VS 2008 Pass BYTE Array Reference To C++ DLL From .NET?

Mar 9, 2010

C++ DLL MiFare.h has

MIFAREAPI_API unsinged short MIFAREAPICC MF_ReadCardBlock( DWORD dwBlkAdr, DWORD dwRdrKey, DWORD dwKeyAB, DWORD dwRspBufSz, BYTE *pRspBuf );

my decalre in VB is

<DllImport("MifareAPI.dll")> _
Private Shared Function MF_ReadCardBlock(ByVal BlkAdr As ULong, _
ByVal RdrKey As ULong, _

[code]....

but i can't get the correct data?

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Office Automation :: Null Reference Exception On A Byte Array

Dec 28, 2011

I've converted an application for connecting to a vpn server and starting a remote desktop connection from vb6 to vb.net. But now when I'm trying to run the program I get an ArgumentNullException I've tried searching for a solution but I've been unable to find one. Below is my code:

[Code]...

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VS 2008 : Checking Existence Of Byte Array Inside Another Array?

Jun 2, 2010

is 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?

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Convert Java Byte Array To .NEt Byte Array

Mar 24, 2010

I 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?

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Combine Byte Arrays, Read Specific Sections, And Then Cut Byte Array At Specified Point?

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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Error: Value Of Type Ƈ-dimensional Array Of Byte' Cannot Be Converted To 'Byte'

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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Most Efficient Way To Merge 2 Byte Arrays Into 1 Byte Array?

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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Value Of Type Ƈ-dimensional Array Of Byte' Cannot Be Converted To 'Byte'

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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VS 2008 Byte Array At Runtime?

Nov 8, 2011

i have a byte array in my code which contains hex values which is readed from a bin file. now what i want to do is cut this array into equal size of 4096 bytes and made new array,s at run time and assign first (4096) byte,s to first array and so own

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VS 2008 Deserialization From Byte Array

Feb 11, 2010

Coming up against a brick wall with sending items over the network using sockets. I'm using Chilkat rather than the built in TCP Client / listener but thats not the issue. From point a I send through a string converted to base64 as below

[Code]...

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Operator '&' Is Not Defined For Types '1-dimensional Array Of Byte' And '1-dimensional Array Of Byte'.

Feb 26, 2012

I 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]......

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Read A Raw Byte Array From Any File, And Write That Byte Array Back Into A New File?

Sep 20, 2009

How do I read a raw byte array from any file, and write that byte array back into a new file?

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VS 2008 - How To Convert Byte Array Into IntPtr

Mar 23, 2010

I need to explicitly convert my byte array into IntPtr to pass it to the third-party api. I've been looking through Runtime.InteropServices namespace but didn't find anything suitable.

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VS 2008 - Sequentially Reading Byte Array

Jan 10, 2010

Is there any way using existing .NET framework classes/methods that you can sequentially read a byte array? I dont mean just using a for loop to loop through from the beginning to the end, I mean having the kind of methods that you have when working with an IO.Stream subclass, such as ReadByte. I thought I would just be able to construct a new IO.Stream class and pass it in a byte array but it seems that Stream is just for inheriting and cannot actually be used itself. I could implement my own class that just has an internal position counter and a byte array and then each time you call ReadByte on that it advances the position and returns the byte at that index... but it seems odd to have to implement such a basic thing myself.

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VS 2008 Byte Array Modification Runtime?

Nov 12, 2011

i have a list of byte array,s what i want to do is search for a element, replace that element ,add one more element after first element.

ex for element 7D i want to add 5d after . and for element 7E i want it to replaced it by 7D and need 5E after.

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VS 2008 Converting This Byte Array To A String

Jun 9, 2010

I'm calling a Windows API that gives me a byte array which represents a unicode string - the problem is that if I call Text.Encoding.ASCII.Get String on it I just get the first letter of the string. The reason for this is that byte array has an empty byte between each character. I've verified that removing these empty bytes resolves the problem by just using a simple For loop to add the bytes that do have a value in into a new byte array, then calling Text.Encoding.ASCII.GetString on that and that gives me the full string I'm expecting.I'm just wondering if there is any easier way of getting the working string though without having to do a loop and create a new byte array etc?

