Reading Text File Line By Line Into Array?

Mar 19, 2012

I must use streamreader to read text file line by line into array.

Here's what I've got.

Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
Dim numbers() As Double = New StreamReader(txtfile.Text)
Dim numbersarray() As Double

[Code].....

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Reading An Editing A Text File, Line By Line

Sep 11, 2011

Basically, I'm creating an application which takes a list of words in .txt format, such like this:

Abc
Def
Ghi
Jkl
mno

What I want to be able to do is modify the words, one by one, so that I end with

Abc1
Def1
Ghi1
Jkl1
mno1

or whatever the user wants.

I created this app in C++ to get the logic, since I am more confident with that

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VS 2010 : Reading Line By Line From A Text File?

Feb 13, 2012

the following code was to be entered to read each line of the file "line by line" It did not work for me as instructed and I am trying to understand why?

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FILE_NAME As String = "C:UsersOwnerDocuments est.txt"
Dim objReader As New System.IO.StreamReader(FILE_NAME)
Dim TextLine As String

[code]....

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Jun 23, 2011

I'm reading a text file with StreamReader, line by line. If a condition is met, then I do an operation and then start reading the file again from the first line. I realize I could close and then re-open the file, but surely this would be very slow.

I could do this easily in VB6, but pulling my hair out trying to do this in vB.net. It seems that 'Seek' is the function to use, but it doesn't work.

I've seen other examples, where it works, but you must open it a different way -- with a file number.

Imports System.IO
Dim I as Integer
Dim LineText as String

[Code].....

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VS 2008 Reading Text File Line By Line - Put Into Text Boxes

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Basically what I'm trying to do is read a text file line by line. After each line is read, it will put each line into a separate text box. I've been trying to do this for a while and so far I haven't been able to. I tried using a for loop, but that just put all my lines in to one textbox.

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Reading A Text File Line By Line?

Jul 28, 2011

i got vb to read the text file but it reads the whole thing and displays it on a text line,how can i make it so it reads it like 1 line at a time after every click,so if my text file is like this

hello
goodbye

then i dont want it to display both, i want it to display hello and if i click a button again then it displays goodbye?

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Reading Text File Line By Line In .net?

Oct 31, 2010

i am doing program to read text file and fill the data to multi array , in my code i tried to read the first line of text file to array (here i used class) to save this data on it, because i will use it to read the another lines , files have the following format (all numbers are integers, all intra-line separators are spaces): First line: Number of events, number of rooms, number of features, number of students after the first line as u see we have 3 line have 10 which mean the One line for each room:Roomsize and after that the line which start from zeros and ones it format as:-

4 3 3 2
10
10

[code]....

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Dec 1, 2011

How would i go about reading a file Line by Line that within that line The values are delimited by " Example of the data:

"bob" "cat" "1243"
"steve" dog" "6789"

I've started this with this code but not sure how to go about the next stage:

Using MyReader As New _
Microsoft.VisualBasic.FileIO.TextFieldParser(My.Application.Info.DirectoryPath & "Records28112011.jd")
MyReader.TextFieldType = FileIO.FieldType.Delimited

[code]....

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Jun 29, 2009

i would like to store contents from a text file line by line to arrays before copying them to another text file. what i have is currently like this:

[Code]...

Currently I'm only able to store the whole content into one variable, would like to store the content line by line in arrays.

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Oct 14, 2011

what i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.

sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.

full code here
-------------
Dim objReader As New System.IO.StreamReader(sOpenFile.Text)
Dim sTextLine As New ArrayList()
Dim sText As String = ""
Dim i As Integer = 0

[code]....

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Aug 13, 2011

I have a couple of VB6 programs which work 100%, however not under W7, so I need to upgrade them to Visual studio 2008 pro which I own a copy of.The VB6 software used to open a file, read in a line of data and process it then save it in a new file, before going on to the next line input.I need to convert this process to VS2008 pro and can't get my head around it..... getting old you see.I also have a few other needs to do with file handling, but I may be able to sort them myself if I get a start with the above problem....

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May 1, 2009

I have gotten farther along in my work, and the "add friends" works great Now, I am working on deleting friends. I have the following snipplet from my code:

[Code]...

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Apr 1, 2011

I'm having trouble with reading a .txt file line by line, converting it into a string, then putting it into a listbox. When I execute I get an error saying "IndexOutOfRangeException was unhandled" Here is my

[Code]...

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File I/O And Registry :: Line By Line TextFile Reading?

