[VB2010] Read A Text File Only If Is Not Changing?
Feb 27, 2012
I read every second a Log file generated from an external program:
Try
Dim fs As FileStream = Nothing
fs = New FileStream(LogFilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)
[code].....
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Mar 15, 2012
My test vb code:
I need read a value from a ini file, but aways get a very huge number, not key value or default numbercode see below:
class:
Public Class Cinifile
'API declare
Private Declare Function getprivateprofileint Lib "Kernel32" Alias "GetPrivateProfileIntA" (
ByVal lpApplicationName As String,
[CODE]...
Other question is : when I call API getprivateprofileint in vb2010, is any different between winxp and win7 64bit? my OS is win7 64bit, vb2010
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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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Mar 20, 2012
I have a text file with the following contents:
China,Asia,100000,3500000
England,Europe,20000,49494
USA,North America,430933,33943
Brazil,South America,754744,74744
How can I export all these under the headings to Excel:
Country Continent Population Area
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Jan 4, 2010
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]...
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Dec 15, 2009
I'm using vb.net 1.1 to develop the program. I got text files that contain test result from a machine, like below.
T1 1.24535 2.56335 2.43253 1.24538 2.55619 4.35243
T2 1.42542 1.63728 3.57295 4.59275 1.57320 2.72057
T3 5.12857 2.45375 6.38593 2.58375 3.57259 3.57204
I need to check the test result with the data from database, to find out which test result is failed. If there is a fail test result, I will show an alert to the operator and stop the checking process. Until the operator close the alert, then the checking process will continue from the last read point.
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Mar 10, 2010
Is there anyway to take a static stream reader, and switch it to another text file based on the user changing the file?
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Oct 3, 2009
I'm trying to make a program that can read .mp3 data (Such as Artist, Album, Year, Track number, etc), but I need to be able to do two things that I have no clue how to do:
1. Read starting from a specified string (E.G, On one line it states: [code]
2. Read until a specified string (E.G, On the previously stated line,I need to read starting from what I said, up until.
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May 7, 2010
Ok so I have a combo box that lists a set of names. What I want to do is match a selected name to a text file and read from it. The text file contains the same name and has grades listed below:
ex.
Johnny Bravo
30
10
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May 12, 2009
i have 5 textboxes in a form. I have a streamwriter that writes all of their text to on text file like this:
Code:
Dim xfile As String = Application.StartupPath & "/Set.txt"
If File.Exists(xfile) = True Then
Dim writex As StreamWriter = New StreamWriter(xfile)
[code]....
I was wondering how to get the text under the each number and place it in the corresponding textbox.
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Feb 17, 2010
Is there a way to specify where in an open file a program is supposed to look (like specifying the current line)?
I'm using FileOpen(1, path, OpenMode.Input)
to open the file, but i need to jump from place to place in it
Here's what i'm trying to accomplish:
I'm trying to navigate round in a file containing questions for a quiz game, but am having no luck.
The general form is like this
**********
~(tile)~(question)~(answer)~
~(tile)~(question)~(answer)~
~(tile)~(question)~(answer)~
[Code]....
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Dec 15, 2009
I have a csv text file, shown below that I want to edit based on user inputs. When the user wants to change the current price of a stock, they enter the stock name, and the new price. When the button is clicked, VB needs to find the appropriate stock, and then change the current price.The data needs to be pulled from the text file into a temporary file, changed, then the temp file needs to be renamed to the original file name and the original file deleted.This is the only part of the program I can not figure out. I have put my program code here as well. The click event that I need this to work on is: Private Sub btnUpdateStock_Click --- I have been playing with code in that section, so that's why there si abunch of crazey code there.
[code]...
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Jun 2, 2009
when writing to a text file from an application what do i need to do to change the font in the text file
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Jul 1, 2009
I have lines in my text file like this:
x y
x Y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
Lets say I have 20 lines like this. I want to change this lines according to user input. So user will input how many lines they want to change in terms of row and column. In my program
Row=TextBox5.Text column=TextBox6.text
User must enter initial value for x and y. Let say the initial value is
x=1 y=1.
Row=2 column=5..
Now my lines should look like this.
1 1
2 1
3 1
4 1
5 1
1 2
2 2
3 2
4 2
5 2
x y
x y
x y
x y
x y
x y
x y
x y
x y
x y
Since I enter row=2 only two set of lines is change other lines remain unchange. But in my coding all the lines is changing like this:
1 1
2 1
3 1
4 1
5 1
1 2
2 2
3 2
4 2
5 2
1 3
2 3
3 3
4 3
5 3
1 4
2 4
3 4
4 4
5 5
which is wrong.
This is my code
Dim lines() As String = IO.File.ReadAllLines("C:\wirematches.txt")
Dim xValue As Decimal = Val(TextBox1.Text)
Dim yValue As Decimal = Val(TextBox2.Text)
Dim altValue As Decimal = 2.54
Dim lineTracker As Integer = 0
[Code] .....
