I've tried searching for this, but most people just want to convert hex values into their ASCII equivalents. That's not what I am looking to do.I'm looking to see if VB.NET has a simple built-in function to do this:
Private Function NibbleToString(ByVal Nibble As Byte) As String
Dim retval As String = String.Empty
Select Case Nibble[code]....
Is there a more elegant way to accomplish the same thing as that code?
I'm using this code to return some string from a tcpclient but when the string comes back it has a leading " character in it. I'm trying to remove it but the Len() function is reading the number of bytes instead of the string itself. How can I alter this to give me the length of the string as I would normally use it and not of the array underlying the string itself?
Dim bytes(tcpClient.ReceiveBufferSize) As Byte
networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
' Output the data received from the host to the console.'
[code]....
Len() reports the number of bytes not the number of characters in the string.
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]...
I realize this might be a redundant post, but I can't seem to find (through all the searches) the code to do what I need to do...or it's just not working for me.
I have an Intel hex file (containing ASCII characters) such as :041400000262F5226D
I need to convert the values to hex numbers into memory (an array), such as
[code...]
I'm not sure of the proper combination of conversions I need to get this accomplished. I've tried several combinations of Val/Asc/ etc. but can't get it correct.
How do I use key_down event in my vb.net?It is so sucking I have seen so many codes on google but none of them working I dont understand where its going wrong
[Code]...
2) can anyone post a sample of these "a textbox that allows only numbers from user using key_down"
3) I see people using e.keychar but in my vb.net(2008) I dont have that keyword I guess e.keycode must be used is that right? or e.keyvalue?
4) I see e.keycode = keys.A but I need to accept 'a' not "A" How do I specify a number or letter with their ascii value ?
Would it be possible to convert strings to ASCII and subtract a number from each at the source, then add a number at the receiving end? I am sending messages on a LAN network (hopefully) and I know the packets may be monitored so I want to make sure they at least can't be read just by opening the data, something simple will do.
View 3 RepliesI am having a bit of trouble converting a single stored in a string as four hex values. I believe my problem stems from some Unicode hex values not matching the corresponding ASCII hex value above 0x7F (127). For example, I have the following single stored in a string; "518.42" or 0x44019AE1. The char that would contain 0x9A if the data type were ASCII contains U+0161 which will not convert properly to a byte array. My question is: Is there any way to force a string to be of ASCII rather than Unicode? Or maybe there are other recommendations? For reference I have tried both of the following. The first throws a format exception and the second converts to the wrong single.
Private Function ConvertHexToSingle(ByVal hexValue As String) As Single
Try
Dim iInputIndex As Integer = 0
Dim iOutputIndex As Integer = 0
[code].....
I'm trying to convert an ASCII String to hex for VB 2008. So far I have this :
Code:
Function asc2hex(ByVal StrName As String) As String
Dim loopCount As Integer, strHold As String
For loopCount = 1 To Len(StrName)
strHold = strHold & Hex(Asc(Mid(StrName, loopCount, 1)))
Next loopCount
asc2hex = MsgBox(strHold)
End Function
However, It is not reporting all the bytes that it should be. For example: This is the correct format.
[Code]...
I need some thought input on how I can take my string of HEX values and convert them to ASCII according to the specifications below: A function would be ideal since I need to quickly decode about 250 records all having 20 thresholds to record.[code]
View 14 RepliesI 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.
I have lines of text that contain "degree symbols" (ASCII(248)). I want to replace those symbols with an alphabet character (Z).I am changing the line of text into a charArray,iterating through one character at a time. How do I define the ASCII(248) in code to replace each occurence with a Z? Something like string.Replace(ASCII(248), "Z") would be nice, but that doesn't seem to work too well.
View 4 Repliesway to convert byte array to ascii string?
View 3 RepliesWhat do i need to do to convert a recieved byte from Ascii to String, so i could display it properly on a textbox?
