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:
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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
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I am trying to do this but it doesn't work:
VB
Dim str As String = "07" & GetBetween("Stephen 0761234567", "07", vbNewLine)Dim op As String = "lol" TextBox1.Text.Replace(str, op)
GetBetween is just a function to match something between something else. That works fine, the string (str) sets as 0761234567 just like I want but when i try to replace the text it doesn't work.
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View 2 RepliesI'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
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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.
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.
I'm reading a text file that has ZPL language for sending strings to a Zebra printer. Each line has one parameter that is replaced with a value. However, the line posted below has multiple parameters that need to be replaced with values.
'''''Line from text file
^FO005,005^A0R,035,025^FD(01)90723236{strLabelNumber}{intCheckDigit}(3201){strNetWeight}(11){strProductionDate}(21){strOrg}{strBoxNumber}^FS
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I can replace one parameter with one value using string.replace, but how would I continue to process the rest of the string? Would I replace the first parameter then reevaluate the string again to find another parameter until no more parameters are found?
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
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How to make program that counts lines in a text file?
View 4 Repliesremove line from text file?
View 6 RepliesI 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
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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.
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.
View 16 RepliesFile I/O and Registry :: replacing single filename in multiple directories and subdirectories
View 5 RepliesI 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
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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
View 6 Repliestxt1 = help and txt2 = me! txt3 = not here, when i enter the other box i want the okay to drop sign to come up, after drop txt1=me! and txt2 = help.if i drag to txt3 display the can't drop sign.Iv'e tried everything all i can do is replace one way.also,i want the can't drop and can drop simbols to show.so far
Public
Class Form1
Private
Sub tbMouseDown(ByVal
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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.
View 4 RepliesI'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]....
Tab control that has multiple lines of text
View 2 RepliesWhat I basically have is a small game which I want to count wins/loss/ties. I have no problem with the game aspect but need to know how I can replace a string in a csv file. IE: If Jim wins the game, his 5 needs to be turned to a 6. After googling quite a while I came across the replace() function, but it doesn't actually rewrite it back to the text file
Contents of users.txt:
Jim,1.jpg,5,1,0
Will,2.jpg,6,7,0
Tom,3.jpg,5,5,0
Snippet of
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The issue I have, is if I try to use any sort of IO function after this (WriteAllLines, streamwriter, etc) - I get a process is being used and can't touch the file (because its being read).Must I somehow create a new file with a copy of everything including the replaced string?
I am using the following code, but cannot get this to work. I have got it to work if the replacement is just of one word. So if the word test is replaced by mouse and the only thing in the file is the word test, it works.
How can I replace like this:
CH_IPVOD_filename.mpg > replace the CH_IPVOD_ with nothing for the result of:
filename.mpg
?
I would like to replace every instance of ch_ipvod_ with nothing.
Public Class Form4
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim fso, inputFile, outputFile
Dim str As String
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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?
View 3 RepliesI'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 _
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I am in desperate need of code that will allow me to search through a text file (.txt) and change the word "POLAR" to a string with a particular value, for examples sake lets say the string = "SUN"
View 1 Replieshere 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)
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.
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"
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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)
View 39 RepliesI am trying to replace a string which is actually different from line to line in a text file. I want to end up with a filename but without the path. For example:
My text file contains:
C: est estingmorefilename.mpg
C: est estfiles1 estfile4.mpg
W: estinglocation estingmore estfiles9.mpg
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