Mar 5, 2009

I'm making a program which has 7 textboxes. I intend the program to be used for classes in school, so the text would be like 2D Art, Geology etc... whatever your classes are. I have figured out how to use the streamwriter to take the text in the textboxes and write them to a .txt file however, my issue is with loading the text from the .txt file back into the textboxes. I did figure out how to write it so that all the text in the .txt file is loaded back into textbox1 but I have 7 textboxes... Here's the coding for the Load button:

Private Sub Button46_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button46.Click
Dim MainWindowLog As String = "V:Users(O.o)~(--_--)~(o.O)DocumentsVisual Studio

[Code].....

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Sep 28, 2008

How do I make my program read the next line of a txt file instead the first line.

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May 16, 2012

I've been trying to read the last line of a text file but the code i have done seem to be giving me errors, i'm not sure what i've done wrong.

Public Shared Function ReadLastLine(path As String, encoding As Encoding, newline As String) As [String]
Dim charsize As Integer = encoding.GetByteCount(vbLf)

[code].....

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Nov 21, 2009

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1. Time: 10/27/2009 4:58:09 PM
Title: Title
Author: Author
Entry: Test

2The 2 at the end specifies what the number will be next time. How do I do this?

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Code:
' File exists, read file.
Dim objReader As New System.IO.StreamReader(fileName)[code]....

Is there a quicker way to do this? And possibly a progress bar to show how far it is through the file?

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I am trying to read in a TextBox line by line and take the first 7 characters of each line and output everything in another TextBox.This is what I have so far.

Dim line, lines() As String
lines = TextBox1.Text.Split(Environment.NewLine)
Dim i As Integer = 0

[code].....

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My block looks as such :
public string CheckAccount(string username, string password) {
StreamReader sr;
string filename = "H:\AccountInfo.txt";
string s;
string result = "";
[Code] .....
My code doesn't read from the 2nd line onwards, it just hangs.

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Highscores
Name
Score

[code]....

etc. But I am not sure on how to read in a specific line. So for example I want lblHighscore1.text to equal line 3 of the text document (as vb counts the first line as 0) So far all I have is this;

Dim objReader As IO.StreamReader = New IO.StreamReader("C:UsersKarlDesktopHighScore.t xt")
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I've been trying to fix this problem for days, but I haven't been able to successfully apply any of the code that I've found to my project the way it is right now. Maybe I'll need to change the way it reads the file altogether.

Anyway, I'm trying to read through a text file line by line, reading each line into its own string.

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I need to be ble to know how to search a text file in VB for a particular line and then display it. the files I'm trying to use are set up as: ID, Name, Address, Birthday, Pay-Roll TypeSo I need to know how to search the file for the ID number and then display the rest of that line

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Oct 25, 2010

I have an output file that is putting the information in like this:

R

16

D

18

I

20

I need it to where the code is reading every other line. When I run the program it thinks that it is done once it hits a number. Here is my current code:

[code]...

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VS 2008 : Read A File Line By Line Into An Array But It Skips The Item At Index:3?

Mar 17, 2010

I'm trying to read a file line by line into an array but It skips the item at index:3 I have it msgboxing just to make sure and it wont even touch it.

Dim Btn As Button = DirectCast(sender, Button)
Dim path As String = Application.StartupPath & "Libraries" & Btn.Text.Replace(" ", "_") & ".ipt"
Dim i As Integer = 0
Dim lines As String() = IO.File.ReadAllLines(path)

[code]....

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Apr 9, 2010

I have a problem with a loop that I'm writing where it is just reading and printing the first line of a text file.

ofdFile.Title = "Choose file to read"
If ofdFile.ShowDialog() <> Windows.Forms.DialogResult.Cancel Then
sr = New StreamReader(ofdFile.FileName)
End If

[code]....

Do i have the .peek set up wrong where its only doing the first line?

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Mar 7, 2012

I need to be able to know how to search a text file in VB for a particular line and then display it. the files I'm trying to use are set up as: ID, Name, Address, Birthday, Pay-Roll TypeSo I need to know how to search the file for the ID number and then display the rest of that lin

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Oct 15, 2011

I am currently writing a Login Script, and I am having trouble making StreamReader read a specific line in a text file. This is what I have so far (not the entire script, just the reader lines):
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Dim file As String = (path + "LogDat.txt")
Dim sr As New IO.StreamReader(file)
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Dim line4 As String = sr.ReadLine(4) '' Supposed to read line 4
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Reading A Specific Line From A Text File And Displaying It In Individual Text Boxes?

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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Read File Line By Line To Array List

Jun 22, 2009

I have code that reads the whole file, not line by line.

Here is the code:

FileOpen(1, filename, OpenMode.Input)
Do While Not EOF(1)
datatodisplay = LineInput(1)
Loop
FileClose(1)

I would like to know how I can read the file line by line and then add all results into an array list.

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