VS 2008 Deleting Multiple Lines In A Text File?
Sep 20, 2009
I need to be able to search through a text file and find a line of text, then delete that line and the 7 previous lines and also the line following the searched line. Basically the program creates student records to a text file and asks if the user wants to mark the record for deletion then when the user exits the program, I want it to find the records mark for deletion and delete them.The records in the text file look like this:
Name: Some, Students, Name
Age: 20
Phone Number: (555) 555-5555
[code]....
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Jul 9, 2009
Sorry if this seems like I haven't searched, however I have. Maybe I'm not understanding something or maybe I just haven't found what I need. Anyway my question is this. How would I find multiple strings in a text file and replace them? So far I've been able to find out how to replace a single string with:
[Code]...
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Dec 16, 2011
I have the following code to read a csv file and copy each line to another file as long as it does not contain certain strings, it seems to work a little but it leaves some lines in it shouldn't, and it's also taking lines out it shouldn't as if I keep running it again on each output file it eventually takes everything out!
Private Sub Strip_File()
Microsoft.VisualBasic.FileOpen(1, tFile.Text, OpenMode.Input, OpenAccess.Read)
Microsoft.VisualBasic.FileOpen(2, "C:AcmeIPPMaster.csv", OpenMode.Append, OpenAccess.ReadWrite)
[Code]....
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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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Jan 28, 2010
Ok, I'm new so go easy on me. I don't know if this is in the right section, so if it's not, sorry.
Goal: To delete extra lines in a text file.
[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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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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Feb 26, 2009
I have a *.txt file which contains instructions and data, with its own comments (preceded by ! ), blank lines, and each instruction begining on a new line, but occassionally using two lines. Each instruction consists of several feilds seperated by a TAB. Finally each instruction ends in a comma. Only a few different instructions are there (10 different ones) but there are many of each. Spanning a good 2500 lines. Comments and blank lines are obviously of no interest to me. I merely need to read the instructions and the data that follows it.
Now, I have successfully used 'System.IO.StreamReader.ReadLine' to go through it line by line, picking out lines begining with certain strings (first 3 characters of a known instruction). All good, I can 'lift' out the lines of interest and store them, for them to be split up later (seperating their fields into instruction, data, etc..) and then into an array.
The problem is, since some of the data fields in these instructions are so long, it spans two lines, before it ends with a comma. Using the above method, I end up with two array entries for a single instruction, since I have stored individual lines rather than a complete instruction. The only similar situation I can tihnk of to explain this, is to pick out sentences in text, and store each one in a string. Of course these end with a period (full stop) but span two or more lines.
I am hesitant to post an example, since its formatting is rather strange, but it is generated that way from 3rd party software, so I cannot change that for my software application.Perhaps there is no 'graceful' way of doing this, meaning I would have to find a way of 'adding' the second line of the instruction, to the string of the first line. Or perhaps reading each line character by character, literally storing every number/letter until I reach a comma.
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Sep 3, 2009
how to count the lines in textbox1.text (with multiplelines). I don't need to count each character. I only need to count each line from top to bottom in textbox1.text (multiplelines) and I will use Label1 to display the numbers.
example:
1-pauljaones
2-tommyperrry
3-marktoms
4-Jonessmith
5-paulwhite
Obviously this is 5 lines and that's what I need to count.
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Apr 7, 2010
If I have a multi-line textbox like this:
Line 1
Line 1
Line 1
Line 2
Line 2
[Code]...
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Jun 12, 2011
ine 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:
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Jan 20, 2012
I would like to read a txt file and then check if the same name exist within its sublevel.If found within the sublevel, delte those line.sample txt file:
4272840.ASM M97 BLOC DE CLIMATISATION DENZO VERSION A/C AUTOMATIQUE AUTOMATIC A/C VERSION AIR CONDITIONING BLOCK DENZO F9206101
3786687.ASM M1 -- BLOC CLIM AUTO
[code].....
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Dec 27, 2009
How to make program that counts lines in a text file?
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Dec 27, 2009
remove line from text file?
