How To Obtain The Value Store In A Byte
Sep 27, 2011
my problem is that is have to create a program in which I enter some text in a text box and then in an other text box it will display the value store in a selected byte. I really don't know where to start. I have a form with three text box and a button. One of the text box to copy o write whatever I want, the other text box to write the number the byte I want to get the value and the last text box to display the value stored in the byte I choose. With the button I will start the function that will get me the value in the byte.
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Mar 14, 2012
I have a language that generally contains serialised data messages in a human-readable format, but some productions within the language contain verbatim raw, binary data.My parser uses String for its buffer since that seems to be the easiest thing to work with. However the data is read from a network socket into an array of Byte.
Now, I'm trying to connect the dots between Byte() and String:
[Code]...
But my data is still mangled. I haven't actually been able to deduce yet precisely how the data is being mangled, but I do know that the length of the data is changing, indicating that the bytes are not being left verbatim.
So how can I obtain a String whose contents are just a verbatim copy of the bytes from my Bytes() input?
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Jan 7, 2012
I really am looking to store two nibbles in a byte and that's not what the text is. I have a character set that uses 0-9, . and ; I need only these plus I'll add an end of data value in case I have a byte whose lhs is a real value but whose rhs is null.Ideally, the compressed and uncompressed targets are both byte arrays.
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Mar 29, 2009
I'm trying to convert old code to VB in VS2005. The code I'm working on is used to store values in a string, which will then be handed to a proprietary scramble function. This function is a given in this case. I've already switched from a string to an array of bytes in my .NET code.
The old code (VBA) was using a string value to store the data, example function for Double value:
Private Function DoubleToStr(ByVal value As Double) As String
Dim Bytes(7) As Byte ' 0-7 Double is 8 bytes
Dim n As Long
CopyMemory(Bytes(0), value, 8)
DoubleToStr = ""
For n = 0 To UBound(Bytes)
DoubleToStr = DoubleToStr & Chr(Bytes(n))
Next n
End Function
The code basically copies the memory contents (using API call CopyMemory) of the memory (held by the double variable) to the memory held by a byte array. It then reads the byte array and converts it into a string. Workarounds could be to convert a bool or long to a string, though that would be expensive in terms of memory/storage eg. 1234564787 would be 10 bytes in a string where as a long is only 4 bytes (factor 2.5 increase).
How to retain the original precision? Converting it to a string would result in endless numbers. Another problem (at least I think it could be) is that in VBA the variables are rather simple, but in .NET they are all objects, so how to retrieve the actual memory location of the value? let alone garbage collection moving stuff around. How to get those variables stored in my byte array?
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Dec 2, 2009
Try to store hex value D9 to byte variable.
Dim x As Byte
x = encText.GetBytes(&HD9)
When Debug.Print for check, answer show hex 83 (decimal 131). Why it cannot store correct hex value?
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Dec 19, 2009
I need to store a calculation to use later and obtain a new calculation
[Code]...
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Aug 7, 2010
Why does C# define Byte+Byte=Int32 instead of Byte+Byte=Byte like VB?
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Mar 22, 2012
I am coding a program that will allow the user to input 5 payrolls for Store 1, Store 2, and Store 3. The total of the 5 payrolls are then added together and shown in the respective Store's labels. A total label is also there to add up all the totals into one number. The numbers in the label must be in currency form. My problem is the numbers don't add correctly when I hit calculate. The first two numbers add together, but then after that the number just seems to subtract a random amount.
So far I have this --
Public Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Me.Close()
End Sub
[CODE[...
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Apr 6, 2011
Objective: Combine byte arrays, read specific sections, and then cut byte array at specified point.
Private Sub DataArrival(ByRef aBot As xyzSocket, ByRef theData As Byte())
Dim RDLength As Int32
If aBot.ReceivedData Is Nothing Then[code]....
I'm not sure if I have this right to begin with because I can't test it without having it completed.
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Dec 18, 2010
I create my algorthm and its finished but there is a problem, it encrypte all text and all text in a file but after decryption when i open my file (a video file)the player show all information about file(duration,size and ect) currectly but it dont play that my program encrypt and decrypt byte by byte and place a asci code in bytes(0 to 255)
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Dec 8, 2009
I just converted the following code from c# to vb.net. It is functional and works correctly with my company's firmware/devices. My next challenge. Previous serialport code used much more readable structs which where then converted (after building a packet) into byte() automatically as part of the serialport encoding. (this is my understanding)How could I
1. morph byte arrays 'ToSocket' and 'ToMTP' below into structs and
2. convert into byte array for Socket.BeginSend(byte(),.....) to stream out to remote devices?
Imports System.ComponentModel
Imports System.Text
Imports System.Net.Sockets
[Code]....
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Jul 13, 2012
how to upload file using fileupload control into sql database. I have class where i created insert function and getting info frm the .aspx.vb file
Class File
========
Imports System
Imports System.Data
Imports System.Data.SqlClient
[coe]....
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May 16, 2011
Is it possible in VB to truncate a larger data type ( an int with a value greater than 255) to a smaller one, say a Byte (which only goes up to 255) in a way such that the 8LSBs of the integer are copied to the newly created byte. I have tried this using CType with the following code, however it does not work.
Dim TestByte As Byte = CType(Test, Byte)
Where the variable "Test" is an integer with a value of 419. This code always results in the Overflow exception.
[code].....
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Sep 20, 2011
I have 2 byte arrays. I want to merge these two byte array into 1 byte array.Usually, I just create a new byte array with length = byte array #1 + byte array #2. Then copy byte array #1 and #2 to the new byte array.do I have more efficient way to merge 2 byte array using VB.NET and .Net 4?
