I want to know how to delete last text line of text file..Most that I found in the internet is delete last line of text file which is blank line in the text file. I want to delete last text in the text file. Here is my code, but this code is use to delete specific text in text file. How to modify this code?[code...]
View 12 RepliesI know this has been asked like a million times, but I cannot seem to find a solution that works for me. I have a text file..and lets say its named Test.txt.I have like a list of stuff in the file and I have a Remove button. I also have a listbox that has the contents in the Test.txt file listed on the form_load. So basically to try to explain this better..what I want is to delete the line that is selected in the listbox when I click the remove button. Let me explain in an example.The Test.txt has the same contents as the Listbox..so say my list is like this:
Hi
How
Are
You
If I have Hi as my Listbox.SelectedItem then I would like to remove that line from the Test.txt. I tried to load the contents of the file in a TextBox too and I can search and find the text in the textbox and focus on it and highlight it but I cannot delete it from there too.
if i have 4 lines in a text box and i only want to add new text to line 3, how can i do so..i would like it to delete previous text and/or overwrite it.
View 2 RepliesI want to create a file removal which revieve directory files to delete from a text file..[code]
View 2 RepliesBelow is my code for DELETE button. What i want is if the user select the transaction from the listview and press the DELETE button it must be able to delete the transaction from listview and text file(temporary log file) which i keep all the transaction record. At the same time the list view must able show the total current balance from the deleted trnsaction.
[Code]...
How can be find out which file is going to delete when, user provides command like DELETE or SHIFT + DELETE or by programmatically gives DELETE command. Well I know about FileSystemWatcher Class, but this class doesn't provide information before delete...
View 1 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].....
Trying to write to a text file using GetAsyncKeyState in user32, the only issue that I am having is when I press the backspace I get the ansi code character, but this is not what I want. I want it to really backspace, I know its doing this since that is how I coded it.
Here is my code
For BKey = 8 To 8 'THIS SETS THE BACKSPACE
CountKeys = 0 ' Seting the key code back to 0
CountKeys = GetAsyncKeyState(BKey)
If CountKeys = -32767 Then
[Code]...
I have a project where you type something then it looks through a text file for what you typed. I would then like to make a way to edit the text file once I find what I'm looking for. So, how do you delete text from a .txt file that you are searching through? Also, how do you re-write in that place you just deleted the text from?
View 3 RepliesI have a gridview that contains value of every rows read from a text file. What I want to do is, edit and delete the selected row on the gridview. I already have the code to show every row on the textfile:
[code]...
What I am going to ask is, how do I get the index of selected row return and fill the value to the textbox then update it to the textfile?
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 ran into a problem trying to delete certain text files. 99% of the time everything works fine but every once in a while I get a problem trying to delete certain text files. The exception thrown has a lot to say so here's a screen shot of it. :
Attachment 77319
Here's the code I use to delete the text files.
If File.Exists(StringForTextFile) = True Then
Try
My.Computer.FileSystem.DeleteFile(StringForTextFile)
Catch ex As Exception
[Code] .....
I was thinking that maybe if you tried to send the file to the recycle bin it would always allow that. What would the correct code for :
My.Computer.FileSystem.SendFileToRecycleBin(StringForTextFile)
I 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 Repliesremove line from text file?
View 6 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 Repliesi 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)
I'm going nuts with this. Obviously I cannot open the reader ard writer on the same file simultaneously.
[Code]...
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).
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]...
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 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 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 RepliesHow To Properly Delete A File Using File.Delete()
View 5 RepliesI have a text file as follows:for example:
apple:1 southafrica:34
5.00
orange:2 southafrica:23
[code].....
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
[Code]....
I have one combobox, two buttons (Add and View) and listbox. When I click button Add text from combobox is added to text file. This is code for Add button:
[Code]...
i am working on an application called logonscreenchangerxp i made my program and when i run it on xp virtualmachine i get errors the program is made using vb 2008 and using .net framework 2.0 i am not able to get full permissions to modify boot.ini file and a regisrty value and to delete a file
View 5 Repliesi am very new to VB. I am working on file operation such as show files, copy file, delete file, show current directory, rename folder, make folder. My problem right now is with delete and copy file. I have a method of delete and copy but i dont know how to pass this method on a button.
[Code]...
I am trying to code a delete button for a browsing program based on data from a txt file. I have coded the buttons to sort(ascending and descending), append to the text file, search the text file, but I can not seem to get the delete function working. I am using VB 2010, this is what I have so far:
Code:
Dim deleline As String
Dim line As String
Dim isFound As Boolean = False
sr4 = IO.File.OpenText("Students.txt")
[code]....
[VB 2008 express edition] i am doing a application data grid view bound data from MS access (.mdb) as my dataset. the dataset have 5 tables, each table consist of ID, Items, Rates, And Amount, i face some problem here:
a) cannot delete row from the table, (using binding navigator but error)
b) how can make a opendialog to load the .mdb file dataset table in to the datagridview?
c) how do i save table in the datagridview into the MS Access file ?