RAW ASCII File Reader?
Oct 20, 2009looking for a simple example of opening and reading in a loop a raw ascii file 1 character at a time in vb.net?
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Reading ASCII Data From Magnetic Swipe Card Reader?
Sep 27, 2011We have the customers credit card number on file which we use simply to identify them when they swipe at our computer. The problem i'm running into is that when they swipe their card in the card reader (Magtek mini usb) it outputs the data as ASCII which looks something like %B followed by the credit card number in whatever textbox i have the program focused on. I'm sure i could just search the textbox for any 16 character number string and assume that is their card number, but i was just curious if there is some best practice to decript the ASCII output from the magnetic card reader.
View 1 RepliesFile I/O And Registry :: Stream Reader I/O - Saves The File With No Crlf's For When Use Reader
Sep 24, 2008how would I accomplish saving a large piece of data, using the Stream Reader for the Line-by-Line, while keeping the carriage return line feeds in there?
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.net - Microsoft.VisualBasic.FileIO.TextFieldParser Changes ± Ascii 241 To ? Ascii 63?
Dec 11, 2010I am using Microsoft.VisualBasic.Fileio.TextFieldParser to parse a CSV file that was created with Excel 2003. The parser is working great with the exception that it is converting extended ascii values to question marks! So if the file content was:
± 3
The TextFieldParser is returning
? 3
I have tried all of the encodings in the System.Text.Encoding package with no luck. I thought I had it with UTF7 but it was dropping other characters like replacing the + sign with a space.
Converting An ASCII 6-bit String To 8-Bit ASCII Characters?
May 9, 2011I'm working on decoding a NMEA sentence that is a compressed 8-bit string. I'm having a very hard time of wrapping my head around the bit manipulation needed to convert this string. If someone could get me started with this it would be great.
Here is the incomming string:
!AIVDM,1,1,,A,14eG;o@034o8sd<L9i:a;WF>062D,0*7D
and here is the expected output:
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File Access - When Open The File With Something Like Notepad, It Shows Random Ascii Chars?
Oct 19, 2011Years ago when coding with VB6 and earlier, I used a file open command to create, read, and write a file that made it easy to store useful information.I believe it was binary and you wrote/read the data to a specific line in the file. When you opened the file with something like notepad, it just showed random ascii chars. When I needed a line of data, I could specify what line to load it from.
View 2 RepliesLaunch An Application Called Foxit Reader Pdf Reader?
May 18, 2011I want to launch a application called Foxit Reader pdf Reader .I know System.Diagnostics.Process.Start(path) can do it but . Requirements are Foxit Reader should be installed on machine.Now if it is installed how to serarch for the path of its Executable to provide the parameter as I can not hardcode the path for different machines.
View 3 RepliesWhat Is The 'whitespace' ASCII Or Unicode Character In System.Text.Encoding.ASCII.GetBytes (whitespace)
Nov 4, 2009I would like to pass a whitespace character by using the System.Text.Encoding.ASCII.GetBytes(" "), and System.Text.Encoding.Unicode.GetBytes(" ") , where " " is the whitespace Character required. What do I need to type (" ") to get a whitespace character passed.?
View 6 Replies.net - Convert A File To Ascii?
Aug 29, 2010This has been driving me crazy for two weeks! I just started learning Vb.net, so please forgive me if I make rookie mistakes. Basically, I would like to convert any type of file to Ascii code. An mp3, .wav, .avi etc. The most I was able to do is convert only the first character of the file to Ascii. Also, I'm not sure what would be the fastest method to do this. SteamReader, FileStream, or BinaryReader. Can anyone explain what method would be best? This is what I have so far:
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Take A Static Stream Reader And Switch It To Another Text File Based On The User Changing The File?
Mar 10, 2010Is there anyway to take a static stream reader, and switch it to another text file based on the user changing the file?
View 1 RepliesAsp.net - Character Support - Translate Higher ASCII Characters To Lower ASCII Characters?
Aug 7, 2009So I have an ASP.Net (vb.net) application. It has a textbox and the user is pasting text from Microsoft Word into it. So things like the long dash (charcode 150) are coming through as input. Other examples would be the smart quotes or accented characters. In my app I'm encoding them in xml and passing that to the database as an xml parameter to a sql stored procedure. It gets inserted in the database just as the user entered it.
