Move File Pointer Before Beginning Of File
Feb 25, 2012[code] An attempt was made to move the file pointer before the beginning of the file.
View 1 Replies[code] An attempt was made to move the file pointer before the beginning of the file.
View 1 RepliesIs it possilbe to use a file pointer to go directly to specific place in a file
using vb.net streamreader
e.g. using streamwriter
fred
john
pete
dave
jim
I want to point to fifth item ie 'dave'
I'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
[Code].....
I have an VB.NET app that writes the status to a log file in text format. Over time, the file is getting large and I wanted to know if there is an efficient way to truncate the beginning of the file.
To make things easier, I am looking to specify a file size (say 2-3 mb) and I am writing the log using a StreamWriter:
Using strm As New IO.StreamWriter(filelocation.log, True)
strm.WriteLine("msg to write")
strm.Close()
End Using
I thought about using the strm.BaseStream.Length to determine how much of the file to cut off, but by using the .SetLength it would cut from the end - not the desired result.
Im trying to create a new file at the begining of each month, and stay active for the rest of the month by adding the textbox info to it every time someone presses the Next or Exit button. Next and Exit button update the files Im not sure would it be easier to get the info across to Excel or sql server, but i woudlnt know how to do that, if that would be easiers.Aim of the what im doing, person logs button presses with the text files logging the number of presses of each of the buttons. then at the end of the session or when the user moves to the next item to be logged the files then save the counted section. need to it log everything for the month. Just trying to get the info into sqlserver 2008 as im logging each job as well.
If Me.DateTimePicker1.Text = "# october 2009" Then
' logging the monthly total
Using SW As New System.IO.StreamWriter(faultsfile)
SW.WriteLine(TextBox10.Text)
[code]....
I have a file in vb.net that i am using to read records. In the code behind my next button i read the next record in the file.How do i return to the beginning of the file when it reaches the end?Here is my code.
Dim sr As IO.StreamReader = IO.File.OpenText("CorkSouth.txt")
Private Sub Display()
If sr.EndOfStream = True Then
[code]....
I'm trying to move the mouse pointer to a certain position on the screen.I've done the declarations for both the SetCursorPos as well as the mouse_event, however I keep getting a Declaration expected error at this line: SetCursorPos(x,y),Perhaps something is wrong with the project or vb as well, cause I used an other declaration as well and when I wanted to use that I also got a Declaration expected error.[code]....
View 2 RepliesI wanna make a control of round shaped with a pointer on that which I can move around. In my program I have volume control. Now, I am using track bar to control the volume. But, customer is asking some nice control rounded shaped with a pointer which will move around the control. How can I do this?
View 11 RepliesIs there a code in which the software scans the screen and point a specified color out of that scan and mark it.
View 1 RepliesI want a SplashScreen to appear at the beginning of my program and plays a shockwave .swf file automatically without loop, then closes he splashscreen.i want this ALL to happen on load on SplashScreen, i dont want to click a button and search my computer for a flash file. I want my flash to be in my program like so...
i get some "cross-thread" error What do i need for my .swf to run automatically on load? Also woundering if this is the right way to say the file location when the file is located in my solution explorer?
Pressing a Hotkey, I want to click the button of another application (a game table), knowing it x and y coordinates, without to move on the screen then mouse pointer, because this generate an annoyng fluttering.atm I use mouse_event, that works fine, but with the fluttering..In you opinion is this job is possible with a direct Api? I tried to hide the mouse with ShowCursor(False), but it works only over my forms, not over the screen...
View 2 RepliesTrying to move from an Access MDB file to an SQLExpress(2005) MDF file and getting lots of problems. I have model my MDF file Like my Access MDB file ,same file name,same number of columns, same columns property,same columns name, see out of the 13 columns 8 have default value, I think I am getting a syntax problem when inserting the data into the table, being new to SQL Express I don't know how to write the proper SQl syntax
See my code for inserting and updating (using Access.mdb) which I whoud like transpose to SQL
'// Insert a record into the database for the node.
sSql = "INSERT INTO [TreeViewItems] (bRoot, dLastModified, iImageIndex," & _
"iParentID, iSelectedImageIndex, iSort, sName, sFullName) VALUES " & _
[CODE]...
Im am writing a simple console app that will check and see that a file exists and then if does it will copy the file and move/paste the file into a new location. The file I'm checking exists as a file share on a server and I am wanting to move the file to a folder on a local machines C drive.
I'm working from my machine which is on the domain where the file exists and I'm logged in and have full admin rights on the domain. I can access the file share but when I run my app it gives an error saying access to to the file path is denied. My question is even if I'm on the network do I still need to provide username and password credentials to make this connection? If so how do I do this?
