Reading Text From File With Delimiters?
Dec 21, 2010
I've been using VisualBasic 2008 Express Edition for a little while now, and I've gotten the hang of a few things like nesting and basics like that. I love learning everything I can about it, and so I'm working on a program that's got some things I'm not so familiar with involved. I'm not sure exactly what it is I'm looking for help with; as I'm sure some of you may know, there are many different ways to accomplish the same task--it's just that we don't always know the simplest solution, unfortunately. So anyhow, I'd like this program to do a couple of things... Firstly, to read in data from a text source and display it accordingly, and also to use that data in a list box and compile a new list from the original one.I've got a rather vague idea on how to do the first objective to put it nicely.I've read a little about delimiters and such, but the problem is that everywhere I look for tutorials or examples, I'm not really seeing exactly what it is I'm trying to do.Here's an example of the text I'm trying to parse/read/whatever it is:|Name of thing|some data|blah|blah blah|
In this example, I use the vertical bar character (I don't know what it's called; it's Shift + for me) to separate data in a pre-defined order. Let's say I wanted to use this for car information, I guess.[code]Like that, only many more times. What I can't figure out though, is A.) how to make VB read every line within the text file and B.) how to differentiate each of those sets of data so that I can read them into labels on the form. At this point, all I do know is that that vertical bar (this thing) is what's called the delimiter. Other than that, I'm left to pulling my hair out.
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Jul 9, 2011
I am trying to add a text file with SemiColon Delimiters to DatagridView, i did few codings but getting a error as "
"At least one of the DataGridView control's columns has no cell template"
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
OpenFileDialog1.ShowDialog()
[Code]....
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Nov 14, 2010
I just can't think of an easy way to do this. It seems easy, but I'm not just sure how to do this. I want the software to grab a random word inside the bracket "{}". The "|" is the delimiter. Here are some examples...
Input #1: {Hey|Hay|Hello} How {are|r} {you|u} doing?
Output Example #1: Hey How r you doing?
If I execute the code again, this would output...
[code]....
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Nov 20, 2009
I am having some trouble including tab and space delimiters in my multiple delimiter code (see code below). It seems I can not just add the <vbtab> and <vbCrLf> codes into my delimiters list so I tried to replace them beforehand with a Clean String Function (also see code below) but it didn't seem to work. Ultimately, I would like to add any delimited text file to my datagridview.
The code below is working fine except for tabs and spaces (including next-to-each-other separators) I am using Visual Basics Express 2008.[code...]
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May 14, 2012
I'm currently busy coding a hangman game in VB.NET.As a wordlist, I have a textfile containing 1520 words, each one seperated by a new line. The best I could think of to get a random word is with a Randomize() function. Then getting the word from the line # which was randomly generated.
[Code]...
Is there any better way for me to extract the word from that random line? If not, what would be the delimiter I should use for this and how do I quickly change the breaklines into that new delimiter without resorting to Office?
Also, how can I use the textfieldparser to get the file from resources? When I tried using my.resources.filename instead of "filepath", it gave me an ArgumentException due to "invalid characters in the path".
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May 30, 2012
I have a csv file which I am populating to a datagridview. I am delimiting it using "," and "space". My csv file has "," at first instance and "space" in next two instances. I want to delimit the first instance using "," and the second instance using "space" and the third instance though has "space" I wanna ignore that space.
My CSV file :
HTML
jarnvagstag,Mantel,Mantel1,Mantel2
100tag,01/01/1750 11:45:32 PM
200tag,01/02/1750 12:57:57 AM
[Code].....
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Jan 2, 2010
I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
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Feb 16, 2010
I've been writing a weight program for flooded pressure vessels and I'm having trouble retrieving the data from the text files I've been saving. I know how to write the data to the text file, but retrieving it with OpenFileDialog is not so easy for me.The user has individual text boxes that they input strings or numbers into and when they save the file, each text box input is written to one line in the text file. For example, the first text box is for the username, therefore the first line of text that is saved is the person's name, the second text box is the customer, thus the second line in the text file is the customer name, and so on.
