VS 2005 How To Get Byte CRC
Nov 16, 2010I am doing application to transfer Byte array from one application to another. This will be sent by 256 bytes byte. For this I need to calculate the CRC for error checking.
View 12 RepliesI am doing application to transfer Byte array from one application to another. This will be sent by 256 bytes byte. For this I need to calculate the CRC for error checking.
View 12 RepliesWhy does C# define Byte+Byte=Int32 instead of Byte+Byte=Byte like VB?
View 1 RepliesI'm writing a byte array to a file, but I want to prepend a string onto it. I'm not sure how. Here is my
Dim myString As String = "Header Text"
oFileStream = New System.IO.FileStream("output.txt", System.IO.FileMode.Create)
oFileStream.Write(barrCrypt, 0, barrCrypt.Length - 1)
barrCrypt contains the ByteArray. The contents of it will be stored in output.txt. How can I make myString show up as the first entry in output.txt, prepended to barrCrypt?
I am storing images in a database. When I call the function to get a picture it returns an array of system.byte[]. How do I convert this to an image?I've searched for information, and found this page among others. But the code given doesn't work for me.
'Byte[] to image
imgMemoryStream = New IO.MemoryStream(imgByteArray)
myImage = Drawing.Image.FromStream(imgMemoryStream)
[code].....
I have a database that stores images as bytes, per Here
What I want to do is bind the image of a picture box to that value through my binding source. This is what I have:
ProductImagePictureBox.DataBindings.Add("Image", productBindingSource, "productImage", True)
And nothing ever shows up. I figure it's because I am not doing something like Image.FromStream(), but I also don't know how to integrate something like that into that line. I could just re do the image box on row enter rather than bind, but I don't know how to manually pull the data from the binder.
I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.[code]
View 6 RepliesI have a simple byte array: Dim TheBuffer() As Byte={0,1,2,3} and I want to store it to a TEXT file. Is there any simple way of doing this? I want to enter the text file and see the array 0,1,2,3. don't want binary format etc.
View 3 RepliesObjective: 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.
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)
View 12 RepliesI 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]....
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]....
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].....
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?
View 2 RepliesI 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'"
How could you convert a IntPrt to a Byte Array (Byte()) ?
View 19 RepliesI 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.
View 1 RepliesI 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.
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]
View 8 RepliesI 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.
Im looking for a method to parse incoming byte arrays. The code i use now for recieving is:
[Code]...
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]....
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
View 3 RepliesI am trying to Convert a data field stored as IMAGE ( SQL Server 2000) using Java to a byte array using VB.NET Java uses signed numbers for a Byte array where as VB dosent. Can somone point me to how I can covert java byte array to VB byte array?
View 2 Repliesi have a table in sql server with some fields set as Byte() (System.Byte[]) when i import them in my application to be used with linq they are converted in Binary (System.Data.Linq.Binary)why is that?is there a way to prevent this wrong translaton???if i update the database how can i update the classes that has been craeted in visual studio2008?
View 2 RepliesI have 9 1-dimensional arrays of bytes and 1 of them is empty, I want to make the empty one equal to the others put together like you would a string:
Dim bla As String = "bla" & "bla" & "bla"
'now bla = "blablabla"
but instead:
[Code]......
How do I read a raw byte array from any file, and write that byte array back into a new file?
View 3 RepliesI am trying to get a count of all the times a byte sequences occurs in another byte sequences. It cannot however re-use a bytes if it already counted them. For example given the string let's assume the byte sequence was k.k it would then find only 3 occurrences rather than 5 because they would be broke down like: [k.k].[k.k].[k.k]. and not like [k.[k].[k].[k].[k].k] where they over lap and essentially just shift 2 to the right.
Ideally the idea is to get an idea how a compression dictionary or run time encoding might look. so the goal would be to get down to just 2 parts, as (k.k.k.) is the biggest and best symbol you can have.
Here is source so far:
[Code]...
Value type "Byte" cannot be converted into "1-dimensional array of byte"Does anyone know what is missing?
Option Strict On
Private Function MySQLDataReader_GetByte(ByVal Connection As MySqlConnection, ByVal CommandText As String, ByVal Column As String) As Byte()
[code].....
Dim bteJustTheAddress As Byte bteJustTheAddress = RawData(2) And &H7F
RawData is a Byte Array and I know &H7F is the Hex 7F
I have the following code in VB.net Dim bytIV() As Byte = {121, 241, 10, 1, 132, 74, 11, 39, 255, 91, 45, 78, 14, 211, 22, 62} I'm trying to convert it to php. $iv = array(121, 241, 10, 1, 132, 74, 11, 39, 255, 91, 45, 78, 14, 211, 22, 62);
[Code]...