Extract Certain Data From A Text File?
Jan 21, 2011
To simplify what I am trying to do, let's say I have a text file with only one line of data.
The data in this case is color info for one pixel:
Color [A=255, R=255, G=200, B=128]
What I am trying to do is read the text file and extract the hex color info and save them to their own variable.
So once the code has run, these should be the contents of the three variables.
RedData = 255
GreenData = 200
BlueData = 128
I have managed to get something to work but I know the code is terrible and is incredibly slow when I try to run through hundreds of lines in a text file.
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim PixelData As String
[Code].....
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Feb 16, 2010
Imports System.Globalization
Imports System.IO
Public Class Form1
[Code]....
I have found the above code from the net and it works fine as I would expect. I know this because I have added a put the String StoreFile into a text box and it worked. From what I understand about the code above is that we are reading the file test.txt until we reach the end of the file and we are storing it into a string.
What I would like to do is either:
1. Search the String StoreFile until I find the text of my choice, and then extract the characters around it. See attached txt file.
For example, if I wanted to search for MNAUSD in the attached txt file, I want to grab the values on the line (highlighted in blue) and make them available to my program and ignore everything else.
"MNAUSD",UNITED STATES,US $,M,1.558850,1,1.369850,1.113500,L
I know these files are comma delimited, but I would rather use a regular expressions if possible as I have other files that are not comma delimited, so it would be ideal if I have a regular expressions to handle the search and extract
OR
2. Search the File test.txt LINE BY LINE, until I reach my search text MNAUSD and then extract the same values as above.
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Jun 23, 2010
How can I parse a text file and extract the data to excel file. The text file is in the following format
CustomerInformation
Tim Alen
596 George Town
[Code].....
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Oct 21, 2010
I am using Streamreader to read a text file containing data such as the following:
IN;SC;PU;PU;SP1;LT;VS10
IN;SC;PU;PU;SP1;LT;VS10
PW5;PU4179,27448;PD4179,29951;PD3244,29951;PD3244,30286;PD5494,30286;PD5494,29951;PD4555,29951;PD4555,27448;PD4179,27448;
The final goal is to use the numbers next to the PU and PD characters to perform specific calculations.
Essentially, I think the code needs to do the following:
1. Read each block of characters ending in a ";"
2. If the block commences with anything other than PU or PD, discard it
3. Extract the numbers in such a way that calculations can be performed. The following is an example:
x y
PU4179,27448;
PD4179,29951;
[Code]....
Essentially, there will be hundreds of these rows and I will need to sum up the deltas so that a specific formula can be applied.
I have tried doing this a number of ways but each seem very inefficient (using text boxes to store/swap data and creating additinal text files are 2 methods I have tried) and so I'm looking for some direction.
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Apr 4, 2010
I need to load and parse a text file and extract data between points on any given line. I can load the file, but it's the parsing that's giving me headaches. e.g. "Phoned Jim and arranged for John to attend site" First I need to search for "Phoned" because the line always starts with that, and then I need to extract "Jim and arranged for John"
[Code]....
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Mar 11, 2010
I am trying to build a VB.NET 2005 windows app which gets cars info from a webpage(webapplication) that has a username and password.
I was able to programmatically login to this webpage(by automatically populating the input boxes using webbrowser control) And after I logged in, I could view the cars data in browser and I did "View Source" but the cars data (such as car model, brand, color etc..) were not viewable in the page source code. So how can I read these data with my application?
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May 9, 2009
I need to parse some text to extract the name/path of an image file inside an X file. The part of the file looks something like this:
TextureFilename {
"C:\\Users\\USER\\Documents\\Map\\Textures\\Grass01.dds";
}
[code].....
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Jun 7, 2011
I've got an application that passes commands to a terminal window and saves all the output to a text file Here is one of the commands my application passes to the terminal
MyProcess.StandardInput.WriteLine("host " + device)
The output of which is
"HostA has address Y.Y.Y.Y"
this along with a whole bunch of other text is saved to a text file...my question is how do I find the sting "HostA has address Y.Y.Y.Y" in that text file and then extract the IP address and assign it as a string variable?
