I need to read and process a text file. My processing would be easier if I could use the File.ReadAllLines method but I'm not sure what is the maximum size of the file that could be read with this method without reading by chunks. I understand that the file size depends on the computer memory. But are still there any recommendations for an average machine?
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Returns whole lines, the odd occasion a word. any thing obvious wrong?
Private _word As String()
Private _i As New Random
Private Sub btnGetNewhangManWord_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
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I am using "For Each S As String In IO.File.ReadAllLines(filetoUse)" to read a file. how acn use EOF with IO.File?
View 2 RepliesIm trying to use File.ReadAllLines to read a DLL that has plain text. (the DLL is basically a text file)
Dim NewFile As New StreamWriter(Application.StartupPath & "NewFile.DLL")
File.ReadAllLines(Application.StartupPath & "NewFile.DLL")
I get 1 error, and I have a few questions
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I'm using IO.File.ReadAllLines(FileName) to read all lines from text file to array of strings at once. Problem is, text lines include ANSI characters above ASCII value 127 (Scandinavian letters e.g. " (Ascii 196), (Ascii 246) and (Ascii 233). Array is build up nicely, but all chars above ascii value 127 are not shown right. How can I use ANSI character set with .ReadAllLines to correct this problem? In VB6 with "Open Filename For Input As #1 / Line Input #1, txtLine" there wasn't any problem. OBS: This is already solved, found the answer by myself:
Dim myEncoding As Encoding = System.Text.Encoding.GetEncoding(1252) ' Windows-1252
Dim strLibrary As String() = IO.File.ReadAllLines(FileName, myEncoding)
Problem was to find right character set, which was Windows-1251 (ISO-8859-1)
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In this readalllines part because my data is saved differently now it used to be like this
CODE:
But now i saved it in a single and more understandable line like this
CODE:
And i have afew ideas like using the split function and stuff to read the months but can i use the "|" and "," in the line at the same time? the first 3 section of the line is for user to know the year, month and day of the starting date of the chinese lunar year. and the following 1,30 is the first month with 30days.
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Im trying to use File.ReadAllLines to read a DLL that has plain text. (the DLL is basically a text file) [code] The process cannot access the file '****DebugNewFile.DLL' because it is being used by another process.How do I use readalllines to find text? How do I use readalllines to only search a part of the text file?
View 4 RepliesI'm using IO.File.ReadAllLines(FileName) to read all lines from text file to array of strings at once. Problem is, text lines include ANSI characters above ASCII value 127 (Scandinavian letters e.g. "Ä" (Ascii 196), "ö" (Ascii 246) and "é" (Ascii 233). Array is build up nicely, but all chars above ascii value 127 are not shown right. How can I use ANSI character set with .ReadAllLines to correct this problem? In VB6 with "Open Filename For Input As #1 / Line Input #1, txtLine" there wasn't any problem.
View 1 RepliesI have a text file (CSV) approx 100k lines (8Mb). I want to search the entire file for a particular string eg, "apple" and for all lines containing the string to be printed in a text box. have successfully done this using streamReader to parse the CSV and check each element against the search word eg. apple. This has proven to be very very slow and I have read that the "ReadAllLines" method is much faster.
View 8 RepliesSay I have a 5 GB file. I want to split it in the following way.
First 100 MB is on the file
The rest go some reserve file
I do not want to use readalllines kind of function because it's too slow for large files.
I do not want to read the whole file to the memory. I want the program to handle only a medium chunk of data at a time.
Alright here's my situation: I have a form. This is a very small form that can be moved with the mouse (formborderstyle=none). The transparencyKey is 0,0,1. The form back color is 0,0,1. There is a label on the form. I drag files to this label(its backcolor is black[0,0,0]). What I want is for the filesize to be checked. I already have the uploading to ftpcode, I just want to know if the file is above my limit I set. (250mb per file)
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I like to compress the xmldata before the data is provided to the client as an excel file. I am trying to compress and deliver it as a .zip file. its not working Here's my code below. I tried compressing it, converting it to bytes etc etc. The issue with below code is, the XSL transformation is not happening properly and the output excel file is raw xml with some .net exception at the end. (that's what I see on the .xls file that's downloaded at the end) Before I started working on compression my below code was working fine that gives properly formatted excel file from the xml input. the excel file is so nice you can't even tell it was from XML.
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Language: vb.net
File size: 1GB, and stuff.
Encoding of the text file: UTF8 (so each character is represented by different numbers of bytes).
Collation: UnicodeCI (when several characters are essentially the same, the most popular version will be the one unique.). I think I know how to handle t his one.
Because each character is represented by different numbers of bytes and each line has different numbers of characters, the number of bytes in each line also vary.
I suppose we have to compute hash for each line. We also need to store buffers location where the line each. Then we have to compare buffers. Then we will check whether the same line shows up or not.