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VS 2008 Saving A Byte Array As A Resource?

Nov 4, 2010

VS 2008 Saving a Byte Array as a resource

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VS 2008 Trimming / Removing From Byte() Array

Nov 24, 2009

I have a byte array with contents from a file in it, but I want to trim / remove the first element from it [byte(0)]. I've searched for days and experimented with a hundred different methods but they don't work.

[Code]...

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Convert A IntPrt To Byte Array (Byte())?

Nov 18, 2010

How could you convert a IntPrt to a Byte Array (Byte()) ?

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Convert Byte Array Into A String Like So Dim Byt As Byte()?

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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Stuff 8 Bits Into One Byte Of An Array Of Byte

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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VS 2008 - Converting Byte Array To String And Back?

Mar 4, 2012

I am looking for something that will convert a byte array to a string and back, anything in-build that does it as this method would:

To string:
vb
Dim b = ByteArrSerialize(Obj, Compress, EncryptKey)
Dim sb As New System.Text.StringBuilder
For Each item In b
sb.Append(Chr(item))
Next

To byte:
vb
Dim b(0 To Len(TheString) - 1) As Byte
Dim bCount As Long = 0
For Each item In TheString
b(bCount) = Asc(item)
bCount += 1
Next

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VS 2008 Byte Array To String And Back - Not Working?

Aug 17, 2010

I have found a lot of examples of this kind of thing on the web but cannot get one that works - basically i am serializing to a byte array and want to store it in a string i have tried all of the System.Text.** (ASCIIEncoding,UTF32Encoding,UTF7Encoding and UTF8Encoding) in the following way:

[Code]...

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[2008] Convert Datatable Byte Array To Image?

Mar 6, 2009

i've created a new access 2007 database + added a OLE Object field, that i've then pasted images into.

in vb2008 i've connected to the database + put the table into a datatable. so far it works ok.

when i try to convert the byte array to an image, it causes an error:

'A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll'

heres the code i'm using:

vb

Dim arr() As Byte = DirectCast(record.Item(5), Byte())
pic.Image = Image.FromStream(New IO.MemoryStream(arr))

its loading the byte array properly, but the Image.FromStream line causes the error. i've used this method before with an earlier access database + it works.

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Pass Variable By Reference And Set Object To Reference?

May 26, 2010

I pass this class i created a variable by reference and i want that reference to be assigned to m_Text so that when i change m_Text it changes the TextValue variable i passed. Example:

Dim test2 as String = "ok"
Dim test as New GeneTextBox(test2)

'then some one changes the text in the GeneTextBox and i want it to change the test2 string...

Public Class GeneTextBox
Inherits Windows.Forms.TextBox
Private m_Text As String
Public Sub New(ByRef TextValue As String)

[code]....

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VS 2008 : Value Of Type 'Integer' Cannot Be Converted To Ƈ-dimensional Array Of Byte'

Jan 17, 2010

Dim ScoreAddie As IntPtr = &H7FF824
Dim NewScore As Byte() = 999999
Dim p As Process
Dim myHandle As IntPtr

[code]....

Whats wrong?

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C# - Count Occurences In Byte List/array Using Another Byte List/array?

Jun 20, 2011

I 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]...

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VS 2008 Pass Array To Thread

Nov 4, 2009

Further to:- [URL] I now need to pass an array thus:- HTML

[Code]....

Myarray can be redimentioned. Since I need to pass an OBJECT to the thread how do I get the thread to recognise the passed array?

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Sql - Pass Byte As SmallInt?

May 16, 2011

I have an Informix stored procedure which takes an int and a "smallint" as parameters. I'm trying to call this SP from a .net4 Visual Basic program.As far as I know, "smallint" is a byte. Unfortunately, when loading up the IfxCommand.Parameters collection with an Integer and a Byte, I get an ArgumentException thrown of {"The parameter data type of Byte is invalid."} with the following stack trace:

[Code]...

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2008 Create Array And Pass It Using A Property

Apr 19, 2009

I am currently learning VB.net but for a project I need to create and array and pass it using a property. The data to be passed will be a train's destination, the time its due and the expected time of the train. I was wondering if someone could simplly explain how to first produce an array and then show how to pass it to a custom control

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