This code working fine for changes the column. But i dont know where i should write the code for row.
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May 4, 2009
I'm new to VB and trying to figure out how I can replace a bit of descriptive text in a binary file. I presume its binary as I cant open it with anything but a hex editor. I've changed the text (file description) in the hex editor and saved it fine but I'm unsure how I go about saving just the section of information I need. I can work out the saving bit later.In the attached file you'll see the highlighted bit I want to edit. I need to replace the whole line or the file corrupt but I can fill it up with null characters and the numbers are just
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Mar 21, 2012
I need to write, read and delete data from a MSAccess database file (.accdb)
Is there a SIMPLE sample to get me started?
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Aug 5, 2010
i am working on read line by line . At each line that my app read , i added a event . How do i read a text file till the end and Stop it? there is how it work :
[Code]...
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May 15, 2006
Get Program To Read Text File And Display 2nd Line Of Text
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Dec 4, 2009
I am trying to read a text file into a text box, and show the progress bar loading. Sometimes if the text file is big, i don't know when it will finish reading it. This is basically the code i use to read a text file, but i don't know how to show the progress bar.
[Code]...
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Jan 2, 2010
I have a text file containing 10 pieces of information. I want to read the information from the text file and put it in text boxes on a form, so that the user can view the information and edit if required. What is the best way of approaching this?
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May 21, 2009
in my text file i have two part. Called bottom and top. So i need to read the Top part first then and match the line with bottom part. Its like this
[Code]...
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May 26, 2008
how to do this for vb6 however i am using vb 2008 and the code for vb6 does not seem to work.
I have designed a form with a text box on it, and a command button underneath. The idea is to run this as a sort of stiky notes section.
I want the text box to read rich text into the textbox (C:\\stickynotes.rtf")
Then i have a command button underneath which i want to save the content of the rich text box to the rtf file (C:\\stickynotes.rtf). This is so that the user can edit and ammend information.
here is some code i have so far
Dim fileReader As System.IO.StreamReader
fileReader = My.Computer.FileSystem.OpenTextFileReader("C:\\stickynotes.rtf")
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Mar 4, 2012
So far what i have is a button and a text box and when you press the button it my.computer.filesystem.readalltext(from this file as string) but what i want it to do is to read all the text in that file minus whatever is in parenthesis so like lets say the file has saved into it, hi my name is bob but my realname is (jeorge) that when you press the button it reads and shows everything in the file minus jeorge which is in parenthesis
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Jun 24, 2010
im trying to have the user press a button and a window pops up to select a file. then it reads the file and puts it in a text box. how could i do this?
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Oct 7, 2009
I a very large text document, I need to read some lines and at the end of each line, insert a text from the header of each page to he preceding lines.I have the following code the reads the file and displays it on a list box.Public Class Dialogs..[code]
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Mar 21, 2010
I need to implement a routine to read a plain text file, BUT that file has a predefined format.The file format is as follows:
Quote:
<FILE_PROPERTIES> 'The "< >" also appears
Propertie1="String" 'It's possible to have spaces after or before the "="
Propertie2="String"
Propertie3="String"
PropertieN="String"
[code]....
Is there any Windows API Routine to read something like that?Or could you point me an URL where something is implemented?I don't want a procedure to read the file line by line and comparing them with Line Input because blank spaces, empty lines and comments starting with " // " may appear too, and I don't want to take them into account, but also I need to save changes to the file, but only to the modified section, without having to read the whole file, and re-write it completely.
Binary access can't work, because I don't know what's the size of each "section", since the number of elements into it can change.
I need something like the "ReadINI" Windows API Procedure, but allowing me to read the "[XXX]" sections headers, and also the "<XXX>" file title header.
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Aug 12, 2010
Before I begin I would like to mention that I am not a noob in VB, it's just I've never had to do anything this complex before. Basically what I want is to have a program that you can load a txt file in, have it copy key words, and paste it in a textbox so I can use it later on. So in this text file, there is a bunch of info, but I am only needing a certain part. Here is an example of a text file (actually a .dat file, but is easily read):
[Code]...
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Jun 21, 2010
i would like to ask is there anyway to read a txt file with UTF-8 encoding using streamreader or filestream. the txt file is contain some extended ASCII that makes me cannot read the characters properly. I hav tried Encoding.ASCII.GetString(Encoding.UTF8.GetBytes()) but still it return wrong character when it's reading extended ASCII code.
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Dec 13, 2009
I want my program to read certain text in a text file. For example if I have a text file that contains the following info..
acc=blah
pass=hello
I want my vb.net application to get that the account variable is equal to blah, and the password variable is equal to hello.
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Jun 17, 2010
I am writing a simple program that will encrypt the text that is held in a text box and save it to a text file but I want it to be able to open a text file and decrypt the contents.
Ok now all the threads I have read are about reading a text file that is in a preset location.
What I want to do is open a text file that the user selects and have the contents displayed in a text box.
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