C# - Trim Few Bytes Of A Byte Array?
Sep 22, 2011I have a long byte array.I need to eliminate the initial 16 bytes. Is there a shortcut do it?
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.net - Getting 4 Bytes From A Byte Array?
Jan 2, 2010I have a byte array and I need to get 4 bytes from it at a certain location(16) but I don't want to convert it to a integer or anything just keep it as 4 bytes to store in a variable.
View 1 RepliesGetting Certain Bytes From Byte Array?
Jan 2, 2010I have a byte array containing bytes from a file(see my last questionnow I want to get the second lot of 4 bytes from the array and convert them to an integersomething like bytearray.get(4[start],4[length])
View 2 Replies.net - Find Location Of A Short Sequence Of Bytes In Byte Array?
Jan 15, 2011How can I efficiently find the location of the first instance of a four byte sequence within a byte array? Is there something more efficient than looping through the whole array, or a built-in method?
I'm searching through a byte array for a pair of CrLF. I can't convert it to string for an InStr first because I need the position of it in the original byte array.
I am trying to figure out the location of this, as it delimits between a string portion and a binary portion, similar (well, exactly like for this part of it) to an HTTP header. There is a string portion, and two CrLf before the content begins.
MyAlgorithm - Encrypt And Decrypt Byte By Byte And Place A Asci Code In Bytes(0 To 255)
Dec 18, 2010I 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 RepliesVS 2010 Doesn't Trim Get Rid Of Null Bytes In String?
Jun 17, 2010I'm receiving a byte array from a network device by using the TcpClient class and as I have no idea how much data will be being sent I have to just declare a buffer that is X number of bytes long and keep reading into that until I've got all of the data. I then convert this byte array to a string using Text.Encoding.ASCII.GetString but the problem is that this gets any null bytes that were at the end of the buffer after the string and it includes them in the string. This then means when I do String.EndsWith it doesnt work as I would expect it to because there are just loads of 0 bytes at the end of the string.
Once I had realised that was what was happening (which took a long time as these null bytes are completely invisible when you are looking at the data in String form) I thought fine I'll just use Trim on the string but I've found that this doesnt make any difference at all. I thought Trim was supposed to remove any blank space from the start/end of a string, which I assumed would include empty bytes as well.
So is there any alternative I can use that will trim the empty bytes off the end or do I have to do it the 'manual' way and loop through my byte array before converting it to string and remove any null bytes? One thing that has just popped into my head as I'm typing this is to try using the Chr method and pass it 0 and combine that with Trim like so:
Bytearray - How To Trim A Byte()
Jul 8, 2010I am trying to use socket to transfer byte to client. I define Byte(1024) because I am not sure how many character is the server sending! I don't know how many index of this array has been occupied!?
View 1 RepliesRemove Null Bytes From A Byte()?
Jun 27, 2011I have a function that returns a byte(), the only problem is that the array most times is to long and has 4 or 5 excess null bytes. I want to remove them and tried everything, but I cant seem to find anything that works.
View 3 RepliesSwap Bytes - (Byte Ordering In Binary Files MSB-First Vs LSB-First)
May 18, 2010I need to read a binary file. The Byte-Ordering in this file is different from the Intel-Standard. In good old FORTRAN I've used Equivalence-Statement in such cases (For example Defining a 4-Byte-Integer-variable and 4 Bytes at the same memory location / read the file as bytes / store them in the neccessary order / access the memory using the Integer-Variable). In VB dotnet I programmed a solution using shift-operators:
[Code]...
Two Byte Arrays - One Is Temp Buffer And Other Append Bytes Together
Feb 10, 2011The relevant code below is not achieving what I hoped it would. I intend for
1. SerialPortBufferTemp to be used as the container for each Serial Port Read.
2. _buffer should contain the resultant array from two separate Reads, the second appended directly after the first.
(E.g. 60 bytes read on the 2nd Read will be appended to the 168 bytes received on the first Read (228 total resultant byte length))
The problem with my code below is that _buffer has increase in size from 300 bytes to 600 bytes, skipped bytes 168 to 300 (leaving them all zeros) and added the remaining 60 bytes from the second read beginning at _buffer[300].
private List<byte> _buffer = new List<byte>();
byte[] SerialPortBufferTemp = new byte[300];
serialPort1.Read(SerialPortBufferTemp, 0, iBytesRead);
if (iValidRecordCtr == 0) {
_buffer.Clear();
[Code] .....
Convert Java Byte Array To .NEt Byte Array
Mar 24, 2010I 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 RepliesCombine Byte Arrays, Read Specific Sections, And Then Cut Byte Array At Specified Point?
Apr 6, 2011Objective: 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.
Error: Value Of Type Ƈ-dimensional Array Of Byte' Cannot Be Converted To 'Byte'
Jul 13, 2012how 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]....
