Skipping Lines In Text File Source?
Jul 30, 2009
I have a text file 'source'. I want to skip 4 lines then grab the 17th through 33rd characters and assign them to a variable. Then drop down to the 9th line and grab the 10th through the 19th character and assign them to a variable. Then skip to the 27th line and write each line to another file with these two variables appended to the end of each line. I can write the lines to another file easy enough but I'm not sure about skipping around from line to line or grabbing the variables.
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May 22, 2011
How to write back into a text file with skipping the first 2 lines
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Nov 4, 2009
The load event goes through two different List(of T) in its own For Each loop. When the form is run for the first time, the first list is populated, the second one is not so the first loop runs but the second one does not. Then an integer that would normally be modified by the second loop remains at 2 and is assigned to a private variable integer, _handsRemaining.
Here is what it DOES. It runs through the first For Each loop and populates the appropriate field. It ignores the second loop because there are no weapon Class instances in that list. Then it goes wrong. It IGNORES the remaining lines (including the third MessageBox.Show) and somehow assigns a value of 0 to the private variable, _handsRemaining.
Private _handsRemaining As Integer
Private Sub Inventory_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim hand As Integer = 2
[code]....
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Jun 18, 2012
I'm not really sure how to word it, if it is possible, but part of my program reads from a text file. It then pulls out the necessary information needed from that file by finding key identifiers. Right now the code is written to find the first key identifier and then read each line after that, locating each subsequent identifier and pulling the data from it. In a few cases, the format examples I've worked with are a bit different which results in a runtime error. How can I tell the program to essentially skip that part of the text file if it's not reading it right and continue moving on? Here is somewhat of an example of the text file.
DID/"DATA EXTRACTED HERE"
NAM/"DATA EXTRACTED HERE"
STR/"DATA EXTRACTED HERE"
[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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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 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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Oct 7, 2009
I a very large text document, I need to read some lines and at the end of each line, insert a text from the header of each page to he preceding lines.I have the following code the reads the file and displays it on a list box.Public Class Dialogs..[code]
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Mar 22, 2009
I know that Deleting a specific line in a sequential text file is impossible but instead copy the needed lines and not copying the unneeded ones to an output file .. killing the old one and renaming the new one with the same.. I can't make this step...
That is my record file
Code:
Input #1, CustomerName, CustomerHomeAddress, CustomerBussAddress, CustomerTel1, CustomerMob1, CustomerID, DateRent, CarRegPin
Code:
"Josek Sam","68 West Land Street","149 Union of States","4524563","45635463","JOSKSAM1",#2009-03-02#,"MILANCGLZ2008"
"Josef Malm","142 Unions Street","64 Hamersters Street","452504","42542054","JOSFMALM2",#2009-03-06#,"MILANCGLZ2008"
"Dave Green","131 Oxford Street","96 BlueBane Route","452542452","43254345","DAVGRN3",#2009-03-07#,"MILANCGLZ2008"
I made a form that when you put your CustomerID in Text3 Box.. it access the records and make some calculations. now.. The customer will return the car.. Then his data should be deleted.. I want to know how to make that when I enter the CustomerID and press on the Command button .. It copies the other lines to a new output folder and doesn't copy these ... So it appears to be deleted using this way..
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May 22, 2010
how to import different lines of text from a text file in the same directory to different textboxes ?e.g. line one in text file to textbox1.text ect.
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Jul 28, 2009
I have a lines like this in my text file
17.0 28 Black (2 07.00 56.0) [1 17.79 60.3] 52611 -39725 188611 35775
17.0 28 Black (2 17.00 75.0) [1 17.79 60.3] 24111 30275 188611 35775
17.0 28 Black (2 09.00 61.0) [1 17.79 58.3] 45111 -25725 191611 35775
17.0 28 Black (2 16.00 70.0) [1 17.79 58.3] 31611 23275 191611 35775
[code].....
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Feb 17, 2010
Is there a way to specify where in an open file a program is supposed to look (like specifying the current line)?
I'm using FileOpen(1, path, OpenMode.Input)
to open the file, but i need to jump from place to place in it
Here's what i'm trying to accomplish:
I'm trying to navigate round in a file containing questions for a quiz game, but am having no luck.
The general form is like this
**********
~(tile)~(question)~(answer)~
~(tile)~(question)~(answer)~
~(tile)~(question)~(answer)~
[Code]....
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May 10, 2012
Below is what I've been using. While it does work, my program locks up when trying to count a rather large file, say 10,000 or more lines. Smaller files run in no time. Is there a better or should I say faster way to count the lines in a text file?
[Code]...
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Apr 9, 2010
I have the following code that displays the last line of my text file:
VB
Private Sub btnCurrent_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCurrent.Click
Dim path As String = "C:Documents and SettingsTwiLiteDesktopWindows Programming - Laura Malave/MadEaters SolutionMadEatersSurvey.txt"
Dim readText() As String = File.ReadAllLines(path)
Dim s As String
For Each s In readText
lblResults.Text = s
Next
End Sub
How I can display the last 12 lines of code instead of just the last line.
