How To Delete Line From TextFile

Jan 11, 2011

I'm making a function that is supposed to delete a line from a textfile "test.txt". I'm having no problems with finding what line i want to delete. The basic idea is this: read the whole file with streamreaderdelete the linerewrite the file with streamwriter. My problem is the last, how can i completely remove the file content, and write another string in it, writer.writeline just appends a line.

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Delete Or Edit Line In TextFile?

Dec 11, 2010

I have a program that reads a text file tab delimted using OLEDb I need to be able to allow the user to insert a user created record into the file which I can do. The problem is I need to be able to let the user edit that record. From my understanding you can not edit or delete with OLEDB only insert So I thought I would read the file using stream reader, find the line I want to edit and just delete it, rewrite the file, then let the user insert a new record?

Dim strDelimiter As String = vbTab
OpenFileDialog1.InitialDirectory = "C:\"
OpenFileDialog1.Filter = "Text Files (*.txt)|*.txt"

[code]....

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VS 2010 Read Through A Textfile Line By Line Checking For And Removing Duplicate Values?

May 16, 2012

How do i read through a textfile line by line checking for and removing duplicate values?

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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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Reading A Textfile And Using Line By Line And =?

Mar 10, 2009

I have a textfile wich my app will have to read.The textfile will be like this

Hello=Bye
SeeYou=SeeYa
GoodMorning=GoodAfternoon

And so on, each line in the textfile will consist of two words seperated by a = Now I want to load this textfile and then be able to use each line and have a name for the word on either side of the = and then do something with line 1 word 1 and then do something with line 1 word 2 (word 1 beeing the first word before the = and two beeing the one after the =)

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Delete Items From A ListView AND TextFile?

Aug 30, 2011

Private Sub btnRemove_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRemove.Click

[Code]...

i was able to delete an item in the listview, but when i refreshed it, it seems that it would not be deleted in the textfile.

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How To Delete Pariculer Position In Textfile In .net Windows

May 16, 2009

i need to delete particuler postion in textfile..how can i delete..

my text file is like this
function validateLength(oSrc, args)
args.IsValid = (args.Value.length == 10);
}

[Code]...

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Remove Line From Textfile?

Mar 11, 2010

I am having trouble removing a line from a text file. When I click on the button in order to remove the line it gives me an error that access to the file is not possible. Now I assume that the file is in use during me wanting to change it and therefore cant save it while it is loaded in ht application. I have tried a few things but cant seem to get it to work.Essentially what it does is that I have another dialog that a used can add data, the data is then written to the file FilingLocations.txt and then it saves it and loads it again. But once the line is no longer needed I would like to have the option to remove the line agaise.

Here is the code:
Private Sub cmdRemoveLocation_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdRemoveLocation.Click

[code].....

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Read Each Line Of A Textfile And Print It Into Something Else

Jan 19, 2010

I am trying to make a program that can read each line of a textfile and print it into something else. So lets say i have a text file that has:

[Code]...

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Retrieving More Than One Specific Line From Textfile?

Mar 11, 2010

I have a program that searches for a word in a .txt file. When it finds the word I want to print the following 5 lines under that word. So for example: I search for "juice", and my label grabs this out of the textfile:
juice
apple
grape
orange
milk
Is there anyway to this in VB.NET?

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VS 2008 Read Certain Line On A Textfile?

May 17, 2011

I have multiple textbox,I want all of them to read whats inside a text file,but I dont want multiple text files,I just want one.

Here is my code that lets you read a whole text file.

vb.net
Dim FILE_NAME As String = "Directory"
If System.IO.File.Exists(FILE_NAME) = True Then
Dim objReader As New System.IO.StreamReader(FILE_NAME)

[code]....

But I just want it to read certain lines For Example on textbox1 should only read the line <vote>texthere</vote> and so on,

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Read Line From Textfile And Proceed With Command

May 21, 2009

how do i have my app read a line from a textfile and if that line equals "whatever" proceed with command, this case a msgbox.so much work to do and so many choices to choose from...

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Removing Line Number Textfile Only If String Is At The Top?

Aug 8, 2011

I have not had much time to go threw my code properly as this is some urgency. I need to remove line 1 from a textfile if it contains a string but its not working.I have 500 files and not going to do this manually.

Code:
Private Sub btnRemove_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRemove.Click
If String.IsNullOrEmpty(txtDirectory.Text) Then
OpenFolderDialogDirectory()

[code]....

I also feel the function is very pointless sime i am opening the file twice.

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VS 2008 Read/compare Particular Line From Textfile?

Aug 18, 2009

I have a 2 textfiles with a few lines of text.

e.g. textfile1

pos1:1
pos2:10
pos3:1

[Code].....

I need to open both files and compare the lines without knowing which line is different. (mgsbox (pos2.value)<< something like this)

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VS 2010 Value Of A Textbox Matches The First Value Of Each Line In A Textfile?

May 30, 2012

I have some coding which displays a label if the value of a textbox matches the first value of each line in a textfile.

Dim sList As New List(Of String)(IO.File.ReadAllLines("Path"))
Dim i As Integer
For i = 0 To sList.Count - 1

[Code]...

