C# - Convert List(of Byte) To Picturebox
May 19, 2010
I have a jpeg file that is being held as a list(of Byte). Currently I have code that I can use to load and save the jpeg file as either a binary (.jpeg) or a csv of bytes (asadsda.csv). I would like to be able to take the list(of Byte) and convert it directly to a Picturebox without saving it to disk and then loading it to the picturebox. If you are curious, the reason I get the picture file as a list of bytes is because it gets transfered over serial via an industrial byte oriented protocol as just a bunch of bytes. I am using VB.net, but C# example is fine too.
View 3 Replies
ADVERTISEMENT
Sep 3, 2011
how to convert a list of int to byte array in C#, but can't get syntax to work out for me in vb.Converting a list of ints to a byte array.
View 1 Replies
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]....
View 3 Replies
Nov 18, 2010
How could you convert a IntPrt to a Byte Array (Byte()) ?
View 19 Replies
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.
View 1 Replies
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]...
View 3 Replies
Feb 11, 2009
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.
View 1 Replies
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?
View 2 Replies
Jul 16, 2011
I need to transfer a block of pixel values as quickly as possible to a picturebox control. The data will be in a byte array representing 512 pixels by 4 lines. The data is greyscale values from 0 to 255 but I could easily store each value three times to represent R, G and B if that made it easier/quicker to write the values to the picturebox.I've used fastpix (by Vic Joseph "Boops Boops") in the past but this seems more geared towards fast plotting of individual pixels and as I have a pre-formatted block of pixel data I was wondering about alternatives. I've done a bit of research and BitBlt seems interesting, but can this be used with a byte array as the "source"? All the examples I've seen are for transferring/merging between bitmaps/pictureboxes. How about Direct Memory Access? I just need a simple "brute force" method of getting my pre-formatted data into the picturebox. Oh, when I say "fast" I mean I'd like to plot my 512 x 4 pixels in less than 10mS.
View 8 Replies
Aug 14, 2009
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]...
View 2 Replies
Aug 12, 2009
Can any one tell me how I can convert an integer to a byte. I have a five digit interger and would like to have it as two bytes.
View 3 Replies
Apr 19, 2011
How to convert byte array to pdf using asp.net.
my code is
Response.Clear()
Response.ContentType = "application/pdf"
Response.AppendHeader("Content-Disposition", "inline;filename=data.pdf")
[Code].....
View 1 Replies
Jun 14, 2006
How to convert byte array to ASCII in VB.NET System.Text.Encoding.ASCII.Getstring(y) it gives the data like 52414D41 . but i need "RAMA" instead of 52414D41.
View 6 Replies
Jan 25, 2010
My application is reading in data from the serial port. The packet format uses 1 byte to tell the data length. The problem is as I am reading each byte in as a char when I try to get the value of the received character (using Asc(cRxd)) it only works up to values of 127, any bytes received that are over 127 are received as 63. I noticed that this was the default parity replace value, but I have parity.none set and I also changed the parity replace value. The received byte is always 63. I have tried reading the data using .ReadByte but this gives the same result - only works on values below 128.
View 1 Replies
Jun 10, 2009
I've tried CByte(hex) and Convert.ToByte(hex) neither work :/
View 1 Replies
Sep 7, 2009
I have a problem using FJ Core to convert image into byte.
I have a code written in C# which works fine.
The problem is when im running it in VB i get the exception: Arithmetic operation resulted in an overflow
It works fine in C# to convert a negative number into byte For Ex. (byte)-90024 = 88
But when i try to do it in VB i get the exception.[code]...
View 4 Replies
Oct 7, 2009
How to convert byte to bitmap
Dim ScreenshotBytes As Byte() = MySQLExecuteReader("SELECT Screenshot FROM Connections WHERE Connection='EC8C35F2'", "Screenshot")
Dim ScreenshotMemoryStream As System.IO.MemoryStream = New System.IO.MemoryStream(ScreenshotBytes)
[Code] .....
But I don't know how to get the bytes from the mysql server:
Public Function MySQLExecuteReader(ByRef StrCmdText As String, ByRef StrColumn As String)
'On Error Resume Next
Dim MySQLComm As New MySqlCommand(StrCmdText, Connection)
[Code] .....
I want to return the byte from the column: "Screenshot" which is an image (MEDIUMBLOB) so I can use it as a background for a picturebox.
View 1 Replies
Oct 19, 2011
Ok, I am tasked with changing certain text labels that exist within 1000's of CAD files. The only way to change the text labels, as of now, is to open each CAD file in a CAD editor, change the labels by hand, and save it as a new file name, and that will take forever.So, I want to make this job easier and to do that I need to write a program to do it automatically (not a Macro). So far, I have made an app that loads the CAD file's bytes, finds the position of the label's text bytes, and replaces the text bytes with my own bytes, and saves the file under a new name.The problem is, I don't know the format/encoding/whatever they used to write the string to bytes..... The good thing is, I have unlimited examples to learn from because I can use the CAD program to change the text and then see the results in Hex. I want MY program to mimic the results.Here is some hex examples;
13 BE FD F9 00 = wood
0F 1E 1E 80 = cat
0F 26 FC E0 = dog
[code]....
View 7 Replies
May 20, 2010
Iam using to vb.net I cannot know convert video to byte>
View 1 Replies
Sep 2, 2010
Basically what I'm now trying to find out is simply how to convert an Executable file into byte or byte array as i've heard it called, and then back again. I had a friend used to do it with a program in VB6 a few years ago where he would convert the EXE into byte and store it in a sql database and then his boss would be able to retrieve it later on when he was out on business overseas and it seemed to work very well.I'd like to know how to do it in VB.NET, however after going through some sites using google search I have come up short.
View 6 Replies
Nov 2, 2011
hI want conver my string to byte array.
how to convert my string to byte array in vb.net?
View 2 Replies
Dec 23, 2010
I have string in {&HF3,&HA1,&H01}
i want to convert it to byte array like {&HF3,&HA1,&H01}
View 1 Replies
Jun 15, 2010
I am reading/writing a fixed length header into a stream and I need to do the following in VB:
1. Convert a 2 byte integer (int16) into a byte array
2. Read 2 bytes of a byte array into an integer variable
View 6 Replies
Aug 8, 2009
I have a very simple question about converting a byte array into 16bit integers. I am connected to a device through a serial port. It sent me six bytes which represent three Int16 integers. For example, the byte array is called newRecievedData(5) and has a length of 6.
The manual that came with the device claims that the int Format is 8 bit MSB|8 bit LSB. Does that mean the following?
newRecievedData(0) contains 8 high bits of the first Int16
newRecievedData(1) contains 8 low bits of the first Int16
newRecievedData(2) contains 8 high bits of the second Int16
[Code]....
but VB.NET Express 2008 gives me the error that Error 1 Value of type '1-dimensional array of Byte' cannot be converted to 'Short'.
View 2 Replies
Jan 27, 2012
I'm trying to check whether a Win(RAR) archive is password protected.
0x74 0x24 0x94
How can I convert 0x24 0x94 to bits and check whether the file is encrypted with a password?
HEAD_TYPE Header type: 0x74
1 byte
HEAD_FLAGS Bit flags:
[code]....
View 2 Replies
Aug 12, 2009
I have an activex control that outputs a template object to the client, which gets serialized to a byte array. My attempts to put this byte array in a hidden field for