(Actually, the first line of text in the saved file designates whether English units were used or Metric units because when the user retrieves the saved file, English units will open one form and Metric units will open a separate form, so some If...Then statement will need to occur).I need to be able to read the first line, have either my "EnglishForm"form open or my "MetricForm" form open, and then have each subsequent line of text be displayed in their corresponding text boxes. I know I need to use ReadLine or LineInput, but I don't have a clue what to do.Assuming the syntax I've displayed below would just magically work (if only life were that easy), it would look something like this
If FirstLineOfTextInFile = "English" Then
EnglishForm.Show()
ElseIf FirstLineOfTextInFile = "Metric" Then[code]....
And so on...I read a lot of articles from the MSDN library and exhausted each link that I've looked through from Google and Bing, but most only retrieve data from the file to a single text box through some loop or streamreader and don't take into account multiple forms.
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Jun 25, 2010
I'm trying to read a text file that contains info like this:
ACX-101-011 , J2168
BTXR-130A-013, D6733
AJ4-233-614, T8211
I want to split each line at the comma and write the left side to a textbox and the the right side to another textbox. I'm close, with the code below, but I can only post results from the first line in the file. How do I loop this and append the text results in each of the textboxes.
Dim TempFile As String
TempFile = "temp.txt"
Dim sw As StreamWriter
[Code].....
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Apr 4, 2011
I have a checked list box that is populated with the text from a text file. I started off with this code:
Dim FileToLoad As String
FileToLoad = TextBox3.Text
Dim fs As FileStream = New FileStream(FileToLoad, FileMode.Open)
[code].....
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Jun 14, 2011
I am trying to import a TAB (NOt comma) delimited text file into a DataGridView. The following code works fine if I have a comma separated file. All I have to do is change the FMT to "Delimited".It just does not work with FMT=TabDelimited. All columns are read into single datatable column. The text file is ANSI text and I have double checked to make sure Tabs are tabs and not spaces, even exported a sample Tab Delimited file from Excel.Can this even be done using Text Driver? [code]
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Nov 20, 2010
How do I play a WAV file while the computer is reading aloud a text file? It uses Text to Speech synthesis and I need a laughter wav to play when the computer comes across something funny in the line.
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Dec 15, 2010
I'm a little new to VB, and I'm in a class for it, but I'm trying to do something we aren't going to learn in the class (mostly out of sheer interest) and I need help. I'm trying to read lines from a text file into a listbox, each line representing a new item on the listbox. For example, if the text file reads: [code]I want to be able to take that as is and read it into a listbox, where those words would appear in the exact same fashion; as a list, each as separate items. I've looked at the Help stuff and learned (sorta) about delimiters... but the thing is I don't want to write my entire list in a continuous line separated by commas--I want it to keep reading each line, and moving on to the next, until there are no more lines left. I am thoroughly stumped, and would appreciate it SO much if someone could help. For a frame of reference, this is the point I'm at now with my code: [code]Note that when I run the program, all it will do is read the first line of text available and stop; once I press ENTER in a text file, it decides to stop reading.
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Jul 30, 2009
im trying to read a online txt file and its not working [code]but it has a uri error i think in doing it wrong but need help with how im doing it wrong, all i want to do is read the text from a file online not from the system should be easy.
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Jul 4, 2010
Usually, the text file that would need to be read and processed would be local (on the computer the program is run), but for this example, we need to get the data from an online text file.
I have searched on google for nearly an hour now and haven't found anything of any real use. One of the earlier projects we submitted used a similar target, and I managed to get it working fine, however I dont have the original source code with me and I cannot remember how I did it.
I believe I used a Net.WebRequest method of some sort, because I had tried using StreamReader and ended up with an URI error or something like that.
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Jul 17, 2010
I have just recently been using VB 2010 after using VB5. I have noticed a lot of changes. The problem I have is that I wish to open and save text files to and from arrays in the background. I've attached what I would do in VB5. I have searched around, but all the examples I find use a Textbox instead of an array. Can anyone show me how I can do this with VB 2010?
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Nov 2, 2011
I want to read the text file and check whether its contain the specific string or not at the end of the text file. If it doesn't contain the specific string, I want to append the text file to write the specific string.. Can I use this code? But its not working..What is the problem actually?
