Reading A File Size?
May 17, 2010I would like to read a files size.I've looked around in
My.computer.filesysytem.""
there's a lot of file options but I've not had any luck yet.
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Program Hang When Reading 100mb Size Text File
Feb 9, 2009i wrote a program to read a 100mb size text file and loop through it to look for some kind of information I need. Before even i start looping through it, my program hang when i start to read the whole text file using the ReadAll method of the TextStream object. Is there any way that I can read through the whole text file more efficiently?
View 7 RepliesReading Large File Stream In .net (How Can I Increase Buffer Size)?
Mar 3, 2009i need to read a large file stream binary my code is Dim sr As New IO.FileStream(srcFile,
[Code]..
VS 2010 Reading / Loading Controls Size And Location Back From A Txt File
Mar 14, 2011im toying with an idea based round having controls end user movable at runtime, and having a function to save the current position/location of all the controls, so then i can skip through presets i already made as it were. Ill be using .ini files eventually (just testing with txt files to check it was a valid aproach) I can get all the info i need into the txt file, the problem is how to read it back into the app?
[Code]...
Reading Page Size Of Existing PDF?
Jan 6, 2011I need to read PDF Page size of an existing PDF. I have both itextsharp and acrobat used in my project. This is what I've tried.
Dim pagesize As Rectangle
Dim reader As PdfReader = New PdfReader(formfile)
pagesize = reader.GetPageSize(1)
If pagesize.Width = "396" Then
Testing = "Y"
Else
Testing = "N"
End If
I get page size as = {Rectangle: 396x309.6 (rot: 0 degrees)}
And Testing comes out = Y
This seemed great at first, until I found that I get those exact same values regardless of how big the pdf is...so now i'm back to square one not knowing where to turn. Interesting thing to note though When I hover my mouse over reader.GetPageSize(1), nothing shows up while debugging, but pagesize does get the value stated above.
Check Packet Size Of TCP Data Before Reading Next Byte In Stream
May 25, 2009I am sending data to server via TCP IP Connection. I am using a continuous loop at the server end - that accepts new clients and while streams can be read, it reads data stream.
The data is sent from the client with 2 leading bytes of data that represent the size of the packet of data sent and type of data.
My question is: how do I retrieve the size of the data packet and then check that this amount of data has been retrieved?
[Code].....
Check Packet Size Of TCP Data Before Reading Next Byte In Stream?
May 25, 2009I am sending data to server via TCP IP Connection. I am using a continuous loop at the server end - that accepts new clients and while streams can be read, it reads data stream.
The data is sent from the client with 2 leading bytes of data that represent the size of the packet of data sent and type of data.
My question is: how do I retrieve the size of the data packet and then check that this amount of data has been retrieved?[code]...
Set Picturebox Size To Size Of Image File?
Feb 13, 2010Set picturebox size to size of image file?
View 5 RepliesReading, Then Using, Then Reading Text File?
Jan 2, 2010I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader
[code]....
File I/O And Registry :: Binary File Primer - Read The Nth Record Without Reading The Whole File?
May 4, 2009I need to write data to a file, preferably in binary format, but I am unaccustomed with the concept. Where's the easiest place to get the basics? I could come here with a specific need, but I'm at the point right now where I am more willing to work within the confines of keeping it simple.
Here's what I know:
1. how to open a new file
2. how to specify the record length
3. how to close the file
Some specific questions:
Does the record length have to be constant throughout the file?
Can I read the nth record without reading the whole file?
Structures - Fixed Size (Overall Size And Item Size)
Jun 8, 2011Now all went well about from using the structure correctly. The working of the structure was perfect. How ever i missed Two important issues. The structure needed a fixed size of 10 items (9 in programming terms starting from 0) And also out of the 5 items allowed to be chosen as one of the member types for the structure a limit of 5 items of that particular type.
[Code]...
VS 2008 Drag And Drop To Upload File - Find File Size
May 5, 2011Alright 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)
[Code]....
Asp.net - Export To Excel File As .zip To Reduce File Size - Compress Xmldata Before Sending It To The Client?
Jul 8, 2010I 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.
[Code]...
Text - Ensure That A File Has Unique Line If The Size Of The File Is Very Big
Apr 4, 2012Language: 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.
File I/O And Registry :: Reading File Properties Without Loading File
Sep 19, 2010I want to be able to able to read the dimensions of a TIF image without loading the entire file.
PS Using Visual Basic 2008 on Vista64.
Check File Size And Take Backup And Re-create File?
Feb 26, 2011Check file size and take backup and re-create file? I am using this function[code]...
