I have a very huge server log files like files are more than 500 to 600 mb and even some files are over 2 gb data. the files are maintained for few years. it will be maintained as is. each log file has at least 1 million lines to 20 million lines.I am looking create an application which can find a line in the text file using regex, removing duplicate entries.how these huge file can be handled in a way it works very quickly.
View 5 RepliesI have a huge text file that stores a huge matrix. The size of the file has 120GB. There are tremendous rows and 25 columns. I am only interesting a coulple of columns, say column 3, 6, 8, 13, 20. How to create a small matrix which contains these columns. I want to find a effective way rather than read the entire file.
View 1 Repliesi have an old VB6 system that generates plain text files. When this old system writes "A" into the file, it writes (hex) "41". For an "ä" (a-umlaut, special gernam character), it writes (hex) "E4".
Now i have to process files like this in VB.Net. when i open such a file in the IDE, it displays correctly "ä" (But not always!). To see what i mean, please open a notepad and create a new file "ae.txt" with content: äöü. Now your file contains exactly 3 bytes: (hex) E4 F6 FC.
But when i write code like
Dim strTest As String
strTest = File.ReadAllText("ae.txt")
Debug.Print(InStr(strTest, "ä"))
i get 0 - so i cannot find back the "ä" - what do i need to do, to find it? And 2) for compatibility reasons, i have also to be able to create such files. How to do that? Seems the different encoding types do not work as i think.
I have been working on a program and I need it to unzip a zip file. I tried handling a zip file as a directory but that didn't work.It wouldn't hurt if I could compress files into a zip file to! But I need unzipping the file first.This is my code handling it as a directory:
Dim count As Integer = Directory.GetFiles(My.Application.Info.DirectoryPath & "Games" & game & "�00.zip").Length
MessageBox.Show(count)
It has an error saying it is not a valid directory name.
Such as the text file has 5000 lines and 500000 columns. Each line has the format "xxx,yyy,zzz,000,...."
View 39 RepliesI am using file.readalllines to read the file into a string, then using listbox.items.addrange and splitting by vbcrlf to insert the items. Is there a way to reduce the lag it causes for loading huge lists?
View 6 RepliesPossible Duplicate: Can .NET intercept and change css files?
I have configured IIS6 to get .NET to handle css files.I did the following steps
Launch IIS Manager Right-click on Default Web Site Click on the Home Directory tab Under Application Settings click on Configuration.Add a new association for .css and map it to .NET executable:
C:WINDOWSMicrosoft.NETFrameworkv2.0.50727aspnet_isapi.dll
How can I check if this is working, i.e. I want to change the default style of a page depending on the url, i.e. if the referer url is http://intranet, it should continue to use the old existing style style1.css, if the referer url is http://intranetv2, it should use the new style style2.css.
how to make VB handle my associated files.I made a program that opens fine when from the EXE file. But however, when I try to open it from the associated file, it behaves the same way as if opened from the EXE.So, where (in what method?) do I tell VB how to handle those files?
View 8 RepliesI have used many different "snipets" of code to download .txt from the interent however, each time, instead of showing [code]All failed to put it exactly how it is set out in the beginning. So I was wondering can anyone fix this? I do have a button to press so it downloads it and my declarations are:
-Imports System.IO
-Imports System.Net
the code for getting data from text files.
I have about 200 .txt files, all in same format as below.
m 998718989898
m 998766990878
F 67
P Thane
So, I want to import this in excel. I know the code for inserting the data in Excel, but no idea of getting the data from text files. This text files are actually used as contact management by the co and has contact name as file name.
providing code for getting data from a single file, Then I will run it in loop and insert in Excel.
I am making a recipe book that calculates the amounts of each ingredient needed for a dinner.The user inputs the number of people they are cooking for and then my program works out the amounts of ingredients needed, simply by * number of people.I know how to read from text files using commands such as: My.Computer.FileSystem.ReadAllText()But does anyone know how to take text for a text file, then multiply the contents of that file by the number of people?The text file only stores numbers, but I want to multiply each line seperately..Instead if getting the result of 10050*3, I want 100*3 and 50*3 on a seperate line.[code]For this to work, I suggest downloading the full project.You will also need to create a folder with two text files inside it. This will not work without them. "QuantityList.txt" and "IngredientList.txt".
View 17 RepliesI am trying to read information from a text file(.txt) using LINQ.I can't use a list box of predefined continents that someone can click on and it will bring up data from that continent.It will work if I let the countries fill the list box from the text file but then if I have two people from England my list box will display England more than once.For example my UN.txt file that is in my debug folder: [code] So I guess I have two different questions: 1. Is there anyway to stop the duplication of the continents as shown above? Can I pre-fill the list box with the continents and not have to fill it from what's in the data file?
View 14 RepliesI am trying to open a text file and read data based on what the user types, but am having problems because of the Input past End of File errors.
View 4 RepliesI have a file in a certain place. I'm making a script with a button in it. For understanding. Let's say the text file has this written in it:
"ABC"
in it, How would I make it if I pushed one of the buttons, it would change that "ABC" to:
"CBA" ' Or anything else random "BCA", "CAB", etc.
and then save it?note I am using Microsoft Visual Studio 2010 so no VB v6.0?
