Parse Delimiter Text File?
Apr 12, 2012
I'm trying to use VB.NET to parse a very large plain text file (2 GB). It is a database and has a field delimiter of SOH and a record delimiter of STX. I want to separate the fields and records of the file.
I would normally read each line of a text file and then use the split function to separate out the fields. I can't use this approach as there isn't always a delimiter on every line.
Is there any way to read a file until STX is found (rather than one line at a time)?
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Mar 14, 2010
I am wanting to write an application which opens a delimited text file (either comma, pipe, colon, semi colon) and displays the file on the form. The same feature is in Excel when you import a data file. After selecting the file it shows the contents and you can choose the delimiter. Once the delimiter is chosen the data shown reflects this and updates to show the correctly formatted data.
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Jul 20, 2009
Alright, im trying to load a text file into a list box using a delimiter(sp?)I have 2 list box's lstFirstName and LstLastName I have the code to load it into a list box
r = New IO.StreamReader("c:\test.txt")
While (r.Peek() > -1)
lstFirstName.Items.Add(r.ReadLine)
End While
r.Close()
And at the moment this will just load the whole list box, how can I use a delimiter to split it up?So John Doe in the text pad will show up as lstFirstName: John lstLastName: Doe Sorry if im not all that clear, if you dont understand I will try to explain it clearer.
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Nov 2, 2010
How can I change the delimiter when writing my Access table to a text file? I was hoping it would be as easy as adding a similar option like we do for HDR=No; maybe Delimiter=|
Dim AccessConn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|mydatabase.mdb")
AccessConn.Open()Dim AccessCommand As New System.Data.OleDb.OleDbCommand("SELECT * INTO[Text;HDR=No;DATABASE=" & userPath & "].[" & fileName & "] FROM tblMyTable", AccessConn)
AccessCommand.ExecuteNonQuery()
AccessConn.Close()
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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 22, 2010
I occasionally have to search a very large text file as a troubleshooting step. The file is continuous text (with spaces between much of the text) but almost everything is date/time stamped. The text is actually messages between two machines so I'd like to insert a line break after every message so that I can follow the protocol exchange. Thre are also a few key words that I'd like to again, separate with a line break.
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Nov 29, 2010
I occasionally have to search a very large text file as a troubleshooting step. The file is continuous text (with spaces between much of the text) but almost everything is date/time stamped. The text is actually messages between two machines so I'd like to insert a line break after every message so that I can follow the protocol exchange. Thre are also a few key words that I'd like to again, separate with a line break
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Nov 11, 2009
I am trying to pull out a row of comma seperated fields from a text file. I have a combo box which pulls a product number, and what I want it to do it after you select the item in the combo box it will search through the text file and pull everything in that row?
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Jun 2, 2009
I am using VB.NET 2005 (if that matters).I need to parse a text (log) file in which to process lines like:
Program Up at: Tue Jun 24 11:32:53.656 2008 - TerrificProgram.exe
<some lines here which I ignore>
0.00:24:16 - Emergency Stop!
<more lines to ignore>
Program Down at: Thu May 29 22:22:56.000 2008
where the 0.0:24:16 is the offset in TimeSpan format (d.hh:mm:ss) relative to the 'Program Up at" datetime.The 'Program Up at: <date/time>' line I successfully detect (in another function which works) and as a result a set a Boolean flag that I am in a valid <Up> - <Down> sequence and I also set a Start-up DateTime var to which to add the offsets later.
The task is to convert the TimeSpan at the beginning of the 'Emergency stop' line to a regular DateTime expression and to write the converted line to another log-file.Simple, isn't it?The function I use for the above purpose is:
Private Function IsTimeSpan(ByRef InputLine As String, ByVal ProgStart As Boolean, ByVal DTofProgStart As DateTime, ByRef NewDateTime As DateTime)
Dim iLine As String = InputLine
Dim Index As Integer = iLine.IndexOf(" ")
[code]....
What I am doing is I pass each line ('InputLine' parameter) from the original log-file to the function together with the 'in <up>-<down>' flag ('ProgStart' parameter'), the start ot program DateTime (in the 'DTofProgStart') and I want the NewDate to hold the real datetime of Emergency event occurence (not its offset).
What happens is that I successfully detect the lines of interest but the NewDateTime is not updated (though 'ts' is in the correct format and the assignment 'NewDateTime = DTofProgStart' correctly assigns the passed value).Another curious thing is that the line
InputLine.Replace(testStr, NewDateTime.ToString("MMM dd HH':'mm':'ss yyyy"))
does not change the original TimeSpan beginning of 'InputLine' with the regular DateTime (though not updated) in 'NewDateTime'.Why?
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Jan 13, 2012
Example Data Link - Sorry, wouldnt format correctly when pasted.
1.
Dec 01, 2011
06:00:00 AM
Dec 01, 2011
[code].....
Output something like
12/1/2011 6:00:00 AM 12/1/2011 7:05:00 AM 65 65 2.11
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Nov 19, 2010
# TAG NAME = is saved to a file using the code below but when I load that same file back into a RichTextbox Control using additional code below, I get inconsistent results as I try to parse the text. Has anyone else had this problem?'Save the contents of the RichTextBox into the file.richTextBox.SaveFile(saveFile1.FileName, RichTextBoxStreamType.RichText);'Retrieve contents of File into RichTextBox control Dim logData As String
logData = System.IO.File.ReadAllText(path + "\" + filenname);
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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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Jul 5, 2009
I have to parse through a text file that is growing and currently is about 30MB, but it takes a long time for the stream reader to load it before It can loop through the lines. Is there a faster method other than the streamreader?
