Extract Specific Data From A Text File?
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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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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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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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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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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Jun 14, 2012
I know how to extract an entire page source into VB.NET, but once I do that how do I make VB.NET search the text and return a specific vlaue that is not constant? Take this line from the page source for example:
[Code]...
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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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Jul 4, 2008
I need to extract specific data from a database. With starting point in this data, I will collect information on the internet. After the information is collected I need to check if this information is already stored in the database, and if not, then add it. This action is being repeated about 500-50000 times each time the procedure is being executed. (not often)
The approach I'm taking seemes sleazy and ineffecient and I was hoping you could point out some places where I might be able to optimize it. I've two open connections at the same time. The first I use to extract data, and it stays open throughout the whole session. The second connection is being used first to check if an entry already exist and if not, to add the data.
The reason I am using two connections is due to the fact that I got a reader bound to the first one, so it is rendered unavailable.
I was thinking that maybe checking if the data existed, and adding it if not, maybe could be contracted into one command execution instead of two. I don't know if it would be possible to do this with one connection only as well, as it seemes more proper.
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Jun 15, 2012
I know how to extract an entire page source into VB.NET, but once I do that how do I make VB.NET search the text and return a specific vlaue that is not constant?
Take this line from the page source for example:
<td id="actualPriceContent"><span id="actualPriceValue"><b class="priceLarge">$4.30</b></span>
the text is always constant but the price is not - how do I make VB.NET return the price?
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Sep 29, 2009
I need to extract the whole string if the string has today's date on it. I have already coded a string that displays today's date in the following format - yyyy/MM/dd And I've coded the parsing links bit, now I need to simply search the Listbox and return the first string with the date. [Code]
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Jan 14, 2009
i have a log file which contains hundreds/thousands of seperate XML messages and need to find a way to extract a complete xml message depending on the parameters given (values of nodes).My biggest problem is that even though i program a fair amount i have had very little contact with XML or the XML libraries of the languages i use and didnt think that a simple text parsing would be an elegant solution!I am going to attempt this in C# or VB.net
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Dec 13, 2010
i am a beginner in vb8 i have a text file named alarm.txt,sample alarm.txt file is shown below
can someone help me to read the alarm.txt file and extract data.for eg
[Code]...
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Jul 24, 2011
I wonder if it is possible to find a specific row and specific columns in data base file (Access) . You see , I am using a DataGridView control to show only SOME of the columns (fields) of a table from an Access file . For example , lets say that in the DataGridView control I only show the following fields :Field1 , Field2 and Field3 .Now , when the user selects an entry in the DataGridView control , I want to insert the text from Field4 into a text box on the form .
The problem , however , is that I don't know how to get the specific row in the data base file and also I don't know how to get the text in column (field) Field4 of that row .One thing that might be important is that the index of the row in the data base file is not necessarily the same with the index of the current row in the DataGridView control . This is because in the DataGridView control the rows are order by the contents in the ID Field .ol .
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Aug 30, 2009
Hi, i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated.This is the code im using right now:
Private Sub TreeView1_NodeMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
Select Case e.Node.Index
Case 0
[code]....
Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
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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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Feb 28, 2009
i'm trying to use the treeview to display the text of a rtf (rich text file) file when an specific node if clicked.HomeOMGWOOTFor example, if i pick OMG, i want the text of lol.rtf to be displayed on a richtextbox. But somehow i just can't manage to get it... I know to import the text of a .txt file to a textbox, but using the treeview makes it more complicated. [code] Another thing is, that i can't import the *.rtf text into a richtextbox and i don't know why.
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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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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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