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May 26, 2009
I'm trying extract text from pdf file. I used this code
Try
Dim sb As New System.Text.StringBuilder()
Dim reader As New PdfReader(sourcePDF)
[Code]....
this code work correctly but some characters example ("ş","ı","ğ") doesn't extract. how can I extract this characters. I have searched but ı cant find .
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Dec 3, 2008
I have a situation where certain information from PDF documents is entered into a Data Base. I need an easy way for a user to do this. So given a situation where a data entry program is running, then certain data is taken off a PDF document, then entered on to a data entry form etc. So it would be nice to say, have a user click on certain entries on the PDF document, or the document itself and then have the required data load on the data entry form automatically, with using cut and paste on each entry. Note the required data from the PDF document is in same each time, just different values.
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Feb 12, 2009
Ok, here is the issue.I have a xyz.css file which I read using the streamreader.
the file has text in the form
.Addfont { ......
.GridLayout {......
a.Master Layout {......
Now I need to extract the text between the '.' and '{'In this case it would be Addfont GridLayout Master Layout How should I go about this.... I tried using the readline() method but it didn't work for the
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Jun 22, 2010
I have a insanely large file that has a lot of customer data in XML format. The start of a customer and end are how I'll determine the starting and ending points of the customer data I need to extract. The is the number I'll be searching for. I'll input a regular text file with 12-byte document numbers into the file (Doc Number List.txt), search the massive XML file (example.xml) for those document numbers, find the data before and after the DOC_NUM tags, but within the CUSTOMER tags and extract it to a formated file. The formated file needs to have these tags, <?xml version="1.0" encoding="ISO-8859-1"?>
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Feb 17, 2009
Suppose I already know the line number such as row 100 in a text file. How can I directly get it without many codes?
Code:
.....
99 Dim s1 as String
100 s1 = "Test"
101 MsgBox("Test Ok")
[Code]....
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Jan 27, 2010
i have this assignment (task sheet attached) but i dont know exactly where should i complete from. i need to extract information from a text file. it involves a complex string manipulation. here is the code that i already did but i am not sure how can i extract the information i need from the appendix in the yask sheet. [code]
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Feb 7, 2011
I am trying to extract a specific bit of text from a xml file. The file is located in C:Testspac emp1.xml and the specific text is between <space></space>How do I go about getting this text and displaying it in a textbox.
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Dec 7, 2011
I have a text file that has several rows and columns. I need to read only 2 columns and then to pass the data to an array or collection. My approach was to read the text line by line and then to remove the unnecessary rows and columns. The format of thetxt file is the following:
( PRINTSO )SUBSCRIBERS ACCOUNTS SUBMITTED FOR SETTLEMENT THROUGH BANKS OR AUTHORITIES' STAFF PAYROLPAGE1
SETTLEMENT DATE
[code].....
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Nov 16, 2008
I would like to know if anyone could possibly write something to open a file containing hex data select data from offset: E000 to the end of the file then save it as a JPEG image.
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Jan 28, 2010
I've used Python on and off for the last decade in a very limited capacity (mostly to do my math homework), but this project I'm working on now is almost overwhelmingly complex and difficult to me. Mostly due to my lack of immersion in programming as a whole.
Anyhoot: here is what I'm trying to accomplish: part of our new VoIP system is an enterprise messaging component that will take a voicemail, embed it into an email (as a WAV stream), and then drop it into the email address associated with that extension. However, if that user is not configured to use enterprise messaging or if they've not opened their email client in awhile, the voicemail+email object just hangs out in a folder on the enterprise messaging server. When an employee is terminated, the EM server continues to take VMs and store them in this folder.
