Getting Extra HEX Bytes When Concatenating Data Files?
Aug 8, 2009
I'm concatenating data files, but the problem is that I'm seeing some extra bytes where the files are joined. The new file has extra bytes. I had thought this was maybe a problem with encoding.Here are the methods that I've tried to use to concatenate the files. The first example I'm getting extra 0xA0 0x00 bytes.
Dim inputfiles() As String = Directory.GetFiles(sourcedir, pattern)
Dim bufSize As Integer = 1024 * 64
Dim buf As Byte() = New Byte(bufSize) {}
[code].....
View 4 Replies
ADVERTISEMENT
Mar 3, 2012
I'm just getting started with Visual Studio (2005), and my aim is to write a fairly simple application in Visual Basic that will need to store some data to disk.What I really want is to be able to send the application to the end users (xp, vista, win7) and have them just be able to use it without having down download all kinds of extras. For example I'm guessing that if I use an SQL database in my application they will need to download SQl server express or some other sql downloadable?
If so is there a similar downloadable for MS Access?I'm just in the 'seeing how things work' stage at the moment and I don't want to waste time going down the SQL track just to find it won't actually work unless my users all download SQL to their machines (which they won't want to do).
View 4 Replies
Dec 28, 2009
I need to :
Read data from a file. The file contains the location and file name of a file and the name to which I want to save as (about 27,000). Then I need to Open the File with PDF Pro 9 and save as pdf in a specific loaction with the new name. Where to find some samples of reading, parsing and concatenating data and running a program from within a script?
View 8 Replies
May 8, 2011
So my program works off a few templates in a folder called "Templates".So far, i have been deploying my program as though it would run from a CD. Deleting the autorun file, inserting the Templates folder myself, and then using a self extracting ZIP to make it easy for the user to install.While this works, i would like to make it easier on myself by just including the Templates folder and the two template files (both .xls files) in the program every time i deploy.I've tried dragging and dropping the folder + files into my solution explorer bin folder but it doesn't work.I'm using Visual Basic 2010 Express.
View 1 Replies
Jul 17, 2010
I created a simple BMI calculator through the guide.I have built it and published it on my laptop running Vista Home Premium with .net 3.5 SP1 installed.I can run the setup and subsequent exe file fine on my machine but when I try it on my girlfriends netbook (one of those fiddly little things) it wont install saying that some of the files are missing. It is running XP and also has .net 3.5 SP1 on it.There are only 2 extra files in addidtion to the setup.exe that vb 2008 creates and they are the application manifest and the program icon, both of which are located with the setup.exe but it still won't install. It is an offline installation but won't run.I copied the bin folder from the project to the setup folder and tried that, still no joy, yet if I try and run the actual program directly it works?
View 16 Replies
Sep 25, 2009
When my program is installed, I need to place a folder in the directory path of "C:\" in order my program to work. How do I include the folder in my project, and then durning the install Place the folder where it needs to be? Could someone be so kind as to point me in right direction to read up on something like this?
View 3 Replies
Dec 9, 2009
How can i store unlimited multi-row strings without the need of extra files?Example: the user enter a multi-row string into a textbox and clicks save. Then the program should save that somewhere. And then the user enters another string and clicks save. And then there is a combobox where it can choose between those 2 strings to load.Can i save them in some sort of collection like My.Settings.Collection? Where each text also has a header.
View 5 Replies
Dec 4, 2009
I can download files from a website, and i am using:
Try
My.Computer.Network.DownloadFile(Download Path, Destination Path, "", "", False, 60 * 1000, True, FileIO.UICancelOption.DoNothing)[code]....
And, when i do try downloading some files, they come as empty.They do download, and the folder has the succeeded files, and some files are empty..Is there a way to check if that folder has 0 byte files, and if it does, delete the files that are 0 bytes, OR delete the folder if whole folder is 0 byte..
View 4 Replies
Jan 29, 2010
I use this function to convert file to bytes array:
Public Function ConvertToBytes(ByVal path As String) As Byte()
Dim _tempByte() As Byte = Nothing
If String.IsNullOrEmpty(path) = True Then
Throw New ArgumentNullException("File not exist", path )
Return Nothing
End If
[Code]...
