Text File Read/write Operations?

Nov 29, 2010

I am currently working on an application which requires reading, writing and modifying data from a TEXT file. I have searched a lot but was not able to find a simple way to achieve this. I have to use a standard VB form with textboxes for ths text file opearations. s

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Text File Read / Write And Modify Operations

Nov 29, 2010

I am currently working on an application which requires reading, writing and modifying data from a TEXT file. I have searched a lot but was not able to find a simple way to achieve this. I have to use a standard VB form with textboxes for this text file operations.

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Synchronize Datatable And DataView For Read / Write Operations?

May 5, 2010

I have application in .net 2.0 in which I have a DataTable object globally in my application and have different dataviews in whole application.

When an action performed i have create many threads lets say 5 in which data is read from different dataview, meanwhile while 2/3 threads are reading data(not all 2 more left to read data) a thread write data in datatable. So we get exceptions like "Enumeration update" or "parameter not null" type.

I have use ReadWriteLock for this but do not find any luck it gets stop on ReaderWriterLock.AcquireWriterLock().

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Read - Write Text File ?

Jul 5, 2009

My text file look like this;

M48
METRIC,LZ
VER,1
FMAT,2
DETECT,ON

[CODE]..............

I must read the file scan for value T250,T169,T168,T170,T176............which ever value start with T after the line"DETECT,ON". then i must sort these values so that it will be in acending order. Then i must write back that values in same text file after the line FMAT,2.. Now i can read the lines which contain T. Then i store that lines in array. My code shows error when i used sort methode to sort the array which i store in array.

This is my code

Dim filename As String = strFileName
Dim i As Long = 0

[CODE]...........

The sort methode give me this error "Overload resoulation failed because no accessible 'sort' can be called with these argument". Why it shows this error and how i write back the value after sort. Can i use append Text methde.

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Read / Write To A Text File?

Jul 26, 2009

I've got another simple problem. I want a 'survey' form to show up whenever the user opens the program for the third time. I, of course, have the survey form built.[code]...

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Read And Write To Text File?

Jul 2, 2009

I have a text file which look like this:

M48
METRIC,LZ
VER,1

[code].....

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Read Write To Text File?

Jul 5, 2009

My text file look like this

M48
METRIC,LZ
VER,1

[Code]....

The sort methode give me this error "Overload resoulation failed because no accessible 'sort' can be called with these argument"

Why it shows this error and how i write back the value after sort. Can ui use append Text methde.

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Read/Write To A Text File?

May 6, 2012

I'm writing an application for my Smartphone (OS is WM6 pro .NET Compact framework 3.5). Up till now i used VB6 so i'm pretty new to VB2008.

The application needs to store a set of items in a text file located on the device and retrieve them back. Since WM 6.0 doesn't support MS Access databases i have to work with the old fashion text files to store and retrieve my data. However since i'm new to VB2008 (and given the limitations of writing a smartphone application) I would llike to know how to write and read data to and from a text file.

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Text File Read/Write?

Apr 6, 2010

I just had a small question regarding reading and writing a text file.I have a program that reads lines out of a text file and writes them out to a new version of the file, changing text in there (same amount of digits).But the new file it creates is smaller than the original file, although the contents looks the same.

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Write / Read From A Text File?

Nov 4, 2009

I have a problem read / write from a text file When i read from the text file using

Using st As StreamReader = New StreamReader("musik.txt") And when i write to the text file using:

My.Computer.FileSystem.WriteAllText("musik.txt", OpenFileDialog1.FileName, True)
Is it not the same place i read and write to , so how can I besure to read/write to this text file, the text file shall bee in my application.ALK

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How To Read And Write The Content Of Text File

May 5, 2009

how to read and write the content of text file to vb.net application. Now with the following code i can read the file. but the whole file appears in vb.net application itself. I want the application to read and write the content of file to textbox that is provided in the vb.net application. I don want the user see the file. My code to read the file is :[code...]

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Read / Write An Array To Text File

Apr 6, 2010

I'm looking for some code to write /read an array to a text file in vb6.i have an array of a fixed size, and i need to write that into a text file, then later in another program i need to access that text file and write every element to a new array of the same size.the elements will be integer values, but "Long" datatypes. there will be no strings or anything else, just whole numbers.

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Read And Write Back To Same Text File

Jul 2, 2009

I have a text file which look like this:

M48
METRIC,LZ
VER,1
FMAT,2
DETECT,ON
%
G93X0Y29
T250
X22Y0
X0Y0
T169
X016038Y11991
X203998Y11991
X203998Y-134725
T168
X216888Y105277
X216Y-108
X003148Y105277
X004Y-108
T170
X11Y1535
T176
X119035Y-126978
X024039Y-119104
X024039Y-120374
X024801Y-117961
X048118Y-124438

Now I need to do is I need to read the file after the line DETECT, ON then if I find T250, T169, T176.....Txxx which ever line start with T. I must read and write that line back in between the line FMAT, 2 and DETECT,ON in my same text file.

