I have a pretty stupid problem I've done a simple string encoding function but I'm having some trouble to decode it again
Encoding Function
Private Sub Encrypt(ByVal EncString As String, ByVal blnStatus As Boolean)
If blnStatus = True Then
[code]......
Is there an easy way to encode and decode xml file so that it can only be read with a program that knows how to decrypt it.Basically i want to encode xml file and have a program that reads it.here is the code that is reading it now. thnx to .paul i learned how to read xml the link to that topic is How to read and sort xml
Quote:
vb
Public Class Form1
Dim ds As New DataSet
[code]....
I'm having problems decoding a file with "ISO-8859-1" encoding.For example, I can't decode "%E7" to "ç".
View 1 RepliesI'm using some functions which can be compared to encoding/decoding, but it's a really simple and basic application, not really an encoding function.The problem is, the decoding function doesn't seem to work. For some reason, it doesn't work correctly, and I'm a bit stressed, so even after searching for a while, I can't seem to find it.[code]
View 2 RepliesI 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]....
I'm having difficulty decoding text in a VB GridView. Currently I have the following code:[code]But the text in "view" mode is still HTML encoded while in "edit" mode they are decoded.How do I get it so it is decoded in both modes?
View 1 Repliessymbol is put into my code, it is meant to be decoded as a /And when I put a % symbol into my code, it is meant to be decoded as a :I am using regex to do thisHere is my code to decode the coded adress (no pun intended):
Dim info As IO.FileInfo
Try
Dim SelectedLstItem As String
[code].....
I am writing some rest calls to the LinkedIn API using web request and have hit an encoding issue.The LinkedIn API takes requires an encoded URI as one of the parameters on the lookup i am trying to run.
We are calling the api through .Net's WebRequest.Create; and when we pass in the URI it decodes it and as a result we can't get the data from the call. Im trying to open a URI like this[URL]..Is there a mechanism in the webrequest class to stop it decoding the passed in URI; or a work around for this?
I am using the method described in the following LINK and I am using the following code to encrypt:
'Page1.aspx
Protected Sub butEncrypt_Click(sender As Object, e As EventArgs) Handles butEncrypt.Click
Dim QueryString As String = "type=Int&pk=" & _primaryKey
QueryString = Tools.encryptQueryString(QueryString)
Response.Redirect(/SearchResults.aspx?Val=" & QueryString)
End Sub
and then finally de-encrypt:
[Code]...
I have a file from the client which is a text file. I have to decode the file to a graphical representation. Is there any way I can do it?
View 16 RepliesI need to work with Decoding so that I can Increase/Modify a String Value from 32 entries to 75 entries, and to include the corresponding checkboxes also.
View 14 RepliesI'm getting the following error when decoding a creation date:A first chance exception of type 'System.ArgumentOutOfRangeException'occurred in mscorlib.dll Hour, Minute, and Second parameters describe an un-representable DateTime.
I'm doing pdfdate.decode(xdoc.info("creationdate"))
Here's the info from the PDF file:
/CreationDate (D:191010319150120)
/Producer (Acrobat Distiller Daemon 3.01 for Solaris 2.3 and later
(SPARC))
/Creator (tif_convert_2_ps())
/Title (/tardir/tiffs/a386689.tiff)
/ModDate (D:20010320070957)
The Modification date seems to be a valid date, but, the creation date looks kinda weird to me. More intriguing is that when I get the properties of this file using ADOBE Reader it shows a valid date for the creation date field.
implement the huffman decoding algorithm
View 1 Replies1.Converting a wav file to mp3
2.Create a mp3 player by use of a decoder for playing this mp3 file.
I want some help from the best audio programmer who can explain me the decoding logic used to play the mp3 file(Programatically) I am aware of the bit patterns and the data chunks of mp3.I have the knowledge of the data chunks used in mp3 and wav files .I have also used winmm.dll file earlier to ascend into and descend out of the data chunks of wave files.But don't know how the bits are played in a player.Now I need to convert the wav file into mp3 format by use of some encoder program.I came to know about some lame encoder program but am unable to get how to start understanding it's code.