View 1 Replies
Oct 4, 2011
I need to do some operations that require converting array of bytes to string and the other way. After struggling with it for a few hours I found out the core of my problems. Look at this piece of [code]...
View 5 Replies
May 26, 2011
I have an application that is sending data to another system. every thing is ok, but after my 1st varible I get extra characters in the buffer. my code is something like
Private Sub Reg_ClientInfo()
With My_Reg
.ID = 710
.AppName = "DS;"
[code]....
View 6 Replies
May 18, 2010
I need to read a binary file. The Byte-Ordering in this file is different from the Intel-Standard. In good old FORTRAN I've used Equivalence-Statement in such cases (For example Defining a 4-Byte-Integer-variable and 4 Bytes at the same memory location / read the file as bytes / store them in the neccessary order / access the memory using the Integer-Variable). In VB dotnet I programmed a solution using shift-operators:
[Code]...
View 8 Replies
Nov 29, 2009
I am reading data from a socket (as bytes) and storing this data in a string. Then later i need to access specific bytes within the string and do some math with them. However the bytes that I read back from the string are not what I am expecting.
[Code]...
View 2 Replies
Dec 22, 2010
Some printers aren't actually printers e.g. CutePDF, PDF995 etc are printer drivers that "print" PDF files, and the built in fax support for Windows is through a printer driver that "prints" to the fax modem.
Both PDF and fax need a little bit more information than a normal print job - PDF needs a filename, Fax needs a phone number. Usually there is a pop-up dialog that prompts the user for the extra information.
Is there any way to set this information programmatically?
There is a property Printing.PrintDocument.PrinterSettings.PrintFileName but this only seems to work when Printing.PrintDocument.PrinterSettings.PrintToFile is set to TRUE, which is not the case in these situations (even though a PDF printer writes a file, it is not "save print job to file" in the normal sense).
View 1 Replies
Nov 13, 2010
I want it to do is that you input a string, then you select an algorithm (Theres only going to be one RijnDael) then you input a key, then the Initialization Vector comes from "txtIV.text" then you select the key bytes and the block bytes from the numeric up/down, then you either encrypt or decrypt.
View 1 Replies
Sep 16, 2011
Ok i am having some issues designing a base-class to handle generics.Caveat is i need to restrict the type put in as a Numeric type, specifically Int16, Int32, or Int64 (Short or Long).I know you can do Of T as {Structure} but i dont want to select the key bytes and the block bytes from the numeric up/down.
View 2 Replies
Feb 19, 2011
I keep getting a ProtocolViolationException "Bytes to be written to the stream exceed the Content-Length bytes size specified." on the following code.I've tried setting Content-Length numerous ways with no success.
Dim url = "https://domain.com"
Dim req As WebRequest = WebRequest.Create(url)
req.Method = "POST"
req.ContentType = "application/xml"
[Code]...
View 1 Replies
Dec 28, 2010
What exactly does this line do?
i = stream.Read(bytes, 0, bytes.Length)
Does it read the entire message string sent by the client? I have a line to write to the stream later in the code and that does not seem to be sending anything back to the client, although the code around is excuting.
i = stream.Read(bytes, 0, bytes.Length)
While (i <> 0)
Try
' Translate data bytes to a ASCII string.
[code].....
View 3 Replies
Sep 22, 2011
I created a text file contains 4 bytes of data
AABBCCDD
I just want to read the first 2 bytes (AABB) to execute it with my program.
Then I'll need to read the last 2 bytes (CCDD) for another computer routines
View 3 Replies
Oct 21, 2009
I have some questions about arrays.
1) Lets say I open a file in a byte array and I need to add 5 bytes of data at the beginning. How would I go in doing that? ex: attaching to arrays together.
2) How would I go in adding 1 byte of data in a bye array?
All i need to do is open part of a file in bytes. Add a letter and 2 numbers to it at the begging and a number at the end.All i need to know is how to attach 2 byte arrays together and how can u add a byte of data to an array.
