Write & Close & Reopen & Read Files

Jul 3, 2010

This question only applies to files of line-terminated/text strings.[code]I suspect that ultimately, I will generate the myfiles version of the HD file as I write it to disk,but at this point in my VB.net 'skills', until I can prove what I've written by reading it back and having control of it in my program, I can't assume anything about the data/format/file that I have written.


Forms :: Close And Reopen Child Form Within Parent?

Dec 22, 2010

When my application first loads the parent opens and I select my child form from toolstrip:

'In parent open the form when option is clicked
Public Sub Showfrmitemreview(ByVal sender As Object, ByVal e As EventArgs) Handles itemreivewStripMenuItemA.Click, itemreviewStripMenuItemB.Click


Nothing happens I don't even get an error message. I've played around with the code numerous times and the only thing that worked was to have it open outside of the parent which I do not want to happen.

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Form With Button To Close Process And Reopen Be Always On Top And Open In Specific Location?

Aug 17, 2011

I've created a very simple form with one button on.  I need it so when the form runs, it opens in the bottom right hand corner of the screen regardless of the resolution.  It also needs to be always on top of all other applications.

When the buttons pressed, i need it to close all iexplore instances and reopen a fresh instance.

I've tried to search for the answer but to no avail.

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Open / Close / Read / Write A Regular Disk File

Nov 18, 2011

I am using Visual Basic 2010 Express and attempting to get information on how to Open, Close, Read and Write a disk file in Windows using VB. I have attempted to use help on the home page of Visual Basic 2010 Express with no results. It does not give me any instruction or sample.

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Write - Save - Read .txt Files (or Html Files)

Mar 14, 2011

I want to develop an application which can Write, Save, Read text files(or html files) What I want the application to do is. When I open my application I can write stuffs and then it will save it to my hosting/server. Then, the application will read the text which I already save.. So far, I can only make the application read it by using WebBrowser control and navigating it to a specified URL. Example: [URL](or message.txt) Which I modified from the website not from the application. I want to modify the text or html files from my application.

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How To Read & Write CSV Files Using WPF

Sep 21, 2009

i'm using sharpdevelop to program WPF application(I'm newbie to WPF i've knowledge of VB only and no C#, is it necessary to learn C# to know WPF ?).

and i want to read CSV file first. after that i want to modify and save file. any suggestions and pointers for this ?

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Read / Write XML Files?

Nov 9, 2010

I have the following code for reading XML files.[code]...

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Read And Write Files?

Jan 27, 2010

reading and writing files. Let's say I have a text file with multiple lines that I want to be read into my visual basic program. The first line is displayed in textboxA while the rest of the lines are displayed in textboxB. How do I accomplish this? Am I able to use the peek method for textboxB but somehow tell it to skip the first line? Now textboxB is obviously a multiline textbox and I want the user to be able to type something into another textbox (textboxC), press a button, and it will be displayed in textboxA. How do I make the text in textboxC get displayed on the first line of textboxA and move all the other lines down the list?

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Write / Read 2 Or More Files?

Oct 15, 2009

in the following thread, [URL]..my first reply, writes and reads two files..

my question is, is that code used properly for writing/reading those 2 files?

for some odd reason, i feel like i am over using the writers/readers.is there a way to only use one writer/reader, not 2, as my code in that thread does, to write/read 2 or more files?

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Can Not Open / Read / Write Any Files

Aug 4, 2009

I have an application that works in both 32 and 64 bit, except that on the 64 bit system it can not open/ read/write any files.I know the 64bit file system is different, from what I heard. How can I make up for the changes? I have no access to a 64bit system, but I want to make my program able to find and open the files.

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Read And Write Amc Files In Program?

Feb 29, 2012

Reading and writing *.amc files using vb.net 2005. how to read and write *.amc files in vb.net 2005.

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Read And Write Outpook PST Files?

Dec 4, 2011

I need to wqrite an app that can read through an Outlook PST file, and write messages to another PST file based on the content.  I have never done any Office Automation, and was looking for pointers in getting started.

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Read/Write Binary Files?

Jan 30, 2012

I have this code which works well:

Public Function LoadBinaryFile(strFilename As String) As Byte()
Using fsSource As FileStream = New FileStream(strFilename, FileMode.Open, FileAccess.Read)
' Read the source file into a byte array.


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VS 2008 Read / Write INI Files?