The problem is the app that reads this data doesn't like these characters. So I need to translate them into the lower ascii (7bit I think) character set. How do I do that? How do I determine what encoding they are in so I can do something like the following. And would just requesting the ASCII equivalent translate them intelligently or do I have to write some code for that?
Also maybe it might be easier to solve this problem in the web page to begin with. When you copy the selection of characters from Word it puts several formats in the clipboard. The straight text one is the one I want. Is there a way to have the html textbox get that text when the user pastes into it? Do I have to set the encoding of the web page somehow?
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Convert ASCII Txt File To XML Within .NET, C# Or Javascript?
Aug 16, 2011I'm not exactly sure if this is the correct question to be asked but I will tell you what I am attempting. I have an ASCII txt file with product data in it. It does not have headers. I am looking for a way to convert this data into an XML file, however, I want it to parse through one of the txt fields to incorporate a look-up field and modify the data based on that field. Now I could use VB.NET, C# or Javascript. Example provided:
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Save An ASCII-file With A Dll In Vista?
Nov 22, 2010I've created a simple dll with VB.NET for a web application, which opens a SaveDialog and write some ASCII-signs to a txt-file. It is working fine in XP. But when I test this dll in Vista I can not save this file:When I try to save in the directory "My own files" I can see this file in the file dialog, but I can not see this file in the explorer. In other directories I get a permission error.I've red, thatI can give e.g. admin-permission to allow writing a file, but I can give this permission only to an exe-file.
I tried some tests with the filestream like below
Dim fs As FileStream = New FileStream(strCSVDateiName, FileMode.Create, FileAccess.Write, FileShare.ReadWrite)
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VS 2010 Determine If A File Is Ascii Or Not
Sep 9, 2011Is there a way I can determine if a file is an ascii type vs a binary type without making a list of file extensions to check against?
View 3 RepliesVS 2010 Working With A ASCII File
Apr 18, 2012This time I've to work with a file which inside is like this:url...I'd like to edit the highlighted part of text: "CustAssetSeen-803981731[NUL][STX][NUL][NUL][NUL]1"If the file was a normal text file I wouldn't have any problems, but I don't know how to work with this kind of file.
View 14 RepliesWrite ASCII Character Into A File?
Jan 6, 2009I want to write the ASCII code chr(192) into a file but I dont know am I right.Is the function like this chr(192) or something different because it doesn't write the character 192 in the file. Or can someone tell me how to write something into a file using ASCII codes?
View 8 RepliesPrinting A PDF Using FoxIt Reader Or Adobe Reader?
Feb 28, 2012I am having an issue with both Adobe Reader and FoxIt Reader when trying to print a PDF document. Both issues are different but a solution to either one will allow me to fix my issue.The issue I am having with Adobe Reader when trying to print using the following code is that it will not print it to the network printer I specify but just the default printer.
Dim AdobeReader As New Process
AdobeReader.StartInfo.CreateNoWindow = False
AdobeReader.StartInfo.Verb = "print"
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File I/O And Registry :: Binary Reader For File Header?
Oct 23, 2011however, I am stuck at BinaryReader.actually this is what i am trying to acheive through VB.NET.say for the following file type :
JPG file = FF D8 FF E0
BMP file = 42 4D BE 4E
PNG file = 89 50 4E 47
GIF file = 47 49 46 38
the above are the 4-byte headers in Hex(raw) I need to read these headers of any given file using OpenFileDialog using Button1_click event,on selection of any given file(*.* filters ON)it should use the BinaryReader and look for only 4-bytes starting from offset 0, and it should not go to EOF marker (-1).and have a variable to hold this 4-byte header value, to run this in a database table which will check the same header value in the table and would display the corresponding extension of the file. from the table.
I can do this using case, if then...etc.however, I have to do it using Database and also i need to check for testing purpose to use MsgBox() to display this variable which is holding the 4-byte header.however, the MsgBox doesnt allow anything other than String.
PS: I tried studying the methods like:
FileOpen/Seek/Peek/ReadBytes().
but still not sure how to get them work.
ASCII Text Formatting - TextBox To File?
