VS 2010 Compare Image Byte Array?

Dec 25, 2011

and i need to convert the image into a text.now anyone thinking that i can just use ocr is unfortunatly wrong i have tried about 5 of them and they dont work because the text in the image is to small for it to recognise it.so i need to search the above image for a smaller image such as this.so by doing this if i get a result saying true then i will be able to go from be there and convert to text.now i know of two way to search an image for a smaller image. first is by going by pixel search and well i can get that to work but it is to slow.the second method is to convert the image to a byte array(beig an image it will be a 2d byte array) and convert the other image to a byte array and then compare.

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Do Byte Array Into Image?

Jun 12, 2009

since 2 week i'm stuck to do this thing. Actually i need to display image from oracle database into the picturebox. My oracle database got table name "STAFF_PHOTO" and the column of photo is "PICTURE". The image already converted into ByteArray. I'm already make a connection and success but the image stil cannot display. already refer to the tutorial but still stuck. I'm also try to use Memorystream but still can't.

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Image To Byte Array?

Feb 22, 2012

I'm having a image inside the picture box which is loaded from the database as a byte array.And again i want to convert the image into byte array.I can find the solutions on converting the image, which is stored from hard disk or something like, to byte array.

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Convert Image To Byte Array?

Jun 10, 2010

I'm trying to convert a image into a byte array for use in a msacces db.THis is the code I use but I can;'t get the byte array?

Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

[code]....

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Image Array Save As Byte?

Jun 8, 2011

Now i have some images and i have a database (MS Access)i need to convert all images to !one byte array!(couse i have 1 column for images) and i save this array. Then when i need a picture i should take some pic on this byte array.umm i think i cant explain my status :)

i need to cut this byte array like split function. so then i can choose image whatever i want

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Put Imagelist Image Into A Byte Array

Nov 23, 2010

does anybody know how to put an image into a Byte array without specifying a format? I have a Listview with images downloaded from the internet and I want to save them all together to the hard drive as a single file, by using a structure. In order to do this I need to put the Imagelist images into a byte array. When the application starts I reload the images into the Imagelist again.

[Code]...

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Convert Between An Image Object And Byte Array?

Apr 10, 2009

How do I convert between an image object and Byte Array?

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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[code]....

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Save Image File From Byte Array?

Feb 9, 2012

I have this code which saves an "Image" to a SQL Server database:

vb.net

'You have the images in the PictureBoxes, now you need to store it as a Reference Image
'if the user has selected that option
Dim ms2 As New MemoryStream()

[Code].....

I am working on a PHP site at the moment that is having trouble reading that data to display the image, so I am attempting to not only save it to the DB, but also save it as a bitmap or other file type to the actual server.

How can I create an image file (not really picky on which file type) from the "arrImage()" data above?

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Convert Byte Array Into Image Itself And Show It In PictureBox1?

Feb 28, 2012

I have a Problems Regarding with the IMAGE I create a Program That save Information of END USERS including Image...but the Image will save into Bytes.....and I have no Problem in that as you seen below.....

[code]...

This is My Problem i have this Search Engine that can Search information that can show the information needed from the database....... it works Nicely but I don't know how to show/Retrieve the Image from Bytes to Image itself and show it into the PictureBox1.. the code shown Below..

[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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Converting Byte Array To Image To Load Crystal Report ?

Apr 8, 2012

i do not know why data type image on ms sql is not working ! so i choose to use varchar(max) as my datatype to store images.. but i do now know how to load it on crystal report..

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VS 2010 Decompressing A Byte Array?

Nov 24, 2011

I have read a byte array called compressed_byte_array() from a file. This array is compressed using the zlib compression Deflate (RFC1951).

How would I decompress this array and store it in another array, let's say decompressed_byte_array(). I probably have to use DeflateStream and I have tried a few methods, but always ending up with a error message.

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VS 2010 - Encrypt / Decrypt Byte Array

Jan 29, 2012

I have this code which works well:

Public Function AESEncrypt(ByVal PlainText As String, ByVal Password As String, ByVal salt As String)
Dim HashAlgorithm As String = "SHA1" 'Can be SHA1 or MD5
Dim PasswordIterations As String = 2
Dim InitialVector As String = "CanEncryption123" 'This should be a string of 16 ASCII characters.
Dim KeySize As Integer = 256 'Can be 128, 192, or 256.
[Code] .....

What I am after is this: Rather than having a string to encrypt/decrypt, I have a byte array.

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VS 2010 - How To Read Byte Array Using Structure

Dec 9, 2011

I have a byte array and I want to read it using a structure. This is a common situation with structured files having information in various places in the file and it's much easier to read the data if it's mapped with a structure. BitConverter would be great if it worked with Structures, but it doesn't. Basically, I want to read the same memory address either as a byte array or as a structure, or have a function that works like
vb.net
MyStructure = BitConverter.ToStructure(bytearray(), position)
Maybe there's a pointer method to do this?

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VS 2010 : Multi-dimensional Byte Array?