Dec 8, 2009

How would I read/write settings to an INI file?

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Cannot Read / Write Excel 2007 Files

Jan 21, 2009

I use a code like this which perfectly works and creates MS Excel files so I can create Excel files and save my data into it.I also use a similar code to read the data, however, it only read and writes Excel 97-2003 files, and does not support Excel 2007 file format![code]...

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Cannot Read/Write Excel 2007 Files?

Feb 7, 2010

I use a code like this which perfectly works and creates MS Excel files so I can create Excel files and save my data into it.I also use a similar code to read the data, however, it only read and writes Excel 97-2003 files, and does not support Excel 2007 file format!Do you have any suggestion on this?

Dim ExcelString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + FileTextBox.Text + ";Extended Properties=Excel 8.0;"


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Display Read And Write Files To Text Box

Nov 18, 2010

I am a new to visual basic 2010 and I am creating a small game program that will have players names and keep their scores in a text file. I placed the text file in debug folder for debugging purposes. The code below has been simplified for demonstrating purposes only.


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Read/Write Binary Files Overflow?

Feb 24, 2012

Here is my code:

Public Function ReadBinaryFileLarge(strFilename As String) As Byte()
Dim position As Integer = 0
Dim bufferSize As Integer = 4096


Is this the correct way to go about this problem? If not, how should I attack it?

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SerialPort - Read / Write Files And Stuff

Oct 3, 2011

I have one project that I need help writing that I have spent months trying to write with no luck. Anyway so here is my question. I want to write a program that can display a phones filesystems that is connected to my computer by a serial port. I would like to be able to Read/Write files and stuff if possible. I have tried many ways of doing this so this is my last resort.

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VS 2005 Read / Write To Hidden Files

Feb 3, 2012

I am creating a program that uses text files to recall data and store them in a variable. My intention is to make this text file hidden so it will be harder to find and for other people to edit the data inside. I'm looking for a code that enables me to write to the file without unhiding it.

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VS 2008 Write And Read Text Files?

Jan 3, 2010

How can I make txt files and read them in VB2008? The text file does not just consist of one single line. But probably more than a single line.

How do I read the txt file and put each line in one variable.

For example, the txt file:And read it, putting each name in an array variable.

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Read And Write Files To A Shared Folder On A Network

Dec 2, 2011

All i am trying to do is read and write files to a shared folder on a network in visual basic (VS 2010). I can go to the folder through windows without a problem and without being prompted for a password. However when i try to do it through visual basic, it cant find the directory. Here is my small snippet of code that i (hope) is telling me that the program cannot connect to the folder. [code] Are there any known issues with VS 2010 that may cause this? Maybe something else in my code that could have an effect? This is in my form_load event though, so it is literally one of the first things that runs.

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VS 2005 : Read/Write Binary Files In Hex Mode?

Oct 30, 2009

i want to read/write to some files.Specifically my application searches text files but i also want it to search binary files. The problem is : how will i know when the file is binary and not text ? Also how will i get the hexademical contents of a binary file ?[URL]

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Write A Loop That Will Read Through A Number Of *.csv Files In A Folder?

Feb 21, 2010

Im trying to write a loop that will read through a number of *.csv files in a folder and then stuff the data into SQL. The code works and will happily put the data i want for a named file into SQL no problems. So when i had that working i then tried to loop it so that it would do the same for all files in the folder until all files had been done, and not error out if there where no files etc.

Maybe im tired (well, i am) or not had enough coffee but i just cant get this to work, it should be simple - i know it is infact, but its making ME feel simple.i think i should have an integer count in there, but similar examples ive seen dont use one. Also when trying to open the path i get an error at runtime "the path is not of a legal form"

Public Sub ImportCUSTCSVs()
Dim dt As New DataTable()
Dim line As String = Nothing[code].

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Declare Variable Auto Incremental And Write / Read TXT Files

Jun 6, 2011

I'm starting to write some code to run an office (not professionally). When I write the Client Class, how do I make it that the number of the client be a primary key (unique and auto incremental)? Also, I want that all the Client and Products data be stored on a txt file.

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MS VS(vb) '08 Express Include External Files For Read/write Access?

