VS 2008 SerialPort Custom NewLine Character?
May 21, 2010
I have this sample code...
Private Sub DataReceived( _
ByVal sender As Object, _
ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) _
[code]....
this displays in a text box the received data from a serial port. And it works like a charm but the data received has custom start and end of line characters. A line begins with chr(&H2) and ends with chr(&H3). What i want is on the text box those characters to be hidden and the chr(&H3) to start a new line.
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Dec 22, 2009
The string is coming from this [url]...
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Aug 19, 2009
I am using a Rich TextBox in VB.NET and passing to a StringBuilder. I need to replace the New Line character from the TextBox with either a space or a comma. Problem is the standard codes for new line don't seem to be picking up this New Line character in this case. Is there a specific character used in Rich TextBoxes as the New Line?
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Sep 21, 2010
i am wrting a modbus RTU code for communicating with devices I intend to end modbus query with wight bytes to be sent 1 , 3 , 0, 3,0,5, &h79, &hc5 the third and fifith bytes which are zero are not actually writen into the commport How to do this ?
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Jan 13, 2010
I am reading the following text from a multiline textbox
james:johnson
anita:baker
vince:daly
chuck:better
I want to remove the newline characters on line 2, 3, 4 etc.
Dim AccountsText As String
Dim arr_Accounts As String()
AccountsText = txt_Accounts.Text
[Code].....
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Dec 12, 2010
[Code]...
For each character of this string I want a new character out of the string and then remove the character from the list of characters that still maybe used for other characters. It may not get the same character, you could basically just call this encryption, but it's not what I am making. I don't want to waste my time doing this one hour while VB can do this for me in <1 second.
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Feb 20, 2012
I was wondering how to implement a custom character set for use by an application, i.e. hex bytes that are read by the program then converted and displayed in the window. If this requires first converting the bytes in a file to an already implemented character set, I'm cool with it - I'll go with whatever works or works best. I'm writing with VB.NET 2010, and running Windows 7 Home Premium x64, by the way.
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Jan 13, 2010
i don't if i can make an output that is too long for the MessageBox to [roll] across the screen rather than have [newline] in vb.net
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Jun 23, 2010
I have wrote this program (for PDA), to connect a PDA to the PC via RS232.It only works half way.
If I send anything from the pda to the pc, I receive data correctly.If I send anything from the pc, then the pda hangs up.Can anybody tell me what I'm doing wrong?
Also, how do I make sure the port on PDA is closed when quitting the application?
[Code]...
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Mar 14, 2009
I am trying to access a printer via the serial port in VB Express 2008. I wrote a small prog with buttons on the form to exercise the escape codes in a Windows Vista 32 laptop with a USB to serial adapter. Only 3 codes worked, BEL, reset and a printer specific command. Also, when i try to receive data, it justs times out. So, I tried to move to a WinXP machine with real serial ports. The program now has an illegal argument exception and the message is to the effect that the name of the port for the property portName does not start with COM/com. Which is very puzzling because I did verify the portname and it is com1.Is this a known issue or am I doing something wrong? The form works on Vista but not in XP.
[Code]...
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Jun 23, 2010
I am trying to send and receive data using the SerialPort component. I am sending data to an Texas Instruments MSP430 which simply echos the sent character. I wanted my VB solution to read characters from a file, send a single character, and wait until the echoed character is received before sending another.
I have been fairly successful thus far but I have run into a little catch. When I attempt to send large files (323505+ characters) my MSP430 just hangs there and will not receive any more characters. My VB app return to VS '08 with timeout errors (timeout set to 1 minute).
I wanted to post my VB code here to see if the problem is from my VB app. I will be posting this problem on the IT usergroup to sort out anything on the MCU end. Here is the pastbin of the data write and the data receive subs:[URl]..
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Aug 25, 2009
I'm using one form to make contact with the serial port with the next
Imports System.IO.Ports
Imports Microsoft
Public Class Menu
[Code].....
