Reading From Multi-Line File?
Jun 10, 2011
I have an application that uses the following code to write a number of user inputed variables to a text file on a seperate line per variable..What I can figure out despite hours of googling, is how to reverse the process, and load the data from the text file to re-populate the variables.
Private Sub CmdSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CmdSave.Click
'Check if file exists and warn of overwriting.
Dim Response
If File.Exists("c:EveOreData.csv") Then
Response = MsgBox("Overwrite Existing Save File?", MsgBoxStyle.YesNo, "Overwrite?")
[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 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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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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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 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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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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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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Feb 7, 2009
I need to know how to write multiline .txt file without losing that text which is already in that file.
My.Computer.FileSystem.WriteAllText works well but I dont know how to add linesif its even possible with this.[code]...
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Nov 21, 2009
I'm storing a multi-line text file (in .dir format) in the directory the user chooses, and what I need to do, is when they import it (which my program can already do) I need it to find the end of the file (line) and then read that line, that line will be a number which corresponds with a number system. Basically, the file looks like this
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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Aug 15, 2011
I have a data file which I am de-compressing and then reading line by line.This includes data which is then read by my function which is split into sperate bits then inserted into a database.My reader is currently taking ages. (largest file being 1.8GB)I am using:
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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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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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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Sep 20, 2010
I'm trying to read an .rtf file one line at a time but I'm clearly missing something!The file contains 3 lines and I want each line to end-up in a different RichTextBox, so:
Open File
RichTextBox1 = 1st Line in File
RichTextBox2 = 2nd Line in File
RichTextBox3 = 3rd Line in File
Close File
What am I not understanding? I've tried using LoadFile to load the whole file into another RichTextBox first as I got the impression that RichTextBoxes are indexed - but what I got was strings not .rtf format. I've also looked to see if there's an equivalent of the text-centric ".ReadLine" and nothing seems to fit the bill.
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Jul 21, 2011
I my old vb6 i use the tipical Open "c:somefile.vbw" For Output As #1 ecc...and loop into txt file line by line....Now i'am new in vb2010i need a little project in vb2010
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Sep 21, 2009
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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Dec 27, 2009
I have an array called lines() which is basically an array indicating which lines to read from a file. for example lines(1) = 0 means 'read the first line from the file', lines(2) = 4 means 'read the 5th line from the file' (counting from 0 not 1) The program first reads the file (which has a lot of random lines) so it can identify which lines match my criteria. The way I store the line positions is this:
For i = 0 to noOfLines -1 'total num of lines in file
If count = match Then 'this is my match criteria
lines(x) = i 'store the line in the array
[code]....
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Mar 1, 2010
Trying to read in three variables per line from a text file that looks similar to the first code segment. What we've been taught so far to read in is something similar to the second segment. And it works all and good for single words per line.
If this was C++ I'm pretty sure I could getline and use the comma as a terminator, but I'm not sure if a similar function exists for VB.
Bacon, 15.95, In stock
Stuff, 3044, warehouse
Something here, 84444, end of the road
[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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Jun 2, 2011
I have a list of files to read and have to append them all to one unique file. the problem is that when i open the first file to read. I read the first line and discard it. when i read the second line, its empty, but it is not in the original file. what im doing wrong? [Code]
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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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Feb 7, 2011
a user copies multiple lines of text (say, from an email) into the clipboard. Based on my observations, when one tries to paste the text into a single-line textbox, only the first line is actually pasted in. (I am aware that the "obvious" solution would be to set the Multiline property to True, but there are reasons I am looking to avoid this and to put multi-line data into a single line.)
In the TextChanged event handler, I wrote code that parses the clipboard data to successfully convert it to a single-line, comma-delimited format.
Private Sub txtMassTrackingNo_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) _
Handles txtMassTrackingNo.TextChanged
[Code].....
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Jun 14, 2012
This is a WinForm VB.NET application. Please see the picture below:How to add a line break in a multi line textbox in Visual Studio designer's property section?I tried using abc & Environment.NewLine & def but that was not working.
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Aug 24, 2011
What I have stored in my file is values related to an account. (Just testing, not going to be used commercially). What I need is to draw the values for the username and password, by going through each new line, but .peek() doesn't seem to work for me.
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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Sep 1, 2008
Alright this is what im working with. Im Working with vb.net 2003.I have (X) amount txt files in "C:Marble".In each txt files there are 3 lines.I want to read the first line of each txt file and display them in a listbox. [code] Things i need to Find:
-1 How to tell how many files are in a folder
-2 How to create a loop were it reads the first line of each file in that folder
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Nov 28, 2011
I have been learning VB for about 3 months now at college and decided to enhance my skills by making my own project at home. My project is basically a game where you have to guess if the next number will be higher or lower than the previous version and you can place bets on it. I have done all of this ok but I wanted to create a high score system so that you could save your score.I can manage to write out to a text file ok so that it looks like this
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")
lblHighscore1.Text = (objReader.ReadLine)
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May 30, 2010
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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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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Mar 15, 2012
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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