The problem is if the textbox has 1 and the textfile has 11 it will display the label, what would be the best way around this?

I have tried sList(i).Contains etc but none of them are doing the job.

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VS 2010 Prog Appends A Textfile - User Able To Delete Or Modify While Form Open?

May 17, 2012

Prog appends a textfile. Don't want user able to delete or modify while form open. How do I do this?? - As long as form is open user cannot modify or delete textfile. But so the file can be edited from within form

How do I do this. Here is my code so far

Public Class Form1 Dim FILE_NAME As String = "C:UsersBirthdayDocumentsinfo.txt" Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

[Code]...

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Adding/deleting Line To RTB1 Should Add/delete A Corresponding Line To RTB2?

Jan 9, 2010

Is it possible that when a new line (anywhere in a richtextbox) is added/deleted, then a line is also added/deleted in another richtextbox?

[Code]...

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File I/O And Registry :: Each Line Of Textbox To A Newline Of Textfile?

Aug 24, 2009

i know i have to use a loop to get each line of the textbox onto a newline of a textfile but i dont know how to figure out how many lines of text the user has entered into a textbox. I tryed using a try statment to loop until it errors, it seems to work sometimes but other times it only takes half of the textbox and adds it to the textfile. And if atmaweapon reads this, i tryed to make better names for variables. Here is my code,

Code:
Path = ("Meals" & ComboBox1.SelectedItem & "" & TextBox1.Text & ".txt")
File = New System.IO.StreamWriter(Path)
If ComboBox2.SelectedItem = "1" Then

[Code]....

how many line of text there are... im not so shure how good it is to run a loop tell it errors for a textfile, but its the only way i could think of.

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Reading Specific Line In Textfile (skip Some Lines)

Oct 17, 2011

I'm currently use visual basic 2008. The problem is I have try this code but,it produce no output. There is no problem with the code I guess. Here is my code

Dim i As Integer = 0
Dim line As String
'Dim reader As StreamReader = New StreamReader("C:\drill.txt")

[Code]....

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Remove Item From ListBox And Line Of Text From TextFile Referring To Same String?

Nov 17, 2010

How would one remove an item from a ListBox and then remove that line from the TextFile and repopulate the ListBox with new data in Visual Basic.Net?[cod]...

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Delete Line From Form Before A New Line Is Drawn?

Apr 21, 2012

I am using this code to draw a line on a form using textboxes as the x and y coordinates. I then click the button with the code below that will draw the line.

Before the new line is drawn, I would like to have previous lines deleted first.

How can I delete these lines?

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim canvas As New ShapeContainer

[Code].....

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VS 2005 How To Delete A Line By A Line Number

Aug 16, 2009

You would think a search for this would show some results but I have had no luck.If I want to delete a line by a line number from a text file, how do I do that?

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VS 2008 Delete Line Richtextbox If The Line Only Has One Value

Apr 23, 2010

how to delete a richtextbox line, if the line only has one value. Ex:

[Code]...

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Delete Line By Line In The Datagrid

Sep 9, 2009

i am having trouble deleting the individual rows in the datagrid. That is when the user select this row only this row will be deleted. i am getting some errors at the dataset there. the below is my code to delete from the database:

[Code]....

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Reading Text File Into Listbox - Each Line Of The Textfile Is Placed On The Listbox?

Feb 12, 2012

I am starting to learn reading and writing to textfiles. One quick problem. My code here

'Read is the variable that will read the kp.txt file"
Dim read As IO.StreamReader
read = IO.File.OpenText("C:2/kp.txt"[code].....

however when it is read into the listbox those 3 words appear on one line in listbox
How can i make it so that each line of the textfile is placed in each line on the listbox?

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Create A Textfile And Write Some Lines Into The Textfile?

Oct 18, 2010

I am trying to create a textfile and write some lines into the textfile. However, the code that i am using can only write when the textfile is already created in the directory.

For this case, can i actually allow my script to search if a textfile is being created, if not create a textfile ???

Dim pathdir As String = "C:workingdir est.txt"
If System.IO.File.Exists(pathdir) = True Then
Dim objWriter As New StreamWriter(pathdir)

[code].....

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Delete Duplicate Line?

Dec 15, 2009

I have lines like this in my text file

10.0 28 Blue (B1-T54 ) [1 01.69 65.4] 47234 -22234 181017 76921
6.5 28 Blue (B1-T55 ) [1 01.80 50.2] 48234 -21234 203852 76133
11.0 28 Blue (B1-T56 ) [1 01.80 64.9] 48234 -22234 181804 76133

[code].....

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Delete Last Line In A RichTextBox In .NET?

Apr 1, 2012

I've been search and I can't found an answer that works, I need to remove (delete) the last line in a RichTextBox1 in vb .net, I mean remove last line and 'breakline' too, but only the last, no others,

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Delete Line 1 From Listbox?

Feb 23, 2009

how can i delete line 1 from listbox?

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Delete Line After Sending It

Mar 16, 2009

ok i have a textbox that look's like this [code]say my code grab's the word EON & ERN & HEN and send's it to 1 of my textbox's/i need those deleted so they cant be sent again to my textbox.[code]

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