Character Encoding - Converting UTF-8 To ASCII?
Feb 20, 2009
I am writing a console application, which reads emails from different email boxes and processes through them. Emails are received from various automated systems. The email messages are logged and/or sent forward.
The problem is that some emails are encoded in UTF-8 and transfer-encoded in quoted-printable which messes up special characters (mainly ä,ö and å). I have not found any solution to convert them in readable format.
For example "ä" in quoted-printable is "=C3=A4". Using a normal conversion methods the result is "ä" (gibberish).
I shamelessly ripped this example conversion table from here: [URL]
[Code].....
So how do I get the real codepoint from UTF-8 value? I'd rather not use any external libraries. Besides I've tried a couple already and they failed.
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Nov 4, 2009
I 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.?
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Oct 28, 2009
I am sending a DDE message to a client using System.Text.Encoding.ASCII.GetBytes(item) . However, before the message is actually sent, I would like to get the message coded where if the item="Ask" then item=Ask (string variable) and so on. The code is:
Protected Overrides Function OnRequest(ByVal conversation As DdeConversation, ByVal item As String, ByVal format As Integer) As RequestResult
' Return data to the client only if the format is CF_TEXT
[code]....
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May 9, 2011
I'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:
[code]...
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Mar 26, 2011
i got a problem when receiving data from networkstream that was converted from bytes to string.. the output would be the same but when i compare the the string generated from Encoding.ASCII.GetString() compared to the actual string, the output is not the same..
This is my code..
Server:
CODE:
Client:
CODE:
just for ping purposes.. :)
my server pings to client..is there any instance that when the string will be converted to bytes, the string will change?
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Dec 9, 2010
I'm using this to write to a text file[code]..
but i need to change the encoding from the default. how do i change the default encoding to ASCII?
system.text.encoding?
everything in outputText is written as a string and then concatenated into outputText.
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Aug 7, 2009
So 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?
[Code]...
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Jul 15, 2011
I have a value I am pulling into a string that looks like this:
M'arta
I need to have it to translate the numeric value into an actual value so that the string looks like this:
M'arta
how to accomplish this in VB.NET? Here is the relevant line of code that returns this result:
Dim occupant as String = GridView1.Rows(e.RowIndex).Cells(2).Text
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Jun 16, 2010
I have a byte array that I'm encoding to a string:[code]Then I write that to a file via IO.File.AppendAllText.If I open that file in 010 Editor (to view the binary data) it displays as this:47 43 44 53 79 73 74 65 6D 73 3F 0A 01 32 31 36..The original byte array contained 89 at position 11, and the encoded string contains 3F.If I change my encoding to Encoding.Default.GetString, it gives me:47 43 44 53 79 73 74 65 6D 73 E2 80 B0 0A 01 32 31 36.
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Jun 8, 2011
Using VB.NET in Visual Studio 2010, I have two files:
"test2.aspx" and "test2.aspx.vb".
The aspx file is basically as follows:
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="test2.aspx.vb" Inherits="App_test2" %>
<html>
<head>[code].....
Is there something I can do so the source code doesn't escape characters like "&", "'", "<", and ">" ?
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Dec 24, 2010
I am doing some url redirections in a project that I am currently working on. I am new to web development and was wondering what the best practise was to remove any illegal path characters, such as ' ? etc.I'm hoping I don't have to resort to manually replacing each character with their encoded urls.
I have tried UrlEncode and HTMLEncode, but UrlEncode doesn't cater for the ? and HTMLEncode doesn't cater for '
E.G. If I was to use the following:
Dim name As String = "Dave's gone, why?"
Dim url As String = String.Format("~/books/{0}/{1}/default.aspx", bookID, name)
Response.Redirect(url)
I've tried wrapping url like this:
Dim encodedUrl As String = Server.UrlEncode(url)
And
Dim encodedUrl As String = Server.HTMLEncode(url)
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Dec 10, 2011
I know how to convert a character to ascii Asc("E") = 65 How do I reverse the process? ie change 65 to E?
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Aug 3, 2009
So far so good... In asp we have the HttpUtility.UrlEncodeIs there any equivelant in vb.netI tried importing the system.web without any luck... yet
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Jun 27, 2011
I am developing, in VB.Net, an application that reads from text files using a FileStream Object. I do not use a StreamReader, since the buffering it does makes it impossible to use Seek.hose text files form a database, with both index and data files. In index files, all fields are fixed-length, which is not the case in data files.I've recently run into a problem. Since some of my files contain accents, the corresponding characters take more that 1 Byte. Therefore, when I seek in the index file, and offset appears the rest of my index file is not read in the right way
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Feb 20, 2012
I was wondering how to implement a custom character set for use by an application, i.e. hex bytes that are read by the program then converted and displayed in the window. If this requires first converting the bytes in a file to an already implemented character set, I'm cool with it - I'll go with whatever works or works best. I'm writing with VB.NET 2010, and running Windows 7 Home Premium x64, by the way.
