Read Lines From Text File 1 And Delete Those Lines From Text File 2?

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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File I/O And Registry :: Read One Text File And Put Lines In Different Text Boxes?

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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VS 2008 Delete Lines In Text File?

Dec 27, 2009

remove line from text file?

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Delete Listview Items & Text File Lines?

Jun 18, 2012

i want to delete an item on a listview, this is my code

If ListView1.SelectedItems.Count > 0 AndAlso MessageBox.Show("Do you want to delete this item?", "Confirm", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then 'make sure there is a selected item to delete
ListView1.SelectedItems(0).Remove()
End If

now my problem is i want to delete that item on the text file line

( using streamreader and streamwriter)

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Delete The First And Last Lines From A Text File In Visual Basic?

Jan 20, 2010

I've seen posts on deleting the lines from a text file that are specified as a function parameter, but I only need to delete the first and last lines from the file.

I'm still a newbie when it comes to working in files, but it seems that it should be simple to delete the first line... Just delete all text from BOF to the first CrLf character. Am I right?

As for the last line, I understand that I'll have to get a count of the lines in the text file to find it (as the file won't always be x amount of lines long).

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VS 2005 Read A Text File / Pick Specfic Lines And Save As Different File

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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Read Certain Lines From Text File

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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Read Certain Lines In A Text File?

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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Read Every N Lines From Text File?

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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Read The Text File And Take Only Lines From 1 To 20

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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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?

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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Delete Few Lines From The Text File Either With Line Number Or With Content?

Mar 31, 2009

i want to delete few lines from a big text file , normally this lines are at the starting of the text file , so it is possible that i can enter the line no from input box and the vb.net can delete that particular line number from the text file ,

[Code]...

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Read A Text File 10 Lines At A Time?

Sep 24, 2010

How can I read a text file 10 lines at a time?

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Read Certain Lines From Text File In Program?

Mar 11, 2010

I would like to read a file and display certain lines ( like from line 5 to 10) in a label. i know how to read the file line by line but not the specified line i want.

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Read Lines From A Text File Randomly?

Jan 11, 2011

i wanna read lines from a text file randomly until all the lines are read & wanna set a time interval in each two words apart. think a piece of code to do that in vb.net?

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Read Lines From A Text File To An Array?

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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Read Different Lines In A Text File To Show In 2 Different Textbox's?

Dec 16, 2010

i want 2 textboxs to read from 2 different lines in my textfile.how can this be done?

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Read Text File And Output Multiple Lines To A Textbox?

Nov 3, 2010

I'm trying to read a text file with multiple lines and then display it in a textbox. The problem is that my program only reads one line.

Imports System.IO
Imports Microsoft.VisualBasic.FileIO
Public Class Form1

[code]....

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VS 2008 Read Specific Lines From Text File Into List Box

Nov 15, 2009

I am trying to read from a file that was created with a stream writer the names line from the text file that contains data for name, phone number, pager number, cell number, voice mail, and email.What I need to do is read and load the names from the file into a list box, and then from the list box be able to choose each name and have the information (phone, pager, cell, etc.) show up in text boxes that goes with the specific name.

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Read Lines In A File - Split The Lines And Spit The Result To Another File?

Aug 3, 2009

I am trying to make a script to spit command lines to a bat file to compress a bunch of files singly and then delete the original ones. I am sure that is easy to most of you, but I living a ____ trying to do this. A have a file list like this one belo, which was created with a command -- Dir /b /s /a-D N: > filelist.txt

[Code]...

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Read Lines In A File, Split The Lines And Spit The Result To Another File?

Oct 20, 2009

read lines in a file, split the lines and spit the result to another file

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Read Lines From Txt File After Every 7 Lines .net?

Mar 17, 2012

below are a few lines from my text file(10929 lines)I need to read each line and insert into MS Access. each line is a column in my table and the record changes on every 8th line or to be more specific(on every 8th line you will see a number [1,2,3,4,5,6,7,8,9.....] this is where another record starts,

[Code]...

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File I/O And Registry :: Deleting Lines In A Sequential Text File?

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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Import Different Lines Of Text From A Text File?

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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Align The Lines Of Text File?

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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Changing Lines In A Text File?

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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Count The Lines In A Text File?

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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Displaying Last 12 Lines Of Text File?

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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How To Sort Lines In Text File

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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Number Of Lines In Text File?

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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