Dim line As String = ""
Dim fileName As String = "C:\Drill Blind.txt"
Dim sr As StreamReader = New StreamReader(fileName)
[code]....
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Jan 25, 2010
I have a fixed width delimited text file, the data spans over several line. I do not know how to approach in reading this file and displaying its results to a gridview.
[Code]...
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Nov 29, 2009
How could i echo individual lines?, Like for example if i want to echo the hostname line, How could i just echo 'Christopher's Testing server', and not the hostname part too?
echo Executing Server Config...
lanmode 1
rcon_password changethis
password password321
maxplayers 20
[Code]...
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Jun 10, 2011
why this doesn't work?
Public Sub LoadFile()
Dim file As StreamReader
Dim temp As String
[code].....
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Apr 30, 2010
got this code where users created txt file with email address and password [code]
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May 29, 2012
I want to know how you would read in from a text file line BY LINE with timer and put it in a Listbox. Lets say I want to read this text from text file
1234232123
12342321
234223423421
23423233
Now i set the timer interval 300 and debug, i expect this to put each number in the listbox. I tried doing this but i failed
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Jun 26, 2010
I want to check if a textfile is in a CD, read the file, and if it contains the text "blahblah", do something. If it doesn't, MsgBox("Error!"). :P I only know how to open and close the CD drive. >_<;
[Code]...
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Feb 26, 2012
In my project i read text file line by line by checking with a specific word and store that line into textboxes.
My code id
Dim fName As String = " Z:\rdf1.txt" 'path to text file
Dim testTxt As New StreamReader(fName)
Dim allRead As String = testTxt.ReadToEnd() 'Reads the whole text file to the end
[Code].....
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Oct 14, 2011
Here is my code for splitting "," from the text file. But the problem is I don't know how to include looping in the code to make the code read the whole text file. when I run this code, it's only read the first line of the text file.
Dim sr As StreamReader = New StreamReader("C:\drill.txt")
Dim data As String()
data = sr.ReadLine().Split(",")
[Code].....
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Jun 14, 2012
i have this simple code from a vb.net project:
Using sr As New StreamReader(NewSwitch.ActFolder & NewSwitch.ActSShowName)
worker.ReportProgress(LoadSwitchProgressType.Normal, "Loading Active SupportShow, size " & NewSwitch.ActSShowSize & "...")
NewSwitch.ActSShowData = sr.ReadToEnd
End Using
Obviously it reads a file - a 20M text file to be exact. Now if this 20M file is on my PC, it reads in about a second. If i open this same file in a text editor, such as Conext, its about the same.However, if this 20m File is on a network location, the Context text editor loads the file in about 1 min 40 seconds. I would have expected similar times with my vb.net code, but it took 7 minutes 45 seconds.I have no idea what the text editor uses to read a file, but i figure i must be able to get similar time in vb.net somehow.
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May 21, 2009
I am creating a hangman game for a class prject. I have done everything apart from randomising the word that is loaded in. I have tried a few different types of code but just can't seem to get it. I have tried this:
[Code]...
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Sep 16, 2010
I'm trying to create a program to read a file and create a table. Public Class Form1
[Code]....
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Mar 1, 2012
Im doing some work right now for a class and this is my first time ever using arrays and im having some trouble. I need to make a program that places the names in an array using a text file and displays all presidents for a requested range of numbers. every time i try and run the program it says "Object reference not set to an instance of an object." but im not really sure what that means, Heres the code
Public Class frmPresidents
Dim numLow As Integer, numHigh As Integer, Pres() As String
Private Sub btnPresidents_Click(ByVal sender As System.Object, ByVal e As
[Code]....
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Jun 30, 2012
I am trying to create a program that will refresh a *.log file within the program itself (in a RichTextBox), but while the actual application that is writing to that *.log file is open and is utilizing that file as well.
I have tried multiple things with StreamReader, but I can't seem to get anywhere...
Simply, I want to be able to read a *.log file in my Visual Basic 2010 program, but while the actual application that is writing to it is running itself.
How can I do this, as I keep getting the error that another process is utilizing the *.log/text document?
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