Removing Lines In Array (Text File Contents)
Jun 10, 2011
I am using streamreader to read and streamwriter to write, I have put the lines into an array
[text file contents]
Remove [ ] *****************
-----
;this is -----
------
;this is another -----
[end of example file]
I want to remove the lines that start with "****" and keep deleting lines until i reach ";" I thought this would be simple but im missing something and I don't want to put this array into a listbox it is being writen to a text file.
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May 29, 2012
I am in the process of developing a VB.net helper application that will combine two text files into one, remove the extra blank lines, do some calculations and spit out a new and improved text file.
My question is: at the beginning of each file is a header row that starts with a "01". How does one go about removing all of the other "01" rows but leave the first header line?
So far, I have succeeded at removing all of the "01" lines, which isn't what I want but hey, I got it to work
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Mar 24, 2010
I am using the following code to write lines to a file. I seem to get Zero's after my text.Any suggestions to get the trailing zeros out of my text file? [code]
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Jun 22, 2010
I have written a simple script to get a bunch of lines from a text file (they will be filenames eventually) which are split by new lines and puts each one into an array..
Dim ary() As String
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If My.Computer.FileSystem.FileExists("C:MenuFiles.txt") Then
[code]....
The only thing I can do for now is either use the substring function to remove the first character from all array values after 0 but I don't like that because it's messy and what if the split "works" as I want it to one one of the lines and knocks of the first character when I don't want it to.
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Feb 19, 2012
I am unable to read from the text file in VB. I want to read the contents for text file and store them in array. See my code below and the text file. How should I read this text file.
'Purpose : This program will read student name & final marks for a set of students from the text file and then calculate & display class average, class standard deviation, number of students above class average, name of student with highest mark, number of students with A's(90-100), B's (80 < 90), C's (65 < 80), D's (50 - < 65) and F's (<50).Calculate for standard deviation of a set of numbers:Step1. :Find the average Step2. : Square the difference between each number and the average
[Code]...
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Mar 26, 2009
I'm trying to do is to read the lines from a text file, and transfer them to an array.[code]...
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Oct 26, 2009
reading a text file into an array after a certain line in the text file, at the moment i am trying to do it using the method below: but i am having trouble thinking about how i can copy everyother line and also how i can count through the array the i = 0 and i = i + 1 are there while "i".
In a line what i would like to do:I need to copy everyother line for a known amount of lines that appears after the line " I FT I KT I " in a text file, but i do not know the position of this first line in the file.
Dim lines() As String = File.ReadAllLines(sessionsPath$ & "vmcg.afm")
For Each inline As String In lines
If inline.Contains(" I FT I KT I ") Then
[code]....
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Feb 16, 2010
I am using the follow code to obtain source code from my site:
Dim downloader1 As New Net.WebClient
Dim source1 As String = downloader.DownloadString("[URL]")
But there is code in the file which I am loading, something like:
<!-- load time: 0,05ms -->
<!-- Queries: 25 -->
But I want to remove all the <!-- --> lines from source1.
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Sep 27, 2009
I am adding line entries in a .ini file. The problem is, I am creating duplicate lines in the file, which I do not want to do. I searched this issue online, and the consensus is to use an array, loop through for duplicates and create a new file. However, being so new at this and teaching myself how to code no less, I am at a dead end. This is not a school project, it is something I am doing for work on my own time. I have all of my code done for the program except for this last step.
[Code]...
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Dec 12, 2009
I am trying to turn data in a text file seperated by spaces into a 2D array.
It is for a math game. The data is statistics based on the performance of the user. One line looks like this "John Doe 0 0 1 3 0 6 0 22"
I need to put the line into an array and then be able to search by name to display the results. I keep getting extra spaces in the input of the array so the data isnt where it should be. It seems that the first entry works correctly, but appended lines do not enter correctly.
Sub ResultsToFile()
Dim FILE_NAME As String = "C:\Student_Results.txt"
Dim RecordString As String = NameForm.PlayerFirstName & " " &
[Code].....