I want to make a program that uses text files (or whatever I choose the extension to be) for settings. I have an example from someone's SVN updater for a game. The following is in customaddons.ini. I want to be able to do something similar. [Code]
View 10 RepliesI use VS 2010 under Windows 7, and I need to extract text that is currently stored in pdf and doc/docx files. Using .NET 4, how can I do this?
View 1 RepliesI have seen a few different ways of Reading/Writing Text files. What i am trying to achieve is a simple debug file in the most efficient way possible. Currently I have....
If System.IO.File.Exists(debugpath) = True Then
Dim Debugwriter As New System.IO.StreamWriter(debugpath, True)
Debugwriter.WriteLine(debugwrite)
Debugwriter.Close()
[code]....
1. Do I have to close and reopen the file each time I want to write to it.
2. In vbscript I would simply open the the file at the start of the script and close at the end is the same possible here.
I know this idea of - if message boxes are used to display error messages inside a .dll and when the .dll is installed in a different computer (possibly a server machine), errors occurring inside that .dll will be shown in the server and not to the user. Since practically there will not be a person near the server to click 'OK' to the error message every time it occurs it will stuck the programs using the .dll.
So how to write exception handling to a .dll project?
I am trying to get a list of files using this line of Dim files() As String = IO.Directory.GetFiles("D:", "*.*", SearchOption.AllDirectories)But it errors out on folders that are inaccessible, like the RecycleBin folder & the program stops. So how do I get a list of files in all folders, while skipping the inaccessible one
View 1 RepliesI have a monster of a problem and don't know where to start. I need to create a simple application that will: have two open file dialog boxeseach file box, one can choose the .txt file to compareonce each box has a file location, click a button that starts. My boss man wants the results saved as :
[Code]....
First it might sound like an ordinary task but keep reading it isn't. I can't figure out how to find a phrase in a text file, and replace it with something else. Tried lots of things but always ending up with empty hands.
Suppose there's a text file in this order:
valueabc=6000.0000
valuettt=200.0000
valuexyz=7000.0000
I want to;
1) Find the phrase (e.g. valueabc) by scanning the whole text,
2) Replace the number that starts after "=" and ends before ".", namely "6000" in the middle with any number value i want.
I don't need the parts before "=" and after ".", only the number in the middle.
I'm working in this application in Visual Basic Studio 2010 I have a combobox where user select phone model and textbox where a text file is loaded when user select model, I added text files to the project resource because I don't want to put them in files in the root directory of my application
[IMG][/IMG]
what I need is a code to make text box load the text file wich have the same name of selected in combobox for example when user selct : CT-810 in combobox the text file with name: CT-810 must be loaded in the text box and so on for other combobox records
I'm trying to implement Bandwidth Total calculation into my little desktop monitoring program using 2 *.txt files. Everything else is working great except for the writing/reading part of it. I had put this together originally without the intention of bandwidth monitoring, but I've decided it would be a good thing to have.I want to have 2 monitoring types: Windows Session Bandwidth Total & All-Time Bandwidth Total (since the program was 1st run on the machine). The counter is on a Timer (2nd of 2), and I want it to write and add the label values each second into the file, then when Form3 is opened, to read the text file and show the results.
View 12 Repliesso I want to make a button in one of my programs that writes text to a file. I know how to do that part. I use:
[Code]...
I am using VS 2010 and I want to read the Text File values and place them into variables. This is my code
Me.OpenFileDialog1.FileName = Nothing
If Me.OpenFileDialog1.ShowDialog = System.Windows.Forms.DialogResult.OK Then
Me.TextBox2.Text = Me.OpenFileDialog1.FileName
filename = Me.TextBox2.Text
End If
[Code] .....
I am unable to move pointer to next line.
Ok, so today I wasted a bit of time looking for ways to use a text file to save login information. Basically, there are two fields, username and password, and two buttons, sign up and log in. When you click the log in button, I want it to verify the information entered in the fields, and when you click sign up, I want it to add the information to the file. It doesn't seem that difficult, but I'm have a lot of trouble finding a way to do it. I would be very grateful if I could find assistance with this on these forums.
P.S. If it was my decision it would obviously be using a database, but for this particular program I need to be using text files.
I currently have a bunch of text files I need to edit in a folder, I need to edit each file and remove the same line but not all files have this line, so I need to create a script that needs to check if the line exists then remove it.I have 1000s of files, that's why I need help to be able to create a script that does it for me instead of me editing each one manually.I am not sure on how to do this, but I am sure it is not difficult for people that have good experience with VB.net.
View 8 RepliesI borrowed part of this routine to download files, and it works great; except when I download text files the returns aren't written into the outputted file. I've tried different web request and techniques with no luck in solving the problem.
Test file:[URL]
Private Sub DownloadFile(ByRef FileSource As String, ByRef FileDestination As string)
Dim request As WebRequest
Dim response As WebResponse
[Code].....
I have some functions written in C that read & write large binary files (> 4 GB) using routines CreateFile, ReadFile, WriteFile & SetFilePointer, that use the HANDLE data type to access the file. Some others who are more familiar with Visual Basic would would like to be able to call my C routines to work with such large binary files. We particularly need SetFilePointer to jump around with the files.
[Code]...
I'm trying to create a "quiz" program in VB. The questions to be asked are placed inside text files and have the following format:
[code]...
> VB thinks that im trying to open a file named, what im trying to do is open a txt file which have a file name similar to the value of integer.
labelQuestion.text = variable.Readline().