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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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Oct 1, 2009
I have a text file that I'm reading into a listbox. I want to skip a line if it's blank. The following code works if I leave out the check for the line being blank. It puts the file in the listbox with no errors. However, when I include the If statement that checks for the line being blank, I get an ArgumentNullException in the Items.Add line when It gets to the end of the file.
'Read Multiline File
Dim FILE_NAME As String = "C: empliz-etsy.txt"
'
If System.IO.File.Exists(FILE_NAME) = True Then
[Code].....
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Aug 15, 2010
I am in the process (slow process) if learning vb.net by trying to create a simple application that will read and write (save) chosen information to a text file. The application has text boxes (name, email address, etc) and I want to read information from certain lines in the text and place in the given text box.[code]When I start debugging mode it does not display the text until I click onto the text box and it's displaying the first line of text in the file. How do I skip the first line of text and have it display the second line (or the 6th, 24, or whatever line I need to be displayed)?Then I can start working on learning to use streamwriter
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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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Feb 25, 2011
I'm creating a button on my project that when clicked it will enter the information in the comment "" area and store it into the clipboard to be pasted.
My issue is whenever I try to put the multiple lines in the comment field I get a syntax issue.[code]....
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Jan 22, 2010
Tab control that has multiple lines of text
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Oct 2, 2010
In previous versions of VB, you could click on a label to gain the focus, and then type multiple of lines of text. In VB 2008, clicking on the control does not open up the control for editing. You can use the text property, but can only enter a continuous string of characters. How do you insert blank lines between paragraphs?
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Dec 2, 2011
I'm having difficulty with an assignment for my class. I need to have certain images show up depending on which text is input in the text box. This is the code I have, but I can't figure out how to get it to work properly.
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSales.TextChanged
txtSales.Text = "Devin Thomas"
PictureBox1.Image = System.Drawing.Image.FromFile _
[code]....
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Apr 15, 2011
here is the code i am using to read from a rich textbox:
Dim mydir = my.computer.filesystem.currentdirectory
IO.Path.GetFileName(mydir + "
ecord" + tb_name.Text + ".txt" )
Dim linebuffer() As String = IO.file.ReadAllLines(mydir + "
ecord" + tb_name.Text + ".txt")
casefiles.rb_casefile.Text = linebuffer(0).Trim(""""c)
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Dec 29, 2009
I have a listview, it's view is Details and it has gridlines, in that listview, I am including addresses with multiple lines (ie.):
John Doe
123 Street Dr.
City, State, 123456
and would like for it to display that way, instead of:
John Doe123 Street Dr.City, State, 123456
I'm sure this is something simple, but I just can't figure this out.
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Dec 11, 2011
I was developing a antimalware, and wanted to read Signature from a Signature.txt file, and place all the strings into different textboxes, my viruslist has 90069500 malware (Took Almost A Year Collecting Them) signatures and if I start typing then like:
If buff.ToString = "000008298FC27014ECF5610F163277E2" Then
txtvirname.Text = "Trojan-GameThief.Win32.OnLineGames.tvl"
txtrisk.Text = "Moderate"
[code].....
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May 27, 2009
how to permanently save to text files then re-open all of the information again using SFD and OFD. Now my teacher has come back at me and said that i need to be able to save the information from multiple text boxes and have the text in certain labels to also be saved into the one text file (the labels need to be done because it is a database and these labels are like the fields and the right text box needs to match the right label)
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Nov 24, 2009
I have a form with a treeview and a listview. The treeview lists the folders on your system and listview shows the files in the selected folder, similar to windows explorer. I have a delete button for deleting files.
[code]...
When deleting multiple files a confirmation message box pops up for each file selected. I would like to have it come up once and ask 'Are you sure you want to send these 'x' files to the recycle bin?' where 'x' is the number of files selected.
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Apr 15, 2009
I know how to write one line to a text file and read one line from a .txt file. How do you write multiple lines to one .txt file?
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May 6, 2012
I know how to use the default buttons item, but is there any way to achieve the style of multiline buttons (or maybe rather, "clickable text"?) like shown below?
The situation is that I have an interface for the user to select what kind of file he wishes to establish, and there has to be a brief description under the larger, main line of text.
I'm only planning to run this on Windows 7, so I don't need to worry about backwards compatibility with older versions of Windows
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