I am trying to write a thread safe application that contains 3 threads : -
1 - Data acquisition and decoding
2- Data graphing
3 - FFT and filtering
Thread 1 is collecting bytes from the serial port and converting them int integers (so taking two bytes) after is has captured 64 Bytes and converted into 32 integers, it then needs to pass the array to the graphing thread.
The graphing thread then plots the data and waits for more data.
Thread 3 also waits until thread one has collected 2023 integers and takes these and performs some FFT calculations (which take time).
My question is how do i share the arrays between the three threads without deadlocking the program? as the serial thread will be flying around reasonable fast (1000 bytes per second) so it will synclock onto the shared buffers for most of the time.
Originally i was going to use two synchronised queues, so when thread 1 has collected 32 bytes it queues the data into the graph queue, and once it has collected 2023 it queues the data into the FFT queue.
Then thread 2 and 3 can simple dequeue the data.
However using queues has the overhead of casting the data in and out, and as i know the data type i was planning on using two arrays :-
Dim GraphArray() as ushort
Dim FFTArray() as ushort
Then Thread 1 adds data to each thread, and thread 2 and 3 simple wait until the correct amount of data is available before removing the data. my question is there an array type that allows me to remove x amount of data from an array?
Because i cannot do this easily with the ararys defined as above (GraphArray, FFTArray), as i was planning on making them 1mByte and allowing thread 1 to fill them Knowing they should never overflow and then let thread 2 and 3 remove x amout of bytes at a time unless there is a better way of doing it
So, imagine I have a RichTextBox control and a few buttons to allow the user to change the font size, set/unset bold, italic etc, and perhaps change the colour. Not much more than that. Can I then - in code - loop through the contents of the RichTextBox and determine which words are in bold or red or whatever, and where paragraphs start and end?
View 9 Repliesurl...we get the encoded as alphapet base64..i want to talk as low level programming what will happen or this data how it will represent as binary and send it is it encoded again as ascii to binary or there is another idea.
View 12 RepliesI have done very little with encoding of Text. Truthfully, I don't really even know what it means exactly.
For example, if I have something like:
CODE:
Is that 'encoded' in memory in a particular format? Does that format depend on what language I'm using?
If I were in another country, like China, for example, and I had a string of Chinese (mandarin? My apologies if I'm using the wrong words here) would the following code (that I've used fine on English strings) still work the same?
CODE:
Or would it lose all meaning when you convert that .Net string to a UTF8Encoding when that conversion isn't valid?
Finally, I've worked with .Net for a few years now and I've never seen, heard, or had to do anything with Encoding. Am I the exception, or is it not a common thing to do?
this is a continuation from the root cause of the problem exposed in this other thread. I'm starting a new thread with a different topic name because I think it is not related to the other thread's topic (which was encryptioto enumerate them.Anyway, we found out that some characters become changed from what their original byte value was, when you put them into a textbox.The specific characters are as follows:Unicode char
View 5 RepliesI want to make an numerical integration method with takes in an analytic function and integrate it over a specific interval. For the numerical integration procedure I want to use some procedures in nr.com. The problem is that these are programmed in C++ and they uses functors to pass a function to the integration method. How can I do this in VB 2010?
I want to initialize the function (i.e. set a=1,b=0 for function y(x)=a*x+b) and then pass the function to the integration method. Then when the integration method call the function it only calls the function with one parameter (i.e. x since a,b is already set)
What is the best way to do this in VB2010?I want to make a general integration method where I can pass any single valued function and integration limits.
I have just started using VB, and from what I have found so far it seems like the tools you have is
- to us a delegate for the function
- to use a lambda expression for the function
- send a pointer/adressOf
- to create a function class/structure and submit this to the function
As for now I am most inclined to create a function-class. But I am not really sure how.F.ex. I make different classes for each "uniqe function" I want to integrate, but how can I pass them to the integration function when I need to specify the argument type in the integration-function-call?This seems like a basic problem which applies to many Math operations, so I think it would be very useful to clarify this.