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Read And Write From One Text File To Two Arrays?

Apr 10, 2010

I've been making a program whereby users names and numbers must be stored in external files. At the moment I can get the names to read and write to a file with these lines:

Imports System.IO
Public Class frmDefaultMenu
Private Sub frmDefaultMenu_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[Code].....

Where each line has a name, a seaparator (,) and then the corresponding number.

When the program loads I would like it to be able to access that file, and store all the names into an array named ExistingUsers() and all the Numbers into an array called ExistingNumbers(), and then when a new name is added in the textbox, it is assigned the number "100" and placed at the end of the array, then when the application quits OR straight away, the external files are updated.

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Read A Text File And Write On Different Label In Program?

May 21, 2012

I want to read a text file and write the lines on different labels. Is it possible to generate labels?

I tried with four labels with label1, label2, label3, label4 names but I don't know how to create a loop to read every line of the file and write it in every different label. First line in first label, second line in second label etc.[code]...

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Read And Write Specific Line From Text File

Jul 26, 2009

I have two part in text file. Let say Part 1 and part 2. I want to write part2 in different file and part 1 in different file.

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Read/write A Simple Text File In Net 2008?

May 9, 2010

I am trying to read/write a simple text file in net 2008 but can't, as yet, get it to work. This is how I use to do it in VB6

Code:
MyStr = App.Path & "DataData.txt"
Open MtyStr For Input As #1

[code]....

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Read/write Images And Text In One File With Own Extension?

Apr 7, 2012

images and text and music in one file with my own extension?

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Read/ Write To Text File In Resource While Program Running?

Apr 27, 2009

Is it possible to read, write to a text file in resources whilst the program is running. If this is possible then can someone show me how it's done.

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VS 2008 - How To Write / Read String Array To Text File

May 6, 2010

How can I write and read a string array to a text file?

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VS 2008 : Code To Write And Read Structure To Text File?

May 10, 2010

i have the code bellow to write a structure to a text file, but nothing is happening,how can i get a error message if the file doen't exist?

Imports System.IO
Imports System.Runtime.Serialization.Formatters.Binary
Public Class Form1

[code]....

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Read Text File / Search For String Then Add To Line And Write Back?

Nov 18, 2010

I would like to read an HTML file, search each line to see if it starts with </head>. Then add the centering code after it. That line at destination file should read:
</head><table border="0" cellpadding="0" cellspacing="2" width="760"align="center"><tr><td>
After this I don't care to search for anything. Just read from source and write to destination. I know there are programs out there to find/replace text in series of files but I am not allowed to use external programs.

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Write Controls Text Into A .txt File And Read Them Form .txt File To Controls Again?

Jan 16, 2012

I have a form. And some controls(such as TextBox,ComboBox,etc.) on the form.Now,I want to store the controls' Text into a .txt file(or any other formarts).Then I want to read the text in the .txt file to my controls.

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Write Simple VB Code With *= Operations

Apr 18, 2010

I've designed a Arithmetic Calculator. I can get my additon button to work but not my multiplication button. My result total comes back as 0.

[Code]...

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VS 2008 - .txt File - Write The File Path So That Someone Else Can Download My Program And File And Read The File

Feb 27, 2012

Reading a .txt file in VB.net. My file path is C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt.

This is my line of Dim LoanOptionsFile As String = "C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt"

I can read the file when I run the program, but how do I write the file path so that someone else can download my program and file and read the file on their system?

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Mystream.write(t) Doesnt Work - Doesent Write Anything To My H.txt Text File

Dec 27, 2011

I have a trouble making this code work. When executed, it just creates a correct (with the correct name) file with the extension .txt but the the actual text inside .

Imports System.IO
Public Class Form1

Public mytext As String

[code]...

The strange thing is that while debugging, h, t string variables have the correct values, but somehow mystream.write(t) doesnt work (it doesent write anything to my h.txt text file...

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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.

[Code]....

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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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Streamreader - Text File - To Read Into A Listview - Read From A Specific Line In That File

Mar 11, 2010

I have a txt file that I need to read into a listview, but I need to read from a specific line in that file. Below is a sample of the txt file to read,

6400,3200,2,95.5,84,76.6,0
1,2,-20,15,0,0,0,"NO",0,0
TOTAL GPM= 6400 HWT= 95.5 CWT= 84.0 IWBT= 76.6 ALTITUDE= 0

CODE]...

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DataSet Thread-Safety - Synchronize Read Operations?

Feb 2, 2007

I have a multi-threaded application with several datasets that are read/written to from a couple threads. I have read that datasets can handle multiple readers and one writer. I have synclocks around all dataset writes and no synchronization around reads. I am experiencing random "Index was outside the bounds of the array." exceptions where a dataset item is in a conditional statement, for example:

[Code]...

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