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Jan 20, 2011
I'm running into a problem whenever I try to parse a text file by each line. I know I could use stream reader to read line by line but it is a lot easier to simply use split() and I would also like to know the reason why split() doesn't work.
For example, I created a file "test.txt" and filled it with the following text.
text1
text2
text3
then put the following code in the load event of the form (a button click would work the same).
[Code]...
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Sep 11, 2011
I am a completeBrenner of vb.net using the below code for download stock price from yahoo finance
but it is difficult to add stock symbol always in code,so I want to use a text file and add stock symbol, A Program will read the text file and [code]...
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Jan 23, 2012
here is a snippet of the file,
Year 1
mandatory
COM137,Mathematics for Computing,20,2
COM140,Computer Technologies,1-2,20
COM147,Introduction to databases,1-2,20
Year 2
[Code]...
in here is where i am having the problem i don't know how to get all the information i need into one specific array element within an array.. i want to get the year and the module status added to the end of an array element
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Feb 26, 2011
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim StrInput As String = Display.Text
Dim firstInteger, secondInteger As Integer
firstInteger = StrInput.IndexOf("ad_list_link", 0)
secondInteger = StrInput.IndexOf("ad_list_link", firstInteger)
[Code]...
I need to string z from a webpage source file but having trouble cutting the code around it away.
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Aug 18, 2009
Can I get some assistance please on converting a basic text file into a excell spreedsheet (comma delimited).
I need to take this file that contains[code]...
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Aug 9, 2007
I want to catch the text from an html page.. you know that when you open any html page in the browser, you will see a text but with formatting.. because it's an html code having a lot of tags...
how to get the text from an html page and ignore all formatting and html code?
[Code]...
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Oct 22, 2010
My application is supposed to parse a text file (relatively easy) and create an excel spreadsheet report. Should I write a stand alone VB.NET application that saves the excel file, or should I use VSTO? I am unsure if there are any differences in terms of ease of development, usability issues, API functions available, etc.Are there any other programming languages/interfaces/libraries that will allow me to rapidly develop an involved excel spreadsheet? I am talking about things like functions, graphs, etc.
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Sep 27, 2011
I'm attempting to parse a text file containing several Windows paths; I'd like to use regular expressions if possible, and I'm using VB.NET.The file is formatted somewhat like so:
M - Network Mode
C:ClientSystem - System Path
C:ClientProducts - Product Path
[code].....
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Feb 22, 2009
I am trying to parse a very large text file for certain strings. The text file is part of a level-making software for an old game I play. The text file basically contains all the information the level designer software needs, but the only important bit is the 'texture information'. Basically what I'm trying to create is a little program that parses the text files and shows the user a list of every texture in that text file. The problem is, the strings denoting textures are not really easy to find, and I can't think of any sensible and fast way to get them...
[Code]...
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Jun 5, 2011
I'm working with VB.Net. I have imported some data into the Data Set.I have four columns of data.
[Column 1]This is a test[/Column 1]
[Column 2]This is a comma, Test.[/Column 2]
[Column 3]This is a double quote " test.[/Column 3]
[code].....
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Jun 11, 2011
I want to read a HTTP Post that comes from a server to a website. I am trying to write a script that basically parse the HTTP post that comes in as text format and read the variables in the text file then add them to a database.
I know how to do the second part but I am unsure about how to read the text file variables that comes from the HTTP Post
The HTTP post that get sent looks as below
CODE:
No Insurance
I am trying to write a code for this and have the code below
CODE:
How do I get the variables in this text file, mainly start after ":" and the last 3
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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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Jun 13, 2009
I want to read a text file with unlike delimters into a collection.This is what the file looks like:
_Item 4916 0.00 781.21
_Item 2831 0.02 842.25
there are 10029 items and i am trying to get each items description into 3 different collections: Item "names" (first column), Item "weights"(second column), and Item "values"(third column).the delimiters are as follows:
______(3 spaces)____(1 space)____
considering the amount of items in the file, it would be a complete waste of time to edit it.
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Sep 15, 2010
I am trying to use Microsoft.VisualBasic.FileIO.TextFieldParser for parsing any format of tab delimited text file that user may have and show the data in web page in tabular fashion.I have sample tsv file with text qualifiers such as quotes saved in different encoding styles for different platforms such as pc, unix, mac saved using textpad. and I am trying to parse these using TextFieldParser. It works for all PC files but fails for mac.
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May 30, 2012
I have a csv file which I am populating to a datagridview. I am delimiting it using "," and "space". My csv file has "," at first instance and "space" in next two instances. I want to delimit the first instance using "," and the second instance using "space" and the third instance though has "space" I wanna ignore that space.
My CSV file :
HTML
jarnvagstag,Mantel,Mantel1,Mantel2
100tag,01/01/1750 11:45:32 PM
200tag,01/02/1750 12:57:57 AM
[Code].....
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Jan 24, 2012
I've made a rudimentary program that combines multiple files into one single file. Currently if I combine two .csv files together the output comes out correctly for what I need, which is a coma delimited file. When I try to combine two .csv files into a .xls file it doesn't format correctly (I get all the data separated by commas, but thrown into one column in the .xls file). For this reason I believe I need to add a delimiter.I'll post my code below.
[Code]...
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Jun 11, 2011
Ok so here is the HTML of the page:
<!-- Generated by F12 developer tools. This might not be an accurate representation of the original source file -->
<html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><head>
<meta content="text/html; charset=utf-8" http-equiv="content-type">
[Code].....
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