Read Data From A Text File With SERIALPORT While Using "StringReader.ReadLine"?
Jun 30, 2011read data from a text file with SERIALPORT while using "StringReader.ReadLine"?
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Text File Read (Readline)
Mar 11, 2010When I read a text file as the code below the first line returns as nothing. I checked the text file and it contains 3 lines before the read. After the read the first line is blank the following 2 lines have values.
[Code]...
Read Text File With Multiple Fields - Unhandled Exception - MNum = ObjReader.ReadLine
Nov 29, 2009I have a text file in this format
Date TimeTickerSectorOpenHighLowCloseVolumeAsk AskVolBid Bid VolMidSpread Fact1
200802069:30:00AAPL45130.88130.88130.88130.88294028130.93850130.92700130.9250.500000
200802069:30:05AAPL45130.92130.95130.82130.9417294130.95700130.94100130.945-0.200000
[CODE]...
Basically I would like to read in this file line by line and separate every every field into a custom variable and then do some processing. So, I would read in the first record and put the data into these fields
date
time
ticker
sector
open
high
ETC
I started coding this using a TEST file that only had two fields name and a number
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Dim FILE_NAME As String = "C:aaple2.txt"
[CODE]...
I got an unhandled exception on this line: mNum = objReader.ReadLine
Aborting A SerialPort Readline Method?
Nov 20, 2009I have a program that is hooked to an external device via rs232. I can send and receive messages to this device just fine using the ReadLine() method of the serial port. This allows me to send a command and wait for a response in a synchronous manner. However, when I start the program I need to check the status of the device. If the device is in a sleep state, off, or on, I send a command and get a response, however, if the machine is unplugged, I get nothing so my program will hang waiting for a response before continuing. I would like to abort the readline after 1 minute and display a message that the external device is not connected or having a problem, etc. and allow the program to load. The command I use to check the device is:
Do Until Mid(balanceStatus, 1,3) = "S S" 'This is the return command that the status is read
spBlance.Writeline ("S")
balanceStatus = spBalance.Readline 'This will cause the program to hang if the external device is unavailable[code]....
That readline is causing the program to hang. So I need a way to abort if it exceeds a certain time (around 1 minute). I was trying to use the DataReceived Event of the serial port, but I need to wait for a response before continuing and DataReceived fires on its own thread.If there is a way to abort the thread, I was thinking of doing a timer control.
Write Some Blocking Code Much Like The "Serialport.ReadLine"?
Oct 10, 2009I am running a socket client and need to write some blocking code much like the "Serialport.ReadLine" code which blocks for X amount of time before either throwing a time out exception or returning the string revived. I need to do the same thing with the client socket, basically bloxcking until a CRLF has been detected or a time out has occurred. What is the best way of doing this?
View 2 RepliesCreate A Text File, Then Readline And Writeline It?
Sep 13, 2008When the form load I needed to create a text file into "C:\Program Files\User\User.text" But if the file exist it will read line1, line 2 and line3 of the text in different textboxes Then if I click save, it will write textbox 1 to line 1, textbox2 to line 2 and textbox3 to line 3.How do I do it?
View 14 RepliesVS 2005 : Create A Source To Get The Strings From The Text File Using ReadLine Method?
Aug 22, 2010I need a bit of advice. I am working on my project with the listbox. I know how to create a source to get the strings from the text file using ReadLine method, but I have no idea how to split the strings in the text file by on the third commas and ignore the other strings while select with the matched strings on the listbox for each row.Here it is an example listbox Here it is an example items on the listbox
random item 1
random item 2
random item 3
random item 4
random item 5
And here it is an example text file.
example strings one, any strings 1, any random strings 1, other strings 1, final end of strings 1
example strings two, any strings 2, any random strings 2, other strings 2, final end of strings 2
example strings three, any strings 3, any random strings 3, other strings 3, final end of strings 3
example strings four, any strings 4, any random strings 4, other strings 4, final end of strings 4
example strings five, any strings 5, any random strings 5, other strings 5, final end of strings 5
The listbox is display the list of an example items, so if I select the "random item 1" item on the listbox, it read the strings through in the text file on the first line to get the strings on the third commas in the same line which it is (any random strings 1) to split it while ignore the other strings (other strings 1, final end of strings 1) that come fourth and fifth commas. So, if I select the "random item 2" item on the listbox, it read the the strings through in the text file on the second line to get the strings on the third commas in the same line which it is (any random strings 2) to split it while ignore the other strings (other strings 2, final end of strings 2) that come fourth and fifth commas and so on...That is what I am trying to achieve by select the each listbox item to get the correct strings for each line in the text file that come on the third commas while to ignore the other strings.
Read Data From A Text File
Jun 10, 2011I am currently trying to develop an algorithm for the following problem: Read data from a text file such as: the driver returns on his glorious day. He's very happy to be safe and.sound at home, with his wife. With that data, i need to print the length of each word in the file and the total number of words in the file. But symbols such as . or , or ' cannot be included in the word length.