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Oct 31, 2011
I need assistance with posting lines from a text file (test scores) into an array. From there, I'll have to average the test scores, find the standard deviation (without using the built in function) and assign grades based on the test scores' deviation. I have already written the code for the user to search and upload a text file. And I should be able to do the standard deviation of the array, if someone can help give me an example of how to send the text file to array and average the lines of the array without using the built in math functions.
[Code]...
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Mar 15, 2012
As you will see from the code below I need to be able to tell before the array runs how many members of the array there are or else the program will crash. How can I redim the array depending on how many lines are in the text file (RECORDS.txt)
Imports System.IO
Public Class Form1
Structure Nation
Dim name As String
Dim continent As String
[Code] .....
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Dec 23, 2011
As you will see from the code below I need to be able to tell before the arrayruns how many members of the array there are or else the program will crash. How can I redim the array depending on how many lines are in the text file (RECORDS.txt
Imports System.IO
Public Class Form1
Structure Nation
[code]......
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Apr 22, 2010
I'm working on a homework assignment for class from the Programming in Visual Basics 2008 published by Mc Graw Hill. It is the Chapter 11 Case Study. We are to create a program that makes a text file and populates it with data. Then use a second program that reads the contents of the text file into form containers. The first half is working perfectly.
[Code]...
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Sep 15, 2009
I have a text file containing lines of data (File 1). I need to delete all the lines in another text file (File 2), which are found in file 1.So I could read file 2 line by line. And then once the line has been read, read file 1 line by line to search for a match. But that's going to be painfully slow.Or I could read file 2 into memory. And then read file 1 line by line and REPLACE the lines in file 2 with nothing, therefore deleting them. File 2 could be 100 mb, so I'm not sure about reading it all into memory.
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May 18, 2012
I'm trying to do something quite simple. I need to take a pipe-delimited text file and store the contents of the file in an array.
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Jan 14, 2012
I have a text box that I will paste into a byte array, for example:
02 01 05 BF DD 03
All I need to do is when I click on a button, for the program to take the length of the array and store it in RCVDMSG_Length() and then take the contents of the text box and put it into a byte array RCVDMSG(). From there I think I can figure out how to manipulate the array... but it's this first step that I'm stuck on....
So far I have this in my Form:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim RCVDMSG() As Byte
Dim RCVDMSG_Length() As Integer
RCVDMSG_Length = Len(TextBox1.Text)
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May 25, 2010
I have developed a vb.net dll (.net 3.5) which does the following :
- I have data of several stock market companies.
- They are stored in several folders under a main folder.
- These files are random access files.
- There can be around 4000 files in total for example.
I wrote a program which reads a current csv file and stores contents in array. Then I store name and path of companies in folders (which I was talking about). Then I match one company from csv (stored in array) to companies in user's folder (again reading from array). If found I insert data in the file (random access file). This whole process takes for eg. 2 min my system. A similar program was written years ago by someone in powerbasic which takes slight less time if run one but if run for multiple csv files it takes only a few seconds doing the same thing for other files. When I do the same thing (by writing code to .net dll) and making a dummy app to run it, no matter how many times I run it takes same time. And is way slower than the earlier one (PB) one I was talking about. But if I paste the same code in my win (.net) app and not use .net dll then it runs a bit faster.
I need to show status so if I pass my form's label reference to .net dll and it updates it does that slow down process a lot. As I mentioned I am trying to process the files and it takes longer in .net. What should I do to get best performance? Unfortunately due to unexplainable reasons I cannot change the format or use a db. The files which I am reading/writing (random access files) are use by other products so I have to stick to that format. What I am doing is storing the location of those files in array so that I don't have to search folder again. that is not taking time. But opening reading and writing files is time consuming if I am doing it for few thousand of them. A similar program in powerbasic (developed years ago) runs fast. Running code thru .net dll is slower than running it thru program. Why?
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Dec 3, 2011
I am trying to ping a text file("C:/Domains.txt") which is a list of domains, then have the resulting IP address written to a different text file ("C:/IP_Addresses.txt"). And this action will be done with a Button_Click.