View 4 RepliesGet File Size Of File On Mapped Network Drive?
Aug 11, 2011I 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
VS 2010 - Archive A File Based On File Size?
May 4, 2010I'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 RepliesFile.Move To Rename But File Size Is Gone
Apr 3, 2009When 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 RepliesGet The Size Of A File If File Is Located On A Sever?
Feb 9, 2011How 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 Replies[2008] Get File Size Of A File Which Is On Internet?
Dec 27, 2007in 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.
Perform Two Hashing Operations Concurrently On A Single File Without Reading The File Twice?
May 18, 2011I want to perform two hashing operations concurrently on a single file, without reading the file twice. Is there some way to share the FileStream between two synchronized hashing threads? For example:
Dim Stream As New IO.FileStream("...", IO.FileMode.Open)
Dim HashA, HashB As Byte()
Dim A = New System.Threading.Thread(Sub()
[code]....
Maybe some way of caching a stream? Trouble is, I don't want the entire file in memory at once (it could be many gigabytes in size) and I don't want the file read more than once, due to speed issues. I want the file cached only sufficiently to ensure that both threads can work.For example, suppose at some point in time, thread A had read 100k of the file, but thread B had only read 20k of the file. The portion of the file between 20k and 100k should be cached; but then progressively forgotten as thread B catches up. Then again, if thread B is too slow, we might still end up with hundreds of megabytes being cached.Maybe thread A should be made to wait while thread B catches up. Maybe the ReadByte() function of the stream should block for a while if one of the threads is too far behind?
Reading A Text File Into A Checked List Box Through The Open File Dialog?
Apr 4, 2011I have a checked list box that is populated with the text from a text file. I started off with this code:
Dim FileToLoad As String
FileToLoad = TextBox3.Text
Dim fs As FileStream = New FileStream(FileToLoad, FileMode.Open)
[code].....
File I/O And Registry :: Reading A HTML File And Replacing Certain Parts?
Nov 5, 2010friend of mine has no HTML knowledge so I'm attempting to write a program that replaces certain parts of a html file to suit his needs.I've edited the HTML file and marked certain parts with "tags" like this:
#IMAGEURL1# I have a textbox where he can copy + paste an image URL and hopefully the #IMAGEURL1# is replaced with the contents of the textbox.
So can someone please enlighten me to-as how to open a HTML file (there's no textbox to display the contents just yet, I'll add one if needed), find the specified text and then replace it with whats in a textbox.
File I/O And Registry :: Reading TAB Delimited File Using MS Text Driver
Jun 14, 2011I am trying to import a TAB (NOt comma) delimited text file into a DataGridView. The following code works fine if I have a comma separated file. All I have to do is change the FMT to "Delimited".It just does not work with FMT=TabDelimited. All columns are read into single datatable column. The text file is ANSI text and I have double checked to make sure Tabs are tabs and not spaces, even exported a sample Tab Delimited file from Excel.Can this even be done using Text Driver? [code]
View 2 RepliesPlay A WAV File While The Computer Is Reading Aloud A Text File?
Nov 20, 2010How do I play a WAV file while the computer is reading aloud a text file? It uses Text to Speech synthesis and I need a laughter wav to play when the computer comes across something funny in the line.
View 2 RepliesFile I/O And Registry :: Reading File 2008 Express
Nov 19, 2008I'm new to Visual Basic. I'm trying to get this code to read a .txt file line by line. If the only thing that the line says is "B" it should add one to the intTotalBoys integer and so on with G for Girls, F for Fathers, and M for Mothers. I'm not sure why it won't work. [code]
View 4 RepliesFile I/O And Registry :: Reading From A File And Ignoring Comments?
Oct 28, 2009I would like to read from file, and ignore lines that start with --. I know how to read line by line but i just need to ignore those lines.
View 3 RepliesFile I/O And Registry :: Reading/Writing Objects To File?
Jul 5, 2009So I need to write out an object to a text file as well as read in objects from text files.How do I accomplish this? This is the code i've used to read and write just simple lines of text. Is there a small modification to this or just a different function i use to read in an entire object?
Code:
Dim path As String
path = "Security.txt"
[code].....
File I/O And Registry :: Text File Reading And Writing?
Jul 17, 2010I have just recently been using VB 2010 after using VB5. I have noticed a lot of changes. The problem I have is that I wish to open and save text files to and from arrays in the background. I've attached what I would do in VB5. I have searched around, but all the examples I find use a Textbox instead of an array. Can anyone show me how I can do this with VB 2010?
View 1 Replies