View 16 RepliesI'm programming in VB.NET using Visual Studio 2008. I need to define a string literal containing the character "÷" equivalent to Chr(247). I understand that internally VS uses UTF-16 encoding, but when the source file is written to disk it contains the single byte value F7 for this character.
This source file is processed by another program that uses UTF-8 encoding by default, so it fails to interpret this character correctly, attempting to combine it with the following single-byte character. What encoding would correctly interpret the single byte F7 as the single character ÷?
Alternatively, is there a way of expressing a non-ASCII literal that uses only ASCII characters - like using some kind of escape sequence?
This illustrates a series of bytes that I've received from a socket and assigned into a byte array (frameData). How do I extract the ascii string from frameData if FrameData.Length is 79 bytes long and I need to extract the byte locations whose begin -frameData(26) and end frameData(44) are given by the arrows I've drawn?
View 3 RepliesI have a code for converting characters to it's ASCII-value. I want to display this in a textBox, but when I stuff it into a ForLoop VB says that the Index is outside the bounds of the array... if I take the L-1 (see code below) I miss the first character...
Private Sub btnRecieve_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs
) Handles btnRecieve.Click
[code].....
How would I copy/convert a string containing an ascii representation of hex values in to a byte array containing the actual hex values? For example, I have a variable containing the hex values delimited by spaces (I can change the delimiter):
[Code]...
If we have a string that contains for example "01_1A" in ascii, I would like to take first two chars and following two chars after mark and send it as hex format, like &H1 and &H1A.
Note that I would not convert ascii to hex. I am asking for something like &H(var).
How to correctly convert string containing upper ASCII characters to byte array besides looping through each character and filling the array using AscW(chr)?I know I can do something like:
Code:
Dim bSourceData As Byte() = System.Text.ASCIIEncoding.GetBytes(sourcedata)
But this only works for lower ascii characters (0-127).Instead of ASCIIEncoding I can specify encoding myself (System.Text.Encoding.Getencoding(encoding).GetBytes(sourcedata)). But I have to specify correct encoding in this case, otherwise most of special characters are converted to "?". What should I do if I don't know the encoding?
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.
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.?
View 6 RepliesSo 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]...
I created a listbox using VB.NET. When the user select an item (it is a string format) in the listbox and click on a button, there will be a number beside the string and the number will increment which time the button is clicked. Anyone know how to do it...?Below is the coding I'd done, but I don't know how to do the increment part. Anyone know what coding I need to add?
Dim no As Integer = 0
listBox.Items.Add(listBox.SelectedItem & no)
I'd like to convert a string which contains a decimal number into string that contains the binary value, the octal and the hexadecimal value of that decimal number.Afterwards I also like to convert a string containing a binary, octal and hexd. number into a decimal string.Basically I'm looking for the functions:
dec2bin
dec2oct
dec2hex
bin2dec
oct2dec
hex2dec
I'd not prefer to rewrite a function, I'm sure the framework must have these functions already.
How can I do for converting 3 in "three". Or converting for example 153 in "one hundred fifthy tree"
View 7 RepliesI am trying to get a number into a cell but as a string not a number. For example if I have the number as '12345678901234' instead of putting that exact number in it changes it to ' 1.23457E+13 '. How do I get it to read it as a string and not an integer? Here is the code that I am using.
Dim
num As String
If pRow.IsProjectNumNull = False Then
[Code].....
How do I count the number of times that a string appears in another string. I know this code:
If odocument.ToString.Contains("window.alert") Then
pops = pops + 1
End If
But that will just see if the desired string contains "window.Alert" once, rather than how many times it does contain it.
I would like to get number from a string eg: My123number gives 123Similarly varchar(32) gives 32 etc
View 5 Repliesi 1 2 get number from string.
Ex: gsgfsg23sd ==> 23
sdfgdsf23dsf432 ==> 23432
How to get a line number that contains a specified string in a text file?
Example text file contains:
Red
White
Yellow
Green
How to get "Yellow" line number? and can i write a string in a specified line, lets say i want to write a string in line 2?