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Apr 27, 2010
basically i am doing something like:
vb
TextRenderer.DrawText(g, mc_Text, MyBase.Font, New Rectangle(Padding.Left, Padding.Top, MyBase.Width), MyBase.ForeColor, TextFormatFlags.WordBreak)
And want to get an array of lines where the text breaks with since TextFormatFlags.WordBreak has been set
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Oct 29, 2009
I am trying to check if a cell in a tablelayoutpanel contains anything and if it does; clear it.I tried tablelayoutpanel.removeat(1) but I need to check if there is actually anything in there, or else it throws an error.
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Apr 9, 2011
Is there a way to make an array from all the lines within a file?
For instance, value 1 of array is line 1 of file, etc.
I found a way on Google, but for some reason if a line says something like: http://domain.com/file/file.exe
It will cut off the line to something like: http://domain.com/file/fi
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May 2, 2011
I'm working on a program that when you click a button called new it pops up a new form asking for you to enter a directory location. If the directory exists it saves it into this file:
"C:WindowsSettingsButtonVariableSaves.ini"
I already have working code that saves each directory entered into the ini file on its own line.
Now in this code I'm trying to call each variable back from the ini file when form1_loads and set it to an array called ary() so later I can set the first 10 saved within the array.
So later:
button1.text = ary(1)
button2.text = ary(2)
and so on to
button10.text = ary(10)
and the reason I set the array to record all lines even if theres more than 10 because I want to be able to add more buttons later on.
Here's my current code for saving lines to an array:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim FILE_NAME As String = "C:WindowsSettingsButtonVariableSaves.ini"
[Code]....
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Jan 4, 2012
I want to read each line from a txt file, but instead of using a for, while etc loop i will let the web browser do it (document completed). I want to increment the next line and let the loop continue till its finished.
Just say the data was inside a textbox, i'd do Textbox1.Lines(count) for line one, then i'd do count += 1 and when the web browser has completed, it would start again and repeat the process.
So how do i read the lines from a txt file into an array without looping? And allows me to specify the line number?
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Nov 11, 2010
i have an array of booleans whose current boolean values I want to preserve but add additional length to the array? How can I achieve that? My code looks like this:
Dim Array() As Boolean
Dim ArrayInterimShort() As Boolean
ReDim Array(119)
[code]....
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May 12, 2009
i have 5 textboxes in a form. I have a streamwriter that writes all of their text to on text file like this:
Code:
Dim xfile As String = Application.StartupPath & "/Set.txt"
If File.Exists(xfile) = True Then
Dim writex As StreamWriter = New StreamWriter(xfile)
[code]....
I was wondering how to get the text under the each number and place it in the corresponding textbox.
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Dec 3, 2010
I'm really stuck on something, which, is probably easy, but I've blown hours trying to figure this out.I need to be able to remove 1 line from a textfile. I will always know exactly what line it is, as, it's the same "string" as a variable. So if my variable is called "removeThis" then I need to be able to Read through the textfile, find the line that is equal to the removeThis string variable, and then rewrite the whole textfile.
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May 22, 2011
I am trying to remove all whitespace from a text file and store each character into an array. Is there any way to combine all the lines together without leaving any whitespace? I tried the .replace method but it only removes whitespace for each line. It currently shows like that, but I want it to be 1 whole block of text without whitepace in every line:
[Code]...
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Nov 11, 2010
I have been working on this for quite some time now. I have a listbox that loads the names from a .txt file. When the user selects names I need it to delete the items from the list. I have the code to remove it from the listbox, but when I reload the form it puts them back in because it's reading the file.
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May 5, 2009
I know this has been asked like a million times, but I cannot seem to find a solution that works for me. I have a text file..and lets say its named Test.txt.I have like a list of stuff in the file and I have a Remove button. I also have a listbox that has the contents in the Test.txt file listed on the form_load. So basically to try to explain this better..what I want is to delete the line that is selected in the listbox when I click the remove button. Let me explain in an example.The Test.txt has the same contents as the Listbox..so say my list is like this:
Hi
How
Are
You
If I have Hi as my Listbox.SelectedItem then I would like to remove that line from the Test.txt. I tried to load the contents of the file in a TextBox too and I can search and find the text in the textbox and focus on it and highlight it but I cannot delete it from there too.
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