Dec 2, 2009

I am using Visual Basic 2008 Express Edition. Some of the programs I am writing make extensive use of External files (saved games,  data, item lists, etc.) I could use an easy way to get these files to ride allong during deployment (cd mostly). adding them to the resources works for some static pictures, but custom structures into lists of info to read and write from are beond that features abilities, same with the settings feature. I have found in other help referance to "MageUI.exe" so is downloading a .net SDK my solution or is there a better trick I can use?

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Will VS 2010 Express Read, Write To Random Access Files

Apr 19, 2011

I have recently decided to give .net another chance, but i have a few questions about it before i get really into it. RE: Files, I use random access files to store data as opposed to databases (namely i don't see the need for a database for storing so little information(records <200 max) knowing that it is an older system and less "cool" i don't care...) Will vs2010 express read, write to random access files? Would it be done kind of like vb6 (which is my current vb version)? I will be needing to print the text of rich text boxes, is vs2010 express capable of doing this?

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How To Read / Write To Ruby Application And Vice Versa Using Memory Mapped Files

Jul 30, 2011

We are trying to communicate between our two applications, One is in VB.Net and the other one is in ruby. We can easily communicate between two .Net applications but how to communicate between a .Net and ruby application? [code] After creating the Memory Mapped File through the above code how can we read/write it in ruby?

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Read/write To Ruby Application And Vice Versa Using Memory Mapped Files?

Aug 1, 2011

read/write from VB.Net to ruby application and vice versa using Memory Mapped Files?

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Office Automation :: Textfile To Excel - Read Two Text Files And Write In Differents Tabs

Mar 26, 2011

I am trying to read two text files and write in differents tabs.

Dim xl As Object
xl = CreateObject("Excel.Application")
xl.Visible = False
Dim i As Integer


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Reading And Writing Files On External Hard Drive, Code To Ensure SQL Or Data Read/write Execution In Case Of Periodic Drive Reconnect?

Dec 18, 2010

The drive is connected via USB and the problem I'm having is that, periodically, while my code is executing, the usb drive seems to disconnect and reconnect. (Nothing to do with the program, but the drive itself).I want to find a way to prevent these temporary drive reconnects from interrupting my code. IE, i want to insure that whatever read or write that is requested is actually executed even in the case of a temporary drive interruption.

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VS 2008 List Files In A Directory + Write The Result In A Text Files?

Dec 14, 2009

I am trying to create a program which will read the files that exist in a directory, and then write in a text file the specific information (full file name, date created)i have found several code in the site but i cant make it work, the machine i am running the code is XP and i am using VB2008.The code i have found is the following:

Imports System.IO
Imports System.String


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How To Reopen Sqldatareader

Feb 23, 2012

How can I reuse(reopen) same Datareader after calling Close() ??

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Close A Text File Which Is Opened And Write To It?

Jul 15, 2011

I am trying to write text to a file in this path "C:\Test\test.txt" and when I want to save image filenames to this path I need to check if the file is opened and if it is opened I need to close the ".txt" file and write the text to the text file.[code]...

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Write A Code In Close Button In Form?

Oct 2, 2008

How can I write a code in the close button in the form.

Example, if the user click the close button (the red box with X) then a message box will appear if he clicks yes then it will end, if cancel the form will not close.

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2010 : Write Code For The Close Button At The Top Right Of The Form?

Apr 10, 2011

I have a form in Visual Basic 2010 in Design view, and at the top of the form there is a close button along with the minimize and Maximize Buttons. is what I require is when that close button is pressed/clicked I want to close the application

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Error To Reopen Excel File

Sep 28, 2011

I have a vb.net application that opens two workbooks excel, if I close the excel file and try to reopen them is still an error:"COM object that has been separated from its underlyng RWC cannot be used".

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Why Databse Will Reset To Default Whenever Reopen It Again

Apr 7, 2011

Why my database always reset and what i had enter to the database using my application will be erased.if i dont close the application. the data will stay.

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Reopen A File Immediately After It Closes Via My C# Application

May 18, 2012

I ran out of ideas and couldn't find any reference about it so here I go... I need to keep a secondary application wich is not related to my c# project always running in background. So if this secondary application crashes or someone else close it manually it will automatically re launch again via my c# app.

I have no clue of how to accomplish this one, I mean checking if this application closes by something external to my c# app.

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VS 2008 Auto-reopen External Process?

Jun 21, 2010

Constant monitor for process, if process not running execute this()

Imports System.Runtime.InteropServices
Imports System.Diagnostics
Public Class Form1


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