[Code]...
C# - StreamReader.ReadLine And CR - Server Will Not Return From ReadLine Until A Disconnect
Jul 8, 2009Am I being dense here? StreamReader.ReadLine states that: A line is defined as a sequence of characters followed by a line feed (" "), a carriage return (" ") or a carriage return immediately followed by a line feed (" ")
[Code]...
Only Read Numeric Data From Text File
Dec 4, 2010I only want to place the numerical data in an array. At the moment I have the following code to do this. [Code]. This code places the numbers in the data array when there is not any text in the file, i.e. when there are no headers. I would like to place the headers in another array, and then have the numbers in the array as in the code above.
View 5 RepliesRead Data From A Text File's Line
Jan 15, 2012How can i do the next thing? I want to know what's the data in a textfile's line. If i'v got the line number. For example: variable line_number = 5 In the c: est.txt on the 5th line the data is "Washington" So the answer is Washington
View 1 RepliesRead Text File And Sum A Column Of Data?
Sep 21, 2010I am new to the forum and would like some guidance on how I can achieve the following. I would like to read data from a text file after which I want to do a simple calculation that totals one of the columns.
I have already been able to read the text file into a text box but firstly I'm not quite sure if this method of using the text box is appropriate and secondly how do I sum a column of data?
Splitting Data Read From A Text File?
Jan 10, 2012I am exporting a directory list from a FTP directory to a text file, I would like any suggestions how best to read and split the information detailed on each row in the text file as information isn't Tab Delimited (which i have code for if it was) and the number of spaces between each attribute is different. Below is a snippet of the text file, the main two I require is the File Size and the Filename.
-rw-rw-r-- 1 user_mb www 80520 Jan 10 12:16 GIFT20-000.jpg
-rw-rw-r-- 1 system www 81119 Jan 10 12:16 GIFT25-000.jpg
-rw-rw-r-- 1 system www 80852 Jan 10 12:16 GIFT50-000.jpg
Read A Text File And Pass The Data As A Variable?
Mar 18, 2011I have a text file which contains some data as follows
1, 0,0,0,0,0,0,-288.000,-288.000,-16.200,0,0
2, 0,0,0,0,0,0,-432.000,-288.000,-16.200,0,0
3, 0,0,0,0,0,0,-360.000,-360.000,-16.200,0,0
4, 0,0,0,0,0,0,-288.000,-432.000,-16.200,0,0
There r 7 numbers in each row and need to read each of that and store it as an integer value ...I tried the following code..
Imports System
Imports System.IO
Imports System.Collections[code].....
This works and is showing each number by number ...But is there a way to store each number to another variable...something like a(1)=1, b(1)=0...., a(2)=2, b(2)=0......
Read Text File And Sort Data Between Two Characters?
Jun 12, 2011I have a text document that contains a bunch of data sets. However before each data set there is a number surrounded by brackets. I need to go instance by instance of brackets and pull the number between the brackets and the lines after the brackets until the next bracket. Here is an example of the text file that contains the data. I know how to read from a text document, do substring, do contain function, etc... I just am extremely stumped on how to do this. Here is an example of a couple entries of the text document...
[4188]
LongName=
ShortName=
LauncherDirKey=
[Code]....
Notice how different sections have a different amount of lines therefore a reading a fixed number of lines is not an option.
Use TextFieldParser To Read A Fixed Width Text Data File?
Aug 25, 2010I am learning to use TextFieldParser to read a fixed width text data file. It works great. I copied code below. Question: How to stop at the end of each line because I need to add some code?
Using tf As New TextFieldParser(fileName)
tf.TextFieldType = FileIO.FieldType.FixedWidth
tf.SetFieldWidths(60, 30, 20) //three columns
[Code].....
VS 2008 - Reading Data - Read In Demographics From A Text File
Dec 8, 2009I am trying to read in demographics from a text file. What I am trying to do is use the commas in the text file as a stop and starting point for each field. Instead of explaining all will be clear once you look at the code.
Dim filecontents As String
Dim newlineindex As Integer
Dim numindex As Integer
Dim credents As String
[CODE]...
Read Serial Port Data Into A Text File In VB2008 Express?
Mar 11, 2010i 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).
View 4 RepliesStreamreader - Text File - To Read Into A Listview - Read From A Specific Line In That File
Mar 11, 2010I have a txt file that I need to read into a listview, but I need to read from a specific line in that file. Below is a sample of the txt file to read,
6400,3200,2,95.5,84,76.6,0
1,2,-20,15,0,0,0,"NO",0,0
TOTAL GPM= 6400 HWT= 95.5 CWT= 84.0 IWBT= 76.6 ALTITUDE= 0
CODE]...