Check file size and take backup and re-create file? I am using this function[code]...
View 4 RepliesI was using the following code to check the file size of a data file on my local machine. Now the data files have been moved to a mapped network drive and this code no longer works. What do I need to change or how do I access file size on a mapped drive?
Dim MyFile As New FileInfo(MyFilePath)
Dim FileSize As Long = MyFile.Length
I'm working on a school project right now and I have everything fine except this one part of the project: "The audit and errorevent logs should be archived if they are larger than 5K and up you need to keep up to 3 copies of the files." I know how to read and write text files just fine, so I don't need help with that. What I don't know is how to archive a file based on file size, or how to keep up to 3 copies of the files?
View 2 RepliesSet picturebox size to size of image file?
View 5 RepliesWhen I rename the file, what happens is that both files stay there, but the renamed file is 0KB and the original that is still there is 14KB[code]...
View 9 RepliesHow can I get the size of a file in MB if the file is located on a server? If the file is on a computer I would do this:[code]......
View 5 Repliesin my application i want the size of the file which is located on internet
for example: [URL]..how will i be able to get the file size of the above mentioned url.
I got no clue how I can check the file size of some file. I would like to be able to determine the size of example. "C: estfile.txt". How can I do this in VB08?
View 3 RepliesI want to create an application where a user can create a file which is a certain file size. e.g. Two textboxes, one for Name of file and one for file size. When submit button is pressed, a file is generated from the textbox information. Here is what I have got so far:
Imports System.IO
Module Module1
Sub Main()
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However this code is only for text files. I want users to be able to specify a file extension. The file doesn't need to work, it just needs to have a certain file size and a certain name. e.g. I can use this application to create the file Song1.mp3 which is 4567kb. It won't play because it is not a valid mp3 file which is fine, it doesn't have to.
I'm trying to get the file size of a csv data file to help me estimate the number of lines in it to use with a progress bar.
View 2 RepliesIn Form1 i have a Textbox1, in this textbox i have the loaction of a file "C:folderfile.iso" In the Form2 i want to get the file size of the file in Textbox1 so i tried this
Dim fileDetail As IO.FileInfo
fileDetail = My.Computer.FileSystem.GetFileInfo(Form1.Textbox1.Text)
Label1.Text = Size: fileDetail.Length
End Sub
I dont get an error, but the size of the file isn't showed in the label.Edit: This doesnt seem to work
Private Sub Unscramble_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If System.IO.File.Exists(Form1.TextBox2.Text) Then
Dim fi As New System.IO.FileInfo(Form1.TextBox2.Text)
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It still doesnt give me the size of the file nor it gives the "Size:"
Does anyone know how I can get the number of bytes in a file on a webserver? Without downloading the file.I have code to download a file, but I cant get the size of the file I'm downloading...
View 2 RepliesI have a problem, i try to open a file, then i open the file, i want to get the size of the file and write in to a ListBox. So if i have a file : 123,00 kb so then i push the button Ok then get the size of the file and write the size into the Listbox.
Cant some one here tell me how i doit, i have try and try, but its not work for me.
Here its my code.:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim alleAttr As Long
If System.IO.File.Exists(lblfilnavn.Text) Then
lstAttr.Items.Clear()
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I have a piece of code that does work correctly to get the size of an http file, but it doesn't work on ftp. This is the code (it is in a backgroundworker):
Try
Dim webReq As Net.WebRequest = CType(Net.WebRequest.Create(THE_URL), Net.WebRequest)
Dim webResp As Net.WebResponse = CType(webReq.GetResponse, Net.WebResponse)
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I (SQL Server DBA) have inherited a VB App, being called in a TSQL Script, that creates a PDF using the Crystal reports. Until a month , PDF was being generated with correct extension and size, but for some unknown reason the app creates a non PDF file with Zero size. Interestingly the script that calls the App and send the PDF created as an attachment in an email via MS Outlook, sends it as PDF with data.
Also when trying to open up the same 0KB file in Acrobat, gives an error:
"Could not open because it is either not a supported file type or the file has been damaged (for example it was sent as an email attachment and wasn't correctly decoded)"
FYI, the Exchange server was upgraded so the email isn't working either and its causing a great pain for management to not to be able to have that report.
Is there a correct way to getting the file size when uploading an image with ASPxUploadControl? When the file is uploaded I would like to show the file size. So far I've not found out any sample code on how to do it via Google.
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Is there a correct way to getting the file size when uploading an image with SPxUploadControl? When the file is uploaded I would like to show the file size. So far I've not found out any sample code on how to do it via Google.My current code:
VB.NET
<dxuc:ASPxUploadControl ID="ASPxUploadControl1" runat="server" ShowProgressPanel="True"
ClientInstanceName="CompanyLogoUpload" FileUploadMode="OnPageLoad" ValidationSettings-
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