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Mar 30, 2009
I would like to create a function so that I can pass a string and it will return me the binary value, I will use this later in other parts of the script but I am getting an error that I don't understand.
Private Function ConvertToMD5(ByVal OldPassword As String) As Byte
Dim NewPassword As String = ""
'The string we wish to encrypt
[code]....
On the "Return hashedDataBytes I get "Value of type '1-dimensional array of Byte' cannot be converted to 'Byte'"
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Nov 18, 2010
How could you convert a IntPrt to a Byte Array (Byte()) ?
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Jan 25, 2011
I have a byte array that I convert into a string like so Dim byt As Byte() = New Byte(255) {} s = New String(Encoding.ASCII.GetChars(byte))My question is when I look at the string in a debuger its clearly a normal string but when I compare it to what I know its supposed to be it doesnt equal. So i did a quick check and for some reason its return a string thats the length of 256 characters. So i did a s.trim and it still is 256 characters long.
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May 6, 2007
I would like to know how to convert a unisgned byte to signed byte
Atm I got this
a
Function readSignedByte() As SByte
'-128/127
Dim b As SByte
[Code]....
it doesn't work one that well works for numbers positive over 127 if lets say ReadByte() has 128 it would give overflow error which I don't want it to give I would like it to overflow the number to negivate value aka its signed value.
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Oct 2, 2010
given my code below, I'm trying to figure out how to create an array of 1 byte containing 7 bits. So the byte in the array would contain 0111111 to correspond to mData_Out's boolean values. How would I change the following code? [Code]
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Mar 14, 2012
I am trying to write some code to get a kinect for windows sample running, which is originally written in C#. I get stuck with translating the following C# code to VB.NET:
byte intensity = (byte)(~(realDepth >> 4));
What is the VB.NET equivalent for the code above? how to translate the "~" code sign.
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Feb 19, 2009
i know that integer is a variable to store whole numbers and that a string is a varialbe used to store any text, but what variable type would you use to store a number that has decimals?
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Mar 1, 2010
if a byte value can go up to 255 and two bytes are used to determine the length of packet payload data, how would I convert the two bytes to create one integer value?
State.buffer[13] = 5 and State.buffer[14] = 67
Dim PacketLengthHigh As Integer = state.buffer(13)
Dim PacketLengthLow As Integer = state.buffer(14)
[code]....
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Nov 11, 2011
I'm trying to obtain data from a dll, but I do not know how to do it.My code is:
'Function
Public Declare Function SET_XML_PATH Lib "EbmPapstFan.dll" (ByRef ruta As String) As Long
Public Declare Function GET_PRODUCTS Lib "EbmPapstFan.dll" (ByRef ruta As String) As Long
[code]....
This isn't a mistake with the path because Int_A is 0. In addition, GET_PRODUCTS gives me the number of products that software has.The manual say that this function also has string character output.I don't know how obtain this other string character output.
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Mar 15, 2012
How can I obtain the first row value. ex.
Table
ID NAME AGE
1 peter 14
2 Jogn 13
3 Luke 6
If i click peter I will get 1.I can get the clicked value but I do not know how to get the first item in the selected row.
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Jun 25, 2010
I don't understand that error that occurs on the second line of code below. I'm trying to skip over the first 18 bytes of a byte array that I'm accessing from a c# dll into a local vb.net byte array
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Apr 15, 2012
"Create a class called Invoice that a hardware store might use to represent an invoice for an item sold at the store. An Invoice should include four pieces of information as instance variables--a part number (type String), a part description (type String), a quantity of the item being purchased (type Integer) and a price per item (Type Integer). Your class should have a constructor that initialize for each of the four instance variables. Provide a property for each instance variable. If the quantity is not positive it should be set to zero. If the price per item is not positive it should be set to zero."
I attached the code I have. obj is underlined and says "Argument not specified for parameter 'Invoice4' of the 'Public Sub New (Invoice1 As Object, Invoice2 As Object, Invoice3 As Object, Invoice4 As Object)' and so the program won't run. What am I doing wrong?
Public Class Form1
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)
Dim obj1 As New Invoice(Val(TextBox1.Text))
TextBox1.Text &= obj1.Invoice1 & vbNewLine
TextBox1.Text &= obj1.Invoice2 & vbNewLine
TextBox1.Text &= obj1.Invoice3 & vbNewLine
TextBox1.Text &= obj1.Invoice4 & vbNewLine
[CODE]...
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Jan 10, 2012
I am following some instructions that apparently work with vb6, but as i have downloaded the lastest version of visual studio i think its up to version 10.
The code i am trying to make work is,[code..]
I searched a bit for an equivalent.
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Jan 10, 2012
I am following some instructions that apparently work with vb6, but as i have downloaded the lastest version of visual studio i think its up to version 10.[code]The error is that hWnd is not a member of windowsapplication1.form1.
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Dec 14, 2011
I have a general idea of what the code should look like but I can't seem to finish/put it together.I have a year's worth of data such as December 01, 2010 to December 01, 2011.The problem is that there are more than 365 points, some days for example have 3 data points and others have 4, etc..What I would like is to only have 365 points of data by averaging the data points for the days that have multiple points.
[Code]...
- So far I have another column with dates from Dec 1st 2010 to Dec 1st 2011.
- I think I'll need an IF statement for if the whole range of A column equals one of 365 days, it'll equal the average data.
- then I'll need to have a statement for x+1 date for each consequtive day.
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Apr 9, 2012
[code]...
Is there any trick that could give me the first word of the str [code]...
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