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Dec 2, 2009
I have problems sending sms using API. I need to sens sms encoded ISO-8859 The problem is encoding to ISO. Not runs
[Code]...
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Jul 13, 2011
I want to re-produce the equivilent of the DowArrow sign on a VB2010 Form label. label1.Text = Chr(ConsoleKey.DownArrow) doesn't work. The nearest character seems to be ASCII DEC 30 value., which will do fine, but Is there anyway I can reproduce this char on my form label, using one line of code, viz- label1.text =
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Jan 6, 2009
I 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?
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Sep 16, 2009
The reply buffer is in ASCII value...but I need is HEX value.Is there any way that the reply buffer is in hex?
Code:
Public Function read_write_string(ByVal devicehandle, ByVal command, ByVal commandlenght) As String
Dim inputReportBuffer(100) As Byte
unManagedBuffer = Marshal.AllocHGlobal(inputReportBuffer.Length)
[code]....
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Sep 1, 2011
I'm Alan and I'm writing a little program (beginner), but I'm stuck and I can't get any further. So I hope one of you guys can help me solve following problem.Let me explain what I'm making, so it can give you all a better perspective.
For a this project I'm receiving data via the RS232 communication port. So basically I receive bytes. These bytes are converted to a string. So for example I receive this:"BAA" this is good because I can get the correct decimal value for "B"(66) and "A"(65) using the command asc("A") in .NET.but sometimes I receive a character that exceeds the 0-127 limit for example ""(128) (please see [URL]..But now when I try to get the decimal value of "" I get 63 instead of 128. I searched the Internet and forums for an answer but I didn't find one that fits my problem.
So if it's possible, can one of you code experts explain me how to fix this problem ? It would help me a lot. I hope I described my problem clearly, but if there are some questions,
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Apr 24, 2009
I want to explicitly inform my user that they are not allowed to use any characters from the extended ascii character set (128-255). When I try to create a string of these values using the following [Code] It outputs them fine, with the exception of a bunch of blanks in certain areas(I am assuming these characters are unprintable), but I noticed that when I hover over the value of sVal in the VS, the tooltip/quickview of the value is written nicely on one line. Any ideas how to remove characters that would appear to be blank spaces (unprintable) when outputting this list?
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Jan 15, 2010
I am receiving hex values for my step through debugging when I go over an integer. For instance if i have an integer of 1 it will show &H1, How can I get it to show the ascii character form instead of hex?
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Mar 9, 2009
reading special characters within my VB code. ASCII code Char(34) = " works fine but Char(60) = < and Char(62) = > are not being read.
My Code
node.FirstChild.InnerText = Chr(60) & "httpRuntime executionTimeout=" & Chr(34) & "999999" & Chr(34) & " maxRequestLength=" & Chr(34) & "2097151" & Chr(34) & "/" & Chr(62)
[Code].....
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Sep 16, 2009
I found this function from the net. But I have a problem with the reply buffer. The reply buffer is in ASCII value...but I need is HEX value. Is there any way that the reply buffer is in hex?
[Code]...
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Aug 11, 2009
What do i need to do to convert a recieved byte from Ascii to String, so i could display it properly on a textbox?
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Jan 5, 2009
I am working on a client/server based application and I have run into quite a few snags stumbling my way through I have resolved quite a few issues, and need help with something new. I am using a TCPIP client/server and I find that at the end of each loop when I am reading the data from the network stream it appends a character to the end. I have tried removing the last character but I am not sure if it is getting the whole character successfully because I still get lots of different errors both in binary and xml deserialization whcih I think is related to this. Does anyone know the ascii code for the termination character for TCPServer/Client communications?
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Apr 19, 2011
I am working on a text-based game and as your character moves, you get informations such as the room name and below, a description (Lorem ipsum in the example) which is an array of string. I would like to know how to append characters to it. I am actually trying to display a minimap made of ASCII character. See the second bloc code for an example.
From:
code:
Into:
Room Name Here
code;
The game itself is made in VB.NET but a solution in pseudo-code is also welcomed. Also, each line's length is aproximatively the maximum length it must be.
The desired output must be an array of strings because this data is later send to a client connected using sockets.
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Sep 28, 2010
I can't seem to find how to recast a char to Ascii, the VB6 way was to ASC(thechar/thestring).What is the new method? or how to perform the recast while converting to a byte so it will fit and not buffer overrun.
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Feb 14, 2012
I have a program written in VB.NET and I have a textbox for the RFID tag (which is in ASCII format) and then convert it to a simple text format to be saved to my database. How can I convert ASCII to plain text to save to my database?
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Nov 21, 2010
The latest assignment from my teacher was to create a console program where the user enters a character and the respective ASCII value in Denary, Hexadecimal and Binary, Even Parity, Odd Parity and Hamming code is returned.I've managed to implement all of them except the latter with relative ease, I am familiar with the concept of Hamming code and can compute it easily by hand, but don't really know how to implement it as a function in my program. [code]
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