View 7 Replies
Apr 9, 2009
I've just switched my code over that downloads data as bytes to use a WebClient. I add a header saying I will accept GZip and the site I'm downloading from sends me the data compressed. The problem is, how can I check to make sure it is compressed data before attempting to decompress it? It was much simpler when I was using a Web Request to check the response headers, but I'm having a little trouble checking the reponse headers with a WebClient. Does anybody out there accept compression with a WebClient?
View 1 Replies
Nov 25, 2009
ust want to ask if its possible for me to measure how many bytes of data does a device sent to my computer using vb.net?
View 3 Replies
Aug 22, 2011
my goal is to
1.Take an file(exe,dll,etc)
2.Convert it into hex
3.place that hex values in a stack
4.Execute the values inside the stack to its original form(i.e. take the elements out of stack and then convert it to a compile format)
Imports System.IO
Sub Main()
Dim fileName As String = "ABC.exe"
[code]....
View 1 Replies
Aug 2, 2009
Probably missing something silly here, Her eis what my display looks like Sending image...(401303) I would prefer it displays as Sending image...(391 kb)
[Code]...
View 7 Replies
Mar 25, 2012
I am concatenating a variable onto a path(string), i'm using a message box to display this for testing purposes, I can see that the variable is starting on a new line, which in turn when i try to open the file it doesn't recognize that the file exist...
Dim Path As String = "C:UsersstefanDesktopUni WorkYear 4ProjectsProject SelectionProjectProjectinDebug"
Shapetext = clickedShapes.Item(nextShape).Text.ToString.Substring(0, clickedShapes.Item(nextShape).Text.IndexOf(" "))
MsgBox(Path + Shapetext + ".txt")
View 2 Replies
Apr 7, 2011
This code works if I take out
" " + p.MIDDLE_NAME
Thus the remaining code looks like:
p.FIRST_NAME + " " + p.LAST_NAME
Maybe LINQ-to-Entities just doesn't support concatenating more than two strings at a time?
Protected Sub btnFilter_Click(sender As Object, e As EventArgs) Handles btnFilter.Click
Dim dbContext As Campus6Entities = New Campus6Entities
[Code]....
View 1 Replies
Aug 14, 2011
Is it possible to use 'Tab Stops' when you're concatenating (say) a Label text? I know it can be done for a PrintLine statement but I'm, trying without success, to put tabs after the colons in this code. ( "...... :" & vbTab ...)
Label1.Text = "Width margins:" & a.ToString & " Pixels." & vbCrLf
Label1.Text += "Height margins:" & b.ToString & " Pixels" & vbCrLf
Label1.Text += "Top margin:" & c.ToString & " Pixels" & vbCrLf
Label1.Text += "Bottom margin:" & d.ToString & " Pixels" & vbCrLf
Poppa.
View 9 Replies
Feb 14, 2011
I have a textbox "myTextbox" and a listbox "myList" which shows a list of strings e.g "AAA", "BBB", "CCCC".When the user clicks on an item from the listbox the text must be appended to the end of whatever is in myTextbox with a space preceeding it. e.g " AAA".The user must never be allowed to delete the added text.The user must be allowed to manually enter text in the textbox but it must always be in front of the added text. They must never be allowed to type over the added text or after the added text.I have been trying to get my head around this for a day now and cannot figure it out.
View 7 Replies
Apr 25, 2010
The following works in reading from my SQL Server table:
Dim CMD As New SqlCommand
CMD.Connection = conn
CMD.CommandText = "SELECT tblPersons.id, "
CMD.CommandText = CMD.CommandText & "CASE "
[Code]...
View 2 Replies
Nov 12, 2010
I have some code that splits a session into strings by a -
My session looks something like this 123-456-789- and I split it like this
Dim MyString As String() = Session("MySession").Split("-"C)
And i've got a some code like this
Dim x as Integer
For x = 0 to MyString - 1
Response.write("Ref: " & MyString(x) & "<br>")
Next
This writes the code like this
Ref: 123
Ref: 456
Ref: 789
Ref:
So it's adding an extra Ref where it shouldn't be because there is no data after the last -
Is there a way to stop this adding in the extra one?
View 1 Replies