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Jul 14, 2009
I have lines like this:
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
11.0 28 Black (2 06.00 01.0) [T375 ] 135111 -46725 188611 35775
11.0 28 Black (2 01.00 18.0) [2 15.21 26.3] 109611 -81725 97147 17718
11.0 28 Black (2 01.00 12.0) [2 15.21 26.3] 118611 -81725 97147 17718
11.0 28 Black (2 01.00 49.0) (2 13.00 11.0) 63111 -81725 120111 2275
12.0 28 Black (2 07.61 19.0) [T377 ] 108111 -35472 191611 35775
13.0 28 Black (2 11.50 19.0) [T380 ] 108111 -8225 229111 14775
13.0 28 Black (2 10.50 19.0) [1 14.79 33.3] 108111 -15225 229111 14775
13.0 28 Black (2 09.50 19.0) [T378 ] 108111 -22225 229111 7275
13.0 28 Black (2 01.00 10.0) [1 12.77 44.7] 121611 -81725 212079 659
I want to arrange this lines according to the number in [Txxxx] from small to big then write all the line which not contain[Txxx] at the below of sorted lines. How to do this? is that possible?
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Sep 4, 2011
Is there a way to see how many lines are in a text file? This also includes blank lines. I have seen a lot of code in this forum before related to my question, but they stop if there is a blank line. I want it to be so that if there are like 10 blank lines
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Mar 24, 2011
I have this code now doing and that is creating my chart from data off a text file. The final task I need to be able to do, to complete my program is have a way to select how many days of data to populate my chats with via a Text Box input. I am thinking I will need to read the complete text file first to count how many lines are in it, then what ever is put in the text box it will take that many lines of data from the text file and populate the chart. For this to work correctly it would have to read the lines of the file back wards.(last line of file would be the first line..) e.g. textbox1.text = "7" then the chart would show only the last 7 lines of my data.
I was looking up examples of Counting the lines in the file, I think I am close here...
Dim fso As New FileSystemObject
Dim txt As TextStream
Set txt = fso.OpenTextFile(ReadChart, ForReading)
txt.ReadAll
Textbox2.text & txt.Line & " line(s)."
[Code] .....
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May 1, 2009
I want to make a program that reads the line of a file, and puts it into a text box, then reads the second line in that file, putting it in another text box... Say i only have a file with two lines, how can i do this?I have written a code, but it only works for the first line. Is there a preset function in Visual Basic that will allow me to read a certain line?
Imports System.IO.StreamReader
Dim AllText As String = vbNull, Lineoftext As String = vbNull
Dim Open_File As New OpenFileDialog ' Dim Open_File as a Open File Dialog
[code]....
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Feb 25, 2011
How can I read every eight lines of a text file, store it in arrays to load into a datagrid?
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Oct 12, 2009
I need to read the text file and take only lline from 1 to 20 and writ it in another text file. Is that possible to do, How can we do this?
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Dec 1, 2008
I am trying to read a specific line from a text file and for some reason when I set my variable loopCounter = 1 To 5 it jumps all the way down to the word "Marty" in my text file but if I just change loopCounter = 0 To 5 it jumps to where it should be which is the letter "M" right after "25". I'm trying to get it to read "25". as this is an assignment for a VB class I'm taking. My text file is at the bottom.
Do While readFile.Peek > -1
For loopCounter = 1 To 5
readFile.ReadLine()
[Code].....
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Jul 22, 2009
I have lines like this in my text file
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
11.0 28 Black (2 06.00 01.0) [T375 ] 135111 -46725 188611 35775
[Code]....
I want to remove all the line which contain [Txxxxx..] and place it in another file. i want to be do like cut and past. Is that possible. Can we remove lines in text files?
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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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Feb 13, 2011
Text file
a
b
c
d
e
Want to turn them into e,d,c,b,a
What's the most efficient way to do so? stack? Queue? List?
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Jul 14, 2009
I have lines like this:
Quote10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
10.0 28 Black (2 01.00 15.0) [1 06.81 58.3] 114111 -81725 191654 -41066
11.0 28 Black (2 06.00 01.0) [T375 ] 135111 -46725 188611 35775
11.0 28 Black (2 01.00 18.0) [2 15.21 26.3] 109611 -81725 97147 17718
[code]...
I want to arrange this lines according to the number in [Txxxx] from small to big then write all the line which not contain[Txxx] at the below of sorted lines?
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Mar 11, 2010
I am reading a textfile and extracting information from each line. For example string1 and string2. I am then writing these string to a datatable. However, sometimes there will be repeats in string1 and string2. If there are repeated lines I would like to be able to delete the repeating line and add a counter to find the total number of repeating lines. so if a string repeates 3 times I would like there to be a column with a 3 displayed next to the line in my datatable.
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May 3, 2011
How to read from text file that have a line with string A and ignore lines with string B.
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May 25, 2012
I have a windows form with a textbox and a button, what I am trying to do is enter a number in the textbox and when clicked on the button to cut and paste the data in to a new text file (from number 0 to the number I entered).ie, textfile 1 has 100 lines of data, I enter 25 and press OK I would like to take the first 25 lines and save them into a new text file and save the remaining lines in textfile 1 so it should be like textfile1 75 lines and textfile2 25 lines.The closest I've come to this is the following but this only deletes the one line..[code]
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Sep 11, 2010
I'm trying to make a small program that will check if the lines repeat.
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Feb 8, 2012
I have 2 text files that are formatted in standard XML One of them contains some lines that need to be copied to the other. What i am trying to do is search through the first file until i see the string "<Segment" then copy all lines into a rich text box up until the string "<segment/>" I Then want to look through the other file until i find the string "<Jointfree/>" then copy the contents of the rich text box to underneath the Jointfree String I Also need to search the second file until i find the string "<Markers/>" and then paste some text into the line above the markers tag.
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