Oct 22, 2010So I'm using a plain TextBox to display output from an ongoing background process. I've created a 'report string' that displays in my textbox like it has 3 columns; there's a VariableName, a VariableValue, and a VariableEffect (showing how applying that variable to the process affected it).In my textbox, any VariableValue entry that has 17 or greater characters gets 1 tabstop between Value and Effect; any entry 16 or less gets 2 tabstops, and any value 7 or less gets 3 tabstops which very neatly lines up the 3 columns.
View 5 RepliesDetermining If A File Is Text/ASCII Char Only?
Jan 26, 2012Simple question, what would be the optimum code in VB2010 to read in a text file and verify that:1) It is a text file, and2) There are no non-ASCII characters anywhereAnd conversely, we would want the code to provide a warning if the file is not a text file, or if the text file contains non-ASCII characters. [Note that LF, CR and EOF are expected to be in the text file, and should not be flagged as errors]
View 1 RepliesIO.File.ReadAllLines ANSI Characters (ASCII > 127)?
Feb 14, 2012I'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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VS 2008 Reading Ascii Txt File Into Array And Writing It?
Jan 3, 2010I'm reading a txt file into an array and then writing a new file one line at a time. The reason i'm using array is that i'm searching for a few lines that i want to find and replace.
However in my file I have some ascii characters but they aren't read well. I read something about System.Text.Encoding.Default but I don't know how to implement it in my code.
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Memory Leak In File Reader
Nov 19, 2009I'm currently coding a file reader for fixed-width tables in VB, and the compiled application seems to be sucking down memory like there's no tomorrow. I'm working with a series of ~50 megabyte files, but after running through several, the process starts taking up about 200+ megabytes of RAM, which is way more than it should.I've done some poking around, and I think the issue is the call to NewRow(), but don't take my word for it. Does anyone have some tips for optimizing this? If the problem's with the NewRow() call, is there a way of clearing this out? [code]
View 1 RepliesOLE File Property Reader 2.1 Availability
Sep 17, 2010A colleague of mine is interested in getting the Microsoft Developer Support OLE File Property Reader 2.1 Sample (KB 224351) from the numerous download sites. I was wondering if DsoFileSetup_KB224351_x86.exe is available on any of the MSDN disks or is included with the installation of any Microsoft oftware/applcations from our MSDN subscription. He needs to put it on a private network and downloading exe files is not an option.
View 2 RepliesStream Reader To Read .txt File
May 16, 2009Radio button 2 beacuse there are 3 and you have to pick one (The right one) to advance on to the next form.
View 4 RepliesCounting Columns In ASCII Text File To Enter Data Into An Array
Nov 21, 2009I am using visual basic 2008 and trying to create an application to plot data from text files. I have several data files of various sizes. They have an unknown number of rows and either 2 or 4 columns.I need to put the data into 2 dimensional array, so value(,) becomes either value(lines,3) or value(lines,1) depending on the number of columns.My program needs to be able to count how many columns there are, and redim value(,) appropriately.I have written a piece of code to count the number of lines (rows) in the file using 'While not (EOF(1)) ....' but I'm stuck on how to count the number of columns.I could ask the user to indicate how many columns there are before the file is read, but I would prefer the program to detect the number automatically.
View 1 RepliesVS 2005 Read A Text File, Insert A Line Of Ascii Commands Between?
Jun 16, 2009it is a normal text file, I would read it then , (This part I got it) print it out to a reciept printer, send insert ascii code to force the printer to cut the recipt.
View 2 RepliesApplication That Reads A XML File Via A Stream Reader?
Jun 24, 2010I've got an application that reads a XML file via a stream reader. The problem is I can't edit my XML file and save it when others are using the application that is using the XML file at the time. how can i get around this?
View 1 RepliesFile Format With Application In To Web Browser Like PDF Reader?
Jun 15, 2009I am developing an application like a pdf reader to read my own file. I want to open it into web browser like PDF reader do for pdf files.
View 9 RepliesRead Text File Through Stream Reader?
Apr 30, 2012I have a text file name list.txt which contains data like following;
AC-No. Name Time State New State Exception
100 ZULFIQUAR 09/04/2012 01:53 PM C/In Invalid
100 ZULFIQUAR 10/04/2012 01:39 PM C/In Invalid
100 ZULFIQUAR 11/04/2012 01:38 PM C/In Invalid
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