[Code]...
Ideally I'd like to be able to copy/move between an accessible folder on my local drive and a network share that I don't have permission to access (but the application would). I am using impersonation to give me access to the files in the network share but using System.IO File.Move or File.Copy forces me to use the same credentials for each location. Is there a way around this?
View 2 RepliesI want to know if it's possible to move a file from the file system into my applications resources.And if so, how?
View 6 RepliesWhen I rename the file, what happens is that both files stay there, but the renamed file is 0KB and the original that is still there is 14KB[code]...
View 9 RepliesI'm Writing a Problem that will allow users to move data from one Data file to the next, using a Text file. My problem is that i so far i 3 test users.
No matter what test user is logged on it seems to be Reading the first user info no matter which one is on.
How do i get it to Only Read the User Info and show it up on text file that is Currently logged on.
Code:
Imports System.IO
Public Class TestForm6
Inherits System.Windows.Forms.Form
[Code].....
Can I safely move ReferencePath information from a .vbproj.user (or .csproj.user) file into the corresponding project file? Note: All developers will be using developing from the same location on their machines.We'd like to allow users to maintain their own settings for other things, but have this basic info be setup once and checked into source control to be shared to all.
View 1 RepliesI am putting together a simple app and I have it working for uploading, downloading, deleting files using FtpWebRequest. But I cannot find how to move a file using FtpWebRequest. What is the simplest way to move a file from one dir to another without using another external dependancy?
View 1 RepliesI am trying to move a folders(testfolder) files that is on the desktop(windows) to C:Program Files ealfolder. I have no problem finding the folder it is to be placed into. But i cannot seem to find the desktop directory.I named the folder on the desktop testfolder. I cannot seem to find the correct directory for desktop anywhere.I tried a fair few and keep getting this result when i press the button: Could not find directory '%userprofile%Desktopest'.
Heres the code i am using:
[code]My.Computer.FileSystem.MoveDirectory("%userprofile%Desktop estfolder", _
"C:PROGRA~1
ealfolder")[/code]
I've added a needed feature to my program where the user will move their completed forms to the network drive. Currently the program finds all associated files in the source directory and then moves them, but I was wondering if there is a way to move only selected files or multiple files at a given time. Using VS 2010, I've looked at the open and save file dialog boxes, but open only lets me select one file at a time while the save dialog box does not let me move them. Just wondering of some ideas/suggestions for this.
View 1 Repliesserver windows 2003 R2. in a domain environment. i like to move files to and from server using a windows application (vb.net) can anyone give me a tutorial on this
View 1 RepliesOn an error (thrown exception), the file being processed should be moved to the folder for files with errors (app.config setting).
The problem: The only way that I can of handling this is to have a nested Try/Catch inside of the main Try/Catch to try to move the file, that way if the move fails, another exception is thrown. I know that I can do my best to make sure the directory exists, rights are given, but since it is a network drive... I just know an error is bound to happen at some point.
Example
Try
(Do Some Logic, but an error happens)
Catch ex As Exception
Try
[Code]....
Actually that came out even more horrible than what I was thinking it would look like.
How should I really be trying to handle a possible error occuring in the catch, so that I can still move files and try to call my event?
VS 2008 Move file to recycle bin
View 6 RepliesI want to move a file, when it is created. I have filewatcher and I know filemove function, but I don't know how I can create condition, that the file will be moved, when it is create. [Code]
View 4 RepliesI have a program that manipulates some files every night. The problem is it does not run on all the files all the time because someone leaves them open and forgets about it. So I then have to go in and manually force these files to close. Anyways I can do this in vb.net? Force a file to close, or delete a file thats already in use?
View 2 RepliesI have a text that has a question followed by four possible answers. At the start, it loads up line 1 of the text file and puts the sentence fragments into their proper place (text.split is being used). I want to be able to have a click button event that then reads the second line and replaces the first line's sentence with its own. Click the button again, it goes to the third line.
This is what I've created. It reads the first line (But honestly, I think it reads the entire thing and the first line is the only thing that can fit in the selected spots). It then splits the first line into fragments, moving them to certain areas of the form. Question goes to the Question label, answers go to the selected button.
HTML
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim readText As String = ("C: est.txt")
Dim textParser As New TextBox
[Code]....
So, like I said, what would make it possible for me to create a button event that when I click on it, it moves to the next line in the txt file?
I need a code that when you click on a button a file in the c:// drive will be moved into a folder into the C:/something/ drive?
View 1 RepliesCopy or move .exe file when it runs
View 2 RepliesHow to unzip and zip? i need to move file around inside of zip files really any help?
View 8 Replies