I'm using this code to convert string to ISO8859-1
[code..]
But the problem is when an user writes this caracter:
EXAMPLE:
[code...]
I think that my code is wrong. Because if I send the same string encoded "price+80%2BVAT", Why in VB.NET code not runs and in PHP runs fine? Is the same encoded string.
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?
I have a simple question about string. Consider following code:
Dim S1 as String = "abc"
What is the encoding for S1? Is that UTF-8 or depending on user windows local setting?
I am writing a little project to parse a CSS file, and base64 encode all the background images.While I am able to parse the CSS correctly, it seems that everytime I try to convert the image file into a base64Encoded string, the string returned is always exactly the same.Please assume that all image paths are passing correctly to the method. In this instance, all images are fully qualified urls, so the first section of the method is what is doing the conversion.[code]
View 2 Repliesi have a task to create ,read,update xml file this file have encoding UTF-16. when i create using vb.net ,i am using xmltextwriter. i cannot find encoding UTF-16. it is only have UTF8,UTF7,UTF32. that's don't have UTF16.that's anyone have clue or link to guide me create,read,update file xml with encoding UTF-16??
Imports System.Xml
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim writer As New XmlTextWriter("product.xml", System.Text.Encoding.UTF8)
writer.WriteStartDocument(True)
[Code]...
I would like to know the way a stream or a string is encoded before converting it. If a string is not utf-8 it would be converted to utf-8.
View 1 RepliesWe know a tolower function will turn all A to a How to turn all à to a.The purpose is I am creating ids for databases and id need to be unique. Sometimes the same stores are written as à in one place and as a on other places. This will create duplicate id problem.So I need a function that will turn all à and all of it's variation into a. The same way ě should become e.
Basically I would use utf8_unicode collation on my databases. Letters that count as the same letter under that collation should map to the same character under this function.I need to make sure that all other east asian characers are not affected in anyway.
I have a challange to convert the detected Encoding format of Text file to selected Encoding format. Like if the detected file is in Utf-8 and if user want to convert the encoding to Utf-16 or ANCII or Unicode. It will happen on one button click and the file will convert to the desired output encoding format.
Right Now I am able to detect the encoding but conversion not happening.
I have an application that collects a signature on a handheld device, saves the data as a byte array and transmits it to the pc. This came originally from a sample from MS. The sample works fine.In my case I am sending this signature back to the pc where it is received by a VB6 application and stuffed into a database and then there is a dot net program that can or should be able to pull that data and reproduce the image.
Due to certian characters that may appear in the data such as ' " Null and such I run a little replacement routine on the data before I save it on the device and run the reverse before I try to rebuild the image. This also seems to be working.
Now if I save the data as a file on the device and load that file into my viewer the sig shows up just fine. It works with both the file that has had the replacements done as well as the one which has not. However when I transfer the data via my vb 6 application the sig is then distorted when viewed.
I have written the data to file as it comes into the pc and again after it has been parsed and in both cases it does not match what was actually in the file on the device that is being sent and I can not for the life of me figure out what is going on here.
Code:
sBytes = Encoding.Default.GetBytes(DataString)
bSent = wSocket.Send(sBytes)
Code:
Winsock1(Index).GetData strData, vbString
When I compare the file created on the handheld device with the one created ont he pc from the data received it gets odd. In text mode both files look alike even with the terminal font enabled but in binary mode they are different.The first noticable difference in Hex View is a ways into the first line the file from the handheld device has C3 A0 but the file written on the pc has E0 instead from there on all bytes are shifted by 1 yet when I look at it in text view no bytes are shifted and the character displayed where C3 A0 is in one and E0 in the other is the same accented a character.
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.
View 1 Replies