Most Efficient Way To Merge 2 Byte Arrays Into 1 Byte Array?
Sep 20, 2011I 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 RepliesValue Of Type Ƈ-dimensional Array Of Byte' Cannot Be Converted To 'Byte'
Mar 30, 2009I 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'"
Operator '&' Is Not Defined For Types '1-dimensional Array Of Byte' And '1-dimensional Array Of Byte'.
Feb 26, 2012I 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]......
Read A Raw Byte Array From Any File, And Write That Byte Array Back Into A New File?
Sep 20, 2009How do I read a raw byte array from any file, and write that byte array back into a new file?
View 3 RepliesConvert A IntPrt To Byte Array (Byte())?
Nov 18, 2010How could you convert a IntPrt to a Byte Array (Byte()) ?
View 19 RepliesConvert Byte Array Into A String Like So Dim Byt As Byte()?
Jan 25, 2011I 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 RepliesStuff 8 Bits Into One Byte Of An Array Of Byte
Oct 2, 2010given 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 RepliesHow To Trim An Array In .NET
Nov 17, 2009Say I have an array array<double>^ buffer = gcnew array<double>(100); And I want a function that does something like:
[Code]...
but that don't allocate and/or move &buffer[0] when you want to trim the array.
Trim All Whitespace In An Array
Nov 27, 2009How do I trim all whitespace in an array?[code]
View 2 RepliesC# - Count Occurences In Byte List/array Using Another Byte List/array?
Jun 20, 2011I 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]...
Trim Unused Array Index?
Apr 26, 2009I have some arrays that I don't know the exact number of indexes it will have, but I know the max it will have which is 1024, but let's say only 24 of those are actually used, is it possible to trim off the excess 1000 indexs that are worthless for efficiency purpose (if that even matters)?
View 7 RepliesObject Array To Byte Array - Marshal.AllocHGlobal Fragmentation Query?
Jun 14, 2011I didn't think it fair to post a comment on Fredrik Mörk's answer in this 2 year old post, so I thought I'd just ask it as a new question instead..NB: This is not a critiscm of the answer in any way, I'm simply trying to understand this all before delving into memory management / the marshal class.
In that answer, the function GetByteArray allocates memory to each object within the given array, within a loop.Would the GetByteArray function on the aforementioned post have benefited at all from allocating memory for the total size of the provided array:
Dim arrayBufferPtr = Marshal.AllocHGlobal(Marshal.SizeOf(<arrayElement>) * <array>.Count)
I just wonder if allocating the memory, as shown in the answer, causes any kind of fragmentation? Assuming there may be fragmentation, would there be much of an impact to be concerned with? Would allocating the memory in the way I've shown force you to call IntPtr.ToInt## to obtain pointer offsets from the overall allocation pointer, and therefore force you to check the underlying architecture to ensure the correct method is used*1 or is there a better way? (ToInt32/ToInt64 depending on x86/64?)
*1 I read elsewhere that calling the wrong IntPtr.ToInt## will cause overflow exceptions. What I mean by that statement is would I use:
Dim anOffsetPtr As New IntPtr(arrayBufferPtr.ToInt## + (loopIndex * <arrayElementSize>))
I've read through a few articles on the VB.Net Marshal class and memory allocation; listed below, but if you know fo any other good articles I'm all ears![URL]..
Convert C# Class's Byte Array Values Into Integer Array?
Jun 22, 2010A c# class's single dimension byte array contains socket level instrument sensor data as per:
public static byte[] frameData
VS 2008 : Checking Existence Of Byte Array Inside Another Array?
Jun 2, 2010is there is any direct method or function in array class that can check if any given byte array is a subarray of other array?or should i loop through the each byte of main array to see if smaller array exists in that or not?
View 2 RepliesInitialize Byte Array To Zeros Given A Specified Array Length?
Aug 2, 2011given the following Sub, how would I initialize byte array 'temp'to zeros and give it the length of the incoming byte array passed into the subroutine?
Sub ReceivePacket(ByVal buffer As Byte())
Dim temp() As Byte 'initialize to zeros and length of buffer
temp = buffer.Skip(17).ToArray()
End Sub
Get The CRC Of Array Of Bytes?
Dec 19, 2011I have a simple problem (I think). I would like to get the CRC of this array of bytes
0x0 0x7E or 0 7E or 0
Anyway the one calculator I use gives me: 78F0 or 78 F0 (Hex). Anyway, I think its CRC16 but im not sure. So if anyway can show me some code to give me a CRC calculation that matches (78 F0 or 78F0), that would be great, Im not sure if you have to include 7E or not
C# - Read Bytes Array?
Jan 28, 2010In web service I have function that return bytes array. Now, I call it from VbScript and I need to catch result of this function. How I can catch result of this function in value that is gone be like a value that function return (bytes array)?
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