VS 2008 - Read Text File - When Click Button Add Text From Combobox Is Added To Text File
Jan 4, 2010I have one combobox, two buttons (Add and View) and listbox. When I click button Add text from combobox is added to text file. This is code for Add button:
[Code]...
SerialPort - Read / Write Files And Stuff
Oct 3, 2011I have one project that I need help writing that I have spent months trying to write with no luck. Anyway so here is my question. I want to write a program that can display a phones filesystems that is connected to my computer by a serial port. I would like to be able to Read/Write files and stuff if possible. I have tried many ways of doing this so this is my last resort.
View 5 RepliesLabel.text Won't Show The Readline?
Mar 21, 2012I have to work with network program with vb 2010. I'm trying to show the ReadLine stream in label text but it won't show.
Dim tcpCli As TcpClient = tcpList.AcceptTcpClient() 'claiming tcp listener to accept the tcp client
Dim ns As NetworkStream = tcpCli.GetStream ' assign ns as network stream and assign as client to get nw stream
[Code]....
Read A 12 Byte Hex String (RFID Tag ID) Using SerialPort Control?
Apr 23, 2012I'm trying to make an application that can read a 12 byte hex string from the serial port and display it into a text box, the source is a RFID module that is connected to my USB port using a RS232-USB converter.My first problem was accessing the text box in the datarecieved event due to invalid cross-threaded operation. Upon googling that, I copy/pasted the code I needed to get it work, these are all the cross threading functions.The OpenPort function and Datarecieved event are my own code, the rest I got off google. The application then worked, but I would get an incomplete code, the first swipe I would get all 12 digits, and at every other swipe, the first byte would vanish. Upon some more reading, I decided to make an array, the size of the incoming data (shown in the code below), but now I get the cross-threading error again.I know there's something wrong with the way I'm using the array. This is way beyond my VB knowledge, and I'm in o I'm an electronics engineer and self taught myself a little programming to create some apps for my hardware.Updated code:
Public Class Form3
Dim msg As String
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
[code]....
Updating Label.text With StandardError.readline In A New Thread?
Jan 14, 2011Private Sub runExe()
Dim myProcess As New Process()
Dim myProcessStartInfo As New ProcessStartInfo("mkclean", " --optimize """ & txtSrcFile.Text & """ """ & txtSaveFile.Text & """")
[Code]....
Downloading Page Data Using The Stream Reader Using Readline?
Feb 1, 2009I am downloading page data using the stream reader using readline.I want to concatenate each line into one long string for parsing The below line of code is not working: datajoined =dataline.Insert(datajoined.Length - 1, dataline.Length - 1)My inevitable goal here is to track stream data with a progress bar. But first I must learn to dload page data in chunks.
[Code]...
Using The "readline" Function To Read A Specific Line?
Oct 30, 2009i am trying to write code to assign values from a line of a text file to variables in my program. the problem is that I don't need all the values written in the text file assigned to variables. So. Basically I want to know if there is a way to use "ReadLine" to access specific lines in a text file.
View 1 RepliesReading An Unknown Character From Text Document (TextFieldParser/.readline)?
Oct 18, 2011The end of the text document my application is reading is denoted by a character that I cant identify, copy or paste. I attached an image of it so you can see. I have no control over the formatting of the document so I can't change the character. During debugging it shows the same character as shown in the picture, but if I hit the little tack next to where the variable shows then it changes to "f". However, if I try to see if the variable equals "f" it returns false.
View 3 RepliesRead Text File And Stop Then How To Continue At The Last Read Point
Dec 15, 2009I'm using vb.net 1.1 to develop the program. I got text files that contain test result from a machine, like below.
T1 1.24535 2.56335 2.43253 1.24538 2.55619 4.35243
T2 1.42542 1.63728 3.57295 4.59275 1.57320 2.72057
T3 5.12857 2.45375 6.38593 2.58375 3.57259 3.57204
I need to check the test result with the data from database, to find out which test result is failed. If there is a fail test result, I will show an alert to the operator and stop the checking process. Until the operator close the alert, then the checking process will continue from the last read point.
Reading Lines In File Using Readline?
Feb 16, 2011I use this code to read in a text file:
Quote:
Dim fileName As String = fileloc
Using reader As New System.IO.StreamReader(fileName)
While Not reader.ReadLine() Is Nothing
[code]....
THe problem is it reads in every other line.I assume its because its reading line one in the 'while' then the next line being stored during the loop....
VS 2010 Text File Read From Read Until?
Oct 3, 2009I'm trying to make a program that can read .mp3 data (Such as Artist, Album, Year, Track number, etc), but I need to be able to do two things that I have no clue how to do:
1. Read starting from a specified string (E.G, On one line it states: [code]
2. Read until a specified string (E.G, On the previously stated line,I need to read starting from what I said, up until.