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Jul 7, 2009
My program has been running fine for months and still is, but I now have this warning, (which must have shown up since upgrading to VB2008 from 2005 a month ago).
It regards the serial port encoding setup and reads as follows -- serialport1.Encoding = encoding.GetEncoding(1252) 'for char > 127
Warning 1Access of shared member, constant member, enum member or nested type through an instance; qualifying expression will not be evaluated. Perhaps there was an update on this with 2008 and it's now redundant or something?
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Apr 6, 2009
I want to use IO.ports.serialport to receive ASCII data from an instrument (A Luxmeter for those interested). So far, i've been unable to read any single byte from the instrument using the IO.ports.serialport.A terminal window shows the datastream just fine, and I've used MScommlib to read the data without problems. I just had other problems with the latter, so I thought I'd give this IO.ports.serialport a try.The code runs fine, no errors. It just doesn't receive anything.Bytestoread stays 0 forever.I distilled the code to it's bare essence. What am I missing? Is it something obvious, or did I completely misunderstand the whole concept? (Which is not unlikely..)I did check the obvious, of course: settings, baudrate, cable is connected, instrument is sending, etc.[code]
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Jan 22, 2009
I was attempting to clean up my serial port example that is in the code bank. I had decided to use a modem, thinking that a lot of computers still had them. By using the loopback feature of the modem I am able to simulate / emulate various features of the serial port.All was going well, and then I got a Blue Screen with this error after running for 10 minutes or so:DRIVER_IRQL_NOT_LESS_OR_EQUALSTOP 0x000000d1 etc.I then went back to using my GPS receiver, which sends messages constantly to a serial port. This test ran for several hours(4). It received messages correctly during the entire test.I then created a new, not as complex, version and it also receives the Blue Screen. I have made sure that the modem drivers are up to date, searched for the error, etc. My gut is telling me that it is the modem driver. I have attached the project. This is the scaled back version, but it uses the same functionality.
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May 31, 2009
I need to create some serial port controlls manually. My program reads through a config file, and it if comes across an entry called COMPORT then I need to create a contol to talk to this port. The entries in the ini file might be
COMPORT=COM1
COMPORT=COM3
COMPORT=COM7
So here is my problem! I'd like to create the variable control name with part of the com port number, so I can always refer back to it.
EG.
Dim strVar as sring = "COM1"
Dim CName+strVar As New System.IO.Ports.SerialPort
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Feb 19, 2011
There is a problem in my project. It has a class with several properties. When I set the property, it send command to device through serialport. But the problem is when I get the property, it need to send request command to device, and device return value back. How can I update the property?
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Jul 9, 2010
I have a program that reads data from a scanner via the serial port.This program works fine on Windows XP.We have a terminal server set up running Windows Server 2008.I run HyperTerminal on our test terminal, it connects and reads the scanner data fine through COM1.I run my app on that same test terminal and get nothing when I scan.My app connects to COM1 without errors and disconnects without errors.BUT, the DataRecieved event is NEVER getting fired.Neither is the ErrorReceived event.I have played with the Handshaking, with the RecievedBytesThreshhold and pretty much every setup setting I found.Set it up exactly like the settings on Hyperterminal.I have even tried starting a timer on a different thread to call ReadByte every second to try to KICK this thing into doing SOMETHING.Nothing has worked.
