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]...
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.
View 2 RepliesPrivate 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.
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]....
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]...
I'm working with a structure array but I don't know how to delete a specific position...
View 8 RepliesAssuming I have a folder structure like:
[Code]...
This works fine, unless I have Windows Explorer open and I'm looking at the 'MySubFolder' directory. Then I get an IOException The directory is not empty. - clicking OK dismisses this and then the folder structure is not deleted. Any thoughts on how I can get this to perform correctly (i.e. delete), even when running this code while having the folder struture open in Windows Explorer?
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].....
i need to add background image of panel at certain location on panel.First of fall is it possible
View 5 RepliesHow do I set the caret position in a System.Windows.Forms RichTextBox? ScrollToCaret in not Working. Here are my Registry settings. When I save to the registry, It saves. When I try to get were I left off from the previous read, It leaves me at the beginning of the file and not where I left off. [Code]
View 2 RepliesI have a picture box with a label underneath it. The text of that label changes based on events. The problem I have, is when the text changes the label is no longer centered underneath my picture box.
View 5 RepliesI have written following code in vb.net to delete the file.[code]...
This code works perfectly in windows xp. But in Windows 7,I can not delete it. This OS is hectic OS from developer's point of view. Some or other problem occurs and Microsoft has not considered the developer while building this OS.
How do I delete file in Windows 7 ?
I have looking for a tutorial or class that demonstrates more than a trivial example of saving a windows position on closing. The ones I have found don't seem to work on all systems because of:
1. Multiple monitors. (and resolution between those monitors)
2. Toolbar size and position (toolbar is only on the primary monitor, well sometimes)
3. Sometimes the programs dont open on the right monitor they were closed on.
Is there an extensive class or tutorial on all the stuff a programmer needs to get right to have a window size and position persisted between executions?
I am using the following code to populate data in Textbox1:
[Code]...
I have few functions assigned in TextBox1_TextChanged event. The problem i am facing is this event is fired twice, once after the Fill command and another after the Position command whereas i want the event to fire only once after the Position command. What should i do?
I have developed an VB application for windows. The application creates a folder say "C:My_Folder", when I run the application. I want to delete that folder when I uninstall my application(through control panel > uninstall ).
View 1 RepliesIDE: Visual Studio 2010
Library: .Net framework 4
Language: Visual Basic .Net
Type application: Windows form
Code:
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.PictureBox1.Image = Image.FromFile("C:UsersDimaPicturesvisualwebripper - Copy.png")
Dim InstImageList As New ImageList
[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 need to delete a folder whit all files without sending them to the bin how can I achieve this?
View 5 Repliesin windows form in button click event how to export the file in a location select by showdialog & it will be delete permanently at a same time.How can i do this because in .net it will produces error "IO Exception was unhandled" or "The process can not access the file because it is used by anather process." .In button click event how to export the file & delete at same time in vb.net windows application.
View 5 RepliesI am creating a windows service to save current username and logon time in a CSV file. But when I install the service, the file is just created, not details are written to it, and that file is set to read-only mode. what is the problem in my code?
My code:
Imports System.IO
Imports System.Text
[code].....
how can any windows xp program delete folder application in visual basic .net 2008?
View 1 RepliesI created a VB Windows service with a FileSystemWatcher (VS 2005). When someone places an XML file into a folder, I want the service to read it, then move it to another folder. I do the move with this type of command:
[Code]...
how can i stop ctrl alt delete f4 windows task manager in my application
View 6 Repliesin windows form in button click event how to export the file in a location select by showdialog & it will be delete permanently at a same time.How can i do this! because in .net it will produces error "IO Exception was unhandled" or "The process can not access the file because it is used by anather process." .In button click event how to export the file & delete at same time in vb.net windows application.
View 1 RepliesI also have a function that returns ALL tiles on the map and they're X, Y position. How could I find out which one is closest to the position I specify? I can't figure out how to go about it. how to implement it with this. Heres a MADE UP example if what I'm trying to do:
Dim MyPosition as New Position()
MyPosition.X = 400
MyPosition.Y = 400
Dim tList as New List(Of Tile) = MyMap.GetTiles
Now, I can already do the stuff above, but what I need to make is something like this:
tList.GetTileClosestToPosition(MyPosition)
I want to set control position relative to other control so when i make one control hide then other control move up like this.
View 1 Repliesi 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 have a javascript file that contains the function for calling the confirmation delete window, the code used is similar to the following:
function Delete()
{
confirm('Delete this user');
[code].....
I have a datagrid being filled by the data adapater connected to my database.I have a delete button on the form, i cant figure out how to delete the selected row on the datagrid when the delete button is clicked.
View 1 RepliesI'd like to create code for my datagrid view to be able to delete a row by first clicking the record selector column then pressing delete. Seems like some standard stuff but really difficult to create in VB 2005.
View 10 Replies
