Delete A Line In Text File That Ends With A Certain String?
Jul 9, 2009Deleting a line from a text file. This is for an ASP.net Webpage. I will have a file called Sources.txt. Example data of this file looks like this[cde]...
View 8 RepliesDeleting a line from a text file. This is for an ASP.net Webpage. I will have a file called Sources.txt. Example data of this file looks like this[cde]...
View 8 Repliesine from a text file. This is for an ASP.net Webpage. I will have a file called ources.txt. Example data of this file looks like this:
View 3 RepliesGoing from VB6 to VB10 I find VB10 has much easier ways of doing things, like getting command line arguments, getting all subfolders, etc, the hardest part is knowing what commands to use. Is there a better way to detect if a string ends with certain text? I'm doing it like this....
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I am working on a program with a list box that displays text from a selected text file. I have already made it to delete the item from the listbox but I don't know how to get it to delete that same line from the text file so it doesn't just display it again when you reopen the dialog. Any help? I am using streamwriter and streamreader.
View 2 RepliesI have a routine that will check a text file for a line to be deleted and deletes it when found. Now the problem i have found is that the lines can be slightly different depending on what the user has done. Now in the TXTSETUP.SIF which is a file in the Windows Source you have the following lines FIG 1. FIG 1: It may look like this: ascent.jpg = 1,,,,,,,,3,3autumn.jpg = 1,,,,,,,,3,3
View 1 Repliesi 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 ,
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I am writing a program that manipulates text file using console application. What I want to do is to delete 1 specific line based on the ID entered by the user.[code]My program should delete the line with the ID DR-02, but my program deletes items from DR-02 to DR-04 instead of DR-02 only.[code]
View 3 RepliesI have a text file which is about 700MB it is very difficult to open this file but there are 5800 Chapters in the file every chapter is starting from "$$NEW$$" For example [code]I want to split the text file after every chapter ends any idea ?
View 3 RepliesI am trying to delete the last line of a text file, then append new text to the end - The problem I have is that the code I have is set up to search for an Index, not a String, or the EOF line - I tried to modify it to search for the end string in the file, but that didn't work, either - Here's what I have:
'Delete last line
Dim lines As New List(Of String)(IO.File.ReadAllLines(LocalAppData & "settings.txt"))
'Remove the line to delete, e.g.
[code].....
I use the following command to save my textbox strings to the file:
Sub SaveToolStripMenuItemClick(sender As Object, e As EventArgs)
FileOpen(1,"test.TXT", OpenMode.Output) ' Open file for output.
WriteLine(1, textBox_name.Text) ' Print text to file.
WriteLine(1, textBox_middlename.Text)
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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.
i want to get the line number of a text file that contains a particular string data.
1. using the string data like str="book"
2. find if the string is part of the file
3. get the line numbers of where it occurs.
eg
filename=sample.txt
sample.txt contains
dance
book
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I would like to know how to read from text file that have a line with string A and ignore lines with string B.
View 7 Repliestell me where what is the code for "Delete a line from text file" command?or a website to look for it?Searched the delete line but i only got VB6 Code.
View 5 RepliesI would like to read an HTML file, search each line to see if it starts with </head>. Then add the centering code after it. That line at destination file should read:
</head><table border="0" cellpadding="0" cellspacing="2" width="760"align="center"><tr><td>
After this I don't care to search for anything. Just read from source and write to destination. I know there are programs out there to find/replace text in series of files but I am not allowed to use external programs.
I've been looking through the FCL for a method that will allow me to erase a line of text from a text file and replace it with another line of text. Neither the StreamReader nor StreamWriter have a method for replacing or removing Text from a text file, as does the string object. Are there any available methods for erasing just certain lines of text from a file, and then replacing them with others?
In my code, I'd like to locate a certain line in the text file, and then at that point in the text file, use a For...Next Loop to replace each successive line of the text file with new text:
Dim user_data_file As String = "user_data.txt"
edit_input = New StreamReader(user_data_file)
Dim edit_line As String = edit_input.ReadLine
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However, I can't find any methods that will allow me to do this.
I'm reading in an xml file, which is working fine with no problems, but I want to re-format one of the elements data attributes slightly.
The XML attribute output is currently Wind: NW at 6 mph
What I want to do is extract just the number from the string, I figured an easy way would be to simply play with the length of the string and assign it to another variable.
However, I've ran into a little problem.
I can use windRtrim = wind.Substring(0, wind.Length - 4) (Where windRtrim is the amended string variable and wind is the string from above)
This returns Wind: NW at 6
Which is great, but the problem now is trimming the correct number of characters from the beginning of the string as it'll be different if the number were to go over 9 (ie. 10 and above)
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.
View 8 RepliesI am trying to figure out a way to delete something inside a text file but keep everything around it.[code]....
View 4 RepliesI'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
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i have a listbox that lists the contents of a .txt file, How can i make it so that when i click a button it will delete the selected line from the listbox from the file?
View 3 RepliesI'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
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I am a beginner at this and I am taking classes, however I am having trouble deleting a line from a Comma Delimited .txt file.[code]...
View 8 RepliesI like search a file TXT with this contains:
Name "Paul"
Age "11"
City "Chicago"
my question is: Its possible get a string "Name" and give me the value "Paul"? I have this function for get strings:
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I need to read a xls/xlsx/ods/txt file line by line,to get a column name of file .how to read a file line by line in vb.net?
View 1 Repliesi would like to store contents from a text file line by line to arrays before copying them to another text file. what i have is currently like this:
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Currently I'm only able to store the whole content into one variable, would like to store the content line by line in arrays.
I have a text file as follows:for example:
apple:1 southafrica:34
5.00
orange:2 southafrica:23
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I have the first part done, ... I can delete all the text before spacific text, ... now I need to delete all text after a spacific point in a string of text.
I'm making a better, and more simpler BandWidth Monitor, and I'm extracting the Bytes Recieved, ... but just the value, and leaving out all the rest of the text.
here ya go, check it out.
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
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I have to create a new program that reads to Text files. These text files are in the form of a report (with column headings). The purpose is to compare each record line by line to see if their have been any changes made. The record is based on an Account#. Over time these files will be considerably large. What is the best way to do compare records from each file. I'm thinking loading each file into an array and processing them that way.
View 7 RepliesBasically, 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