i am trying to write a simple programme to allow the user to open and read data from a RS232 port on a medical equipment and save the data into text file. Iam not a techie. I am totally new to programming save a few projects in foxpro(lol.....yeah oldshool).
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Nov 27, 2010
I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
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Apr 18, 2010
I;m attempting to write code to read several NMEA ports and format the data for archive. When I execute the following code:
Using Commportno As IO.Ports.SerialPort = _
My.Computer.Ports.OpenSerialPort(portName:=port)
Dim Incoming As String = Commportno.ReadLine()
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Aug 16, 2011
i am a absolute beginner and i want to use vb to receive data from micro controller through serial port using rs232 standards, i found this code to receive the data serially, can any one tell me where should i paste this code, so that the data received will be displayed in message box.Private Sub DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) HandlesSerialPort1.DataReceived
[Code]...
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Oct 15, 2011
In My application I need to retrieve/Read data from USB port. Is it possible to Read data from USB cable?
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Mar 3, 2009
how to read data from usb port in vb.net
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Oct 27, 2009
i am new to VB.net and i am writeing a program to read a serial port and if there is any thing in the buffer i want to read the data and put it in a string then clear the buffer
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Jun 22, 2010
Ive got a big problem.I need to read data from the serial portIve used serialport from the toolbox , but dont know how to use it.I used to do it on a Amiga like this
open serial("serial.device".0.2400.0) rem(open port)
repeat GW.w=readserial(0)
if gw>29 and gw<128
[code].....
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May 27, 2010
how to read data from usb port in vb.net
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Jun 25, 2009
I want to read the ethernet port by using visual basic. It would be great if anyone can guide me for this.
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Nov 17, 2009
When using the SerialPort component in VB.Net, and when the event DataReceived occurs, and if we assume that the com port read 13 digits (Bar Code), how to read the whole data received (i.e. 13 digits) while in event without letting the event repeats 13 times and write the 13 digits AFTER COLLECT THEM in a text box (I don' want to write one-by-one digit in the textbox, all at once)
briefly: I want to read the whole data from COM port at once and write the whole data (not digit-by-digit or byte-by-byte)to a textbox.
I know it is SERIAL port but I want to write the 13 digits PARALLEL to a textbox!
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Jun 2, 2010
I have a device which send me data over a particular port. The data is in XML Format.
Now I already did a small console application which listen for the data and print out the data on the screen.
Now my plans are to deserialize the xml data or I will create the insert statement into the database.
1) The device send me the data every second (if there is data to send me).
2) I cannot say how much data the device is going to send me.
How can I make sure to capture all data without loose any information..
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Feb 13, 2009
How to open/Read/Write in USB Port
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Jan 3, 2010
I am trying to read data from rfid tag using rfid reader. i can connect reader, but cannot get data?
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Apr 2, 2012
I am using a VB.NET(VS2010) to read data from serial port. I have 8-bit data to collect through rs232. This data is represented numbers. What reading method should I use and how to convert it to double format?
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Nov 12, 2009
I need to read data from the serial port Ive used serialport from the toolbox , but dont know how to use it. I used to do it on a Amiga like this
open serial("serial.device".0.2400.0) rem(open port)
repeat GW.w=readserial(0)
if gw>29 and gw<128
[Code]....
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Sep 6, 2010
I am using Scanpal2 to read data and as per its documentation as follows
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Nov 2, 2009
I have a teperature PCB that reports the temp back via serial port. I can open Hyper Terminal and receive all the data I want - so I know the unit is working... but I want to create a VB app so I can use the data received. When I run the program I get this error:
System.TimeoutException: The operation has timed out.
at System.IO.Ports.SerialStream.Read(Byte[] array, Int32 offset, Int32 count, Int32 timeout)
at System.IO.Ports.SerialStream.Read(Byte[] array, Int32 offset, Int32 count)
at System.IO.Ports.SerialPort.InternalRead(Char[] buffer, Int32 offset, Int32 count, Int32 timeout, Boolean countMultiByteCharsAsOne)
[Code]...
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Oct 27, 2010
I working on modbus software. I am able to communicate with the modbus slave. The only problem with me is after i write the message on the serial port , i read the serial port for data after say 100ms and i use "system.threading.thread.sleep(100)". This freezes my program for a while. Can you please help me build the logic for reading the serial port after say n no. of seconds without using "system.threading.thread.sleep". I am new to vb.net. I am using .net 3.5sp1 and vs2008.
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May 13, 2011
My current program can read in a continuous stream of data when initialized and I can send a command to retrieve the devices stored data, I also have within the same program code that will read an XML file and populate from controls.
I have two separate idea's right now that I'm trying to merge into one
I want to read in XML and populate my controls. I'm aware of delegate and Invoke but I'm having a hard time working them into my XML portion or the opposite "working my XML into my serial port class".
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May 2, 2011
I have been using VB 6.0 and new to VB.net (VB 2005) I want to know how to read characters from RS-232 port.
I have created serialport object and want to read this sort of thing "A,2451.3955,06715.8253"
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Dec 10, 2011
Actually I have a Weigh Bridge (A Large Scale weight mechanism which weighs in Tons) , for which we use an ELECTRONIC WEIGHT INDICATOR which display the weight on its own digital screen while it has an option to connect with a pc via Serial Port,,I just want is to have its weight (Digits) in a text box of my VB.Net Program,Here I want to mention that I know technical settings of my weight machine such as
Bite Per Second
Data Bits
Parity
Stop Bits
Etc,,,
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Jul 20, 2011
This code was published a few years ago by stanav. I have it reading my Com1 db9 port but having some issues.i have tried adjusting some timeouts, but then, it may just sit there.Jarbled Text - I should be getting results like "SOHEM709US 17946US 1114 US62RST 123456789 201107141703 01 " etc., instead I am getting "3B?B?B?????99?F?F?3B?B?B?CAD?1? ? ?2?8?3?0? ?0?1?6"I/O Error - The I/O Operation has been aborted because of either a thread exit or an application request.
[Code]...
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Mar 11, 2010
I have written a sketch to an arduino board to send data to the serial port. How can I tell VB to only read from the serial port when data is sent to it? I have been using the timer.tick and tried to sink it with the delay I set in the arduino
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Jun 25, 2010
I am trying to read data from serial com1 port. Now, I am not sure how to send. I found so many method to send but that are not so good and I cann't read any data. I am using VB.net 2005. Which is the best way and how can I read and send?
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Aug 23, 2010
I need to write and read data from a RS232 port. On the RS232 port there is a RFID Card reader-Writer connected. So I need to send hex codes to the device, and have to poll every 1sec if there is a card in the system. If there is a card I need to read the info that is on the card. My biggest problem is I think is that I am not sure how many characters there will be in return after the read command (maybe it is always the same length this I am not sure). What is the right way to read-write to the com port. So I always got the same result and not skipping a code.
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Feb 22, 2007
I have an older VB6 application which uses a scanner on the COMM port and does the following... (I have been tasked with re-writing it in ASP.NET (VB)...
OLD APPLICATION...
1. reads a Scanner and loads the data onto the PC
2. FTP's the data file to a SQL Server (where a small app picks it up and processes it)
3. Deletes the data from the scanner[code]...
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