Mar 30, 2011

I think I need a two dimensional byte array I currently have something like this:

Dim MbyteData(196608) As Byte
' Open the file that is to be loaded into a byte array
Dim oFile As System.IO.FileInfo
oFile = New System.IO.FileInfo(sFilePath)

[code]....

I now need to load several files at once (say four) so I need four arrays of 196608 bytes and I want to reference them by a number - 0 to 3, assuming the array is zero based. If I use Dim MbyteData(196608, 3) as byte or Dim MbyteData(3, 196608) as byte the syntax seems to be correct but I hit an error ("Number of indices is less than the number of dimensions of the indexed array") when I try to add the extra dimension to the stream read with something like oFileStream.Read(MbyteData(index), 0, MiByteCount).

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VS 2010 Compare Pixel Range On Screen To A Saved Image?

Dec 1, 2011

We stream the BBC news channel through a laptop hooked to a PC in reception for our clients. Annoyingly the stream is interrupted randomly (the line isn't dropping, it's the BBC's problem). Therefore when it's interrupted we get an error screen appearing which we have to go and manually refresh to get the stream back playing.

My intentions are to build an app which will be run alongside (silently) the stream monitoring intermittently a range of pixels. If the range matches the error screen that I mentioned previously then I'd call "Esc" to exit the full screen and then "F5" to refresh the browser and finally a double click on a specified coordinate to bring it back to full screen.

Problem: I've been doing some googling and so far have only seen related posts where the comparison is between two saved images. Due to this I expect the answer to be "Take a screenshot every now and then, compare, return result".

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VS 2010 - Pasting Text Box Contents To Byte Array?

Jan 14, 2012

I have a text box that I will paste into a byte array, for example:
02 01 05 BF DD 03
All I need to do is when I click on a button, for the program to take the length of the array and store it in RCVDMSG_Length() and then take the contents of the text box and put it into a byte array RCVDMSG(). From there I think I can figure out how to manipulate the array... but it's this first step that I'm stuck on....

So far I have this in my Form:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim RCVDMSG() As Byte
Dim RCVDMSG_Length() As Integer
RCVDMSG_Length = Len(TextBox1.Text)

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VS 2010 - Properties To Return Either Integer Or Byte Array

Feb 24, 2011

I am creating a class that will represent a file and I am going to have lots of properties. Now I want the properties to return either a integer or a byte array. Is this possible or do I need to create 2 different properties one for the integer and one for the byte array? When I try I get. 'Public Property something As Integer' and 'Public Property something As Byte()' cannot overload each other because they differ only by return types.

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VS 2010 Declare Byte Array, Hardcoded Content?

Jun 6, 2012

Im trying to query a game server, and have been looking up what to send and so on...This is what they say:Quote:Request formatServer info can be requested by sending the following byte values in a UDP packet to the server.

FF FF FF FF 54 53 6F 75 72 63 65 20 45 6E 67 69 TSource Engi
6E 65 20 51 75 65 72 79 00 ne Query

[code].....

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VS 2010 Extract String From Byte Array Or Memorystream?

Jun 16, 2012

I'm using WinPcap to capture incoming data. Basically I'm dealing with a continuous stream of incoming data, either as byte array or as memorystream (pieces up to 64kb).

I need to check this data to see if there's a certain url and then extract it.

The url I need to find looks like this:http://201.122.38.5/data/today/798572987-589571?139805890582 The length of the 'code' after "/today/" is always the same. The IP address changes. What's the best/fastest/most efficient way to continuously check these byte arrays or memorystreams and extract the urls without hogging the CPU too much?

[Code]...

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VS 2010 Optimizing Byte Array To String Encoder

Feb 4, 2011

below is a byte array to string encoder. It uses the yEnc algorithm that is used for Usenet binaries (Usenet only supports text).

Doing a performance analysis in VS2010 shows that this is the most CPU intensive part of the application.

The encoder function is used thousands of times, so I'd like to optimize it as much as possible.

I'm using 'ReDim Preserve' instead of 'Take()ToArray', because I'm targeting .NET Framework 2.0. Is there a more efficient way of getting only a part of a byte array?

vb.net
'Values for yEnc Encoder
Public Structure EncoderValues
Public lChar As Byte

[Code].....

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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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VS 2010 Get A String From A Byte Array Previously Read From Memory?

Mar 27, 2011

I'm trying to get a string from a byte array previously read from memory

i can get the string like this

dim mem as string= ASCIIEncoding.ASCII.GetString(memory) or dim mem as string= UTF8Encoding.UTF8.GetString(memory) but when i try to concatenate this with another string i get a strange result dim result as string = "this is you memory string " & mem & " problem string" no matter what comes after mem in the concatenation it seems like it is not there when in fact it is because when i try this (mem has two chars in it) dim result as string = "this is you memory string " & mem(0) & mem(1) & " problem string" problem string appears so what i assume is that there are some vbCrLf chars in the string after reading (or is it from the conversion?)

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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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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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