As a part of the directive from management, we've been instructed to deliver these voicemails to the employee's manager for review before we pass the extension and mailbox onto someone else. What we've been doing up until this point is opening the VM+Email objects in Notepad++ one at a time, removing the email data from around the WAV file, resaving it with a *.wav extension, and them attaching them before sending them along.
Suffice to say, this process becomes very tedious and error prone when you have a TON of these to work with. I thought that I could use VB2008 to automate it.
The code I wrote grabs the VM+Email object as a text stream, uses an InStr() and InStrRev() function to identify the beginning and ending points of the WAV stream, and then uses a Mid() function to extract it before resaving it as a WAV file. This works, but the problem is that the WAV file it saves is barely audible and it sounds awful.[code]...
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Sep 8, 2009
I want to extract data from pdf .Is it possible to convert pdf to xls using some kind of COM object.
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Feb 12, 2009
I have a xyz.css file which I read using the streamreader.the file has text in the form
.Addfont { ......
.GridLayout {......
a.Master Layout {......
[code].....
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Jul 21, 2009
I'm using Visual Basic 2008. Im my work, I need to capture data from a spectrometer and display it on graph. I've managed to capture the data and save it as a text file. Now I'm confisued How to sort it out my data from the text file?[code]...
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Aug 8, 2009
My text file look like this[code]...
I want to extract those lines according to value in ( ).
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Dec 31, 2010
I have a Word document that has font sizes of 14 and 18, and the document is of 1500 pages.
I have to make specific changes to the font 14 and font 18, and so after searching, I came across VBA for Word that would allow me to do this easily.[code]...
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Mar 5, 2009
My .NET application gets this XML response from the W3C's public validation server:
<?xml version="1.0" encoding="UTF-8" ?>
<env:Envelope xmlns:env="http://www.w3.org/2003/05/soap-envelope">
<env:Body>
[Code]....
How can I fix the broken code above? Or: Am I way off track with this?
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Apr 1, 2009
i m working on the project like retrieving the data from the tally using our vb application and store the data in database. i have fetched the xml tags from my vb application to the tally by sql query. now my question is how to extract the data stored in between the tags using vb,.. and store in database.. i need the procedure and the code.
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Aug 19, 2009
i am able extract TEXT from rtf file, but i am unable to extract and convert to images as bmp or jpeg or gif and save them to harddisk.is there any options for converting hex/binary to image?i tried to hex to base64, still it no-use
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Jun 22, 2010
I have a file that contain data structure as below:
L,13206,11,02,06,000,3981.100
19,22,25,26,19
END
[Code]....
so how can i extract 1 and -18970.811,53728.643 and export it into a new output file with new structured as below: C 1 -18970.811 53728.643 For your information, the value for -18970.811,53728.643 will be placed after string K,1,P or K,2,P or any number between K and P...
One more thing is i want to append that new formatted data into old ready file that already contain old data... new formatted data will be append to the top of the old file..
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Mar 24, 2010
I got an online txt file(url..)
I want my vb 2008 program to read all text from [url]... and put all the text there into a textbox in a vb2008 form, what code is needed to do this?
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Aug 3, 2010
I am desperate in solving the following puzzle: I use a thermal camera (a camera that captures thermal images by working in the infrared spectrum).The camera produces thermal jpeg files that includes visual (the picture one can see) together with the thermal data (thermal energy levels) in one jpeg fully radiometric(=file that holds energy data) file.
What I want to do is to try to extract the energy level data for each and every pixel of the image (usually 320X240) and store it in a table, using my old favorite vb.net if possible.
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Dec 4, 2011
is there a way to extract all the text from a Word Document in VB.NET without actually openning the file? I'm asking since it is a very time and memory consuming operation to open a word document, select all, assign it to a variable and the close the file.I have a routine the opens all emails in a mailbox and analyses the body and subject object for regular expressions. I would like to do the same for the attachment, if it's in Word. if it's not possible to extract without openning the file, can anyone give me the best way to do it so that the routine doesn't destroy my server memorywise?
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