I have been trying to fix this for an entire day now.Added events to my class trying to see EVERYTHING that is going on. All I know is, it connects to the port and it disconnects from the port correctly but nothing happens in between.No data when I scan.No event fired at all between connecting to and disconnecting from the port.I have also downloaded other's simple serial communications applications.Nothing in .NET works.[code]
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Sep 15, 2011
I'm using a richtextbox in vb.net. I need to maintain the text formatting while inserting a new entry.I have this issue solved although I am having difficulty with getting a new line between my new text and the prior existing text.Most solutions online presume you're working with rich textbox. text which accepts controlchars.lf, vbcrlf, and chr(10)... even chr(13) adds one single newline.How do i get the newline in rtf formatting?I prefer to have the new text entered at the top of the richtextbox as a user should see the latest update first.In addition, if this can be done more elegantly, I'm open for suggestions.Where you see controlchars.lf is where I want an rtf-based new line to show up. [code]
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Aug 4, 2009
Here is my problem. If Me.BackColor = Color.Red Then MessageBox.Show("Hello " & name & "You have chosen the Red Scheme", "Greeting") End If
I would like to have a newline at the "You have chosen the Red Scheme" i tried to put after the 'name', but it did not work.
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Jan 19, 2012
I use Environment.NewLine, my colleagues use vbCrLf.When I'm doing a code review for them I want something that I can point to to say "use Environment.NewLine instead of vbCrLf"
Or, am I just peeing in the wind, and it doesn't really matter ?
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Jul 9, 2009
Is it possible to make a new line in the WelcomeText of a Setup Project? If so, how?
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Aug 3, 2010
Environnent.NewLine seems to be resolving to two spaces " " (as are vbCrLf and ControlChars.CrLF). Using StringBuilder, AppendLine is doing the same.I've been racking my brain and searching the Internet trying to figure out why this the way it is, but am coming up empty.
I am trying to generate .bat file based on user interface decisions. I need to have separation between lines. I'm trying:
[Code]...
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May 8, 2012
[code]Basically what this does is a users email is passed to the 3rd party site and a token is generated and returned. Then in turn both are passed together with this redirect to log the user in. I have a few others similar to this and they work fine but somehow I keep getting the Newline error in IIS. The only thing that's different from my other authenticators is that this end point URL is .ashx. My others are .asmx or REST.I've tried the HttpUtility.UrlEncode(URL) option but still doesn't work...
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Jan 8, 2009
I read in a string from a file and print out and get[code]...
how do i remove the newline from the string?
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Mar 24, 2012
I am having problems with writing a newline in a listbox.
dim decInput1 as decimal = 40.65
dim decInput2 as decimal = 500.90
dim decInput3 as decimal = 450.89
dim strOutput as string
[code]....
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May 23, 2010
Well I have been able to figure this out but what I want to do is make my string have a new line after 20 chars. I know how to find how many chars the string has but not how to insert environment.newline at 20 chars.I am using this to find the string length
If string.Length > 20 then
'Need to be able to insert environment.newline at 20 chars
Else
'Normal string
End If
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Aug 19, 2009
I am trying to add a line of text to a TextBox component in VB.net, but I cannot figure out for the life of me how to force a new line. Right now it just adds onto what I have already, and that is not good.I have tried copying the actual linebreaks, didn't work. I tried AppendText(), didn't work.
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Jan 17, 2009
I cant split a line by a newline in silverlight vb.net I am reading in numbers from a file into a string as this is the quickest way. Then I parse the data in numbers by splitting the string by newline then by comma. I cant split by newline which again is the sticking point as nothing happens with the newline split.
Dim myone(), myint2(60) As String
Dim myint(6) As Integer
Dim contents As String
[Code].....
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Dec 2, 2009
I am trying to write a function for determining the data type of columns in a delimited file.However my function is not detecting a newline and exiting the loop after the end of the first line.* 'del_2' is equal to a new line character, i have tested this using a small bit of code
if del_2 = ControlChars.NewLine then
MessageBox.Show("It is a newline")
end if
and got the message, and i know the newline characters are at the end of each line in 'filecontents' as i am adding them manually.
Public Shared Function DetermineColumns(ByVal filepath As String, ByVal delimiters As KeyValuePair(Of String, String)) As List(Of KeyValuePair(Of String, Type))
Dim result As New List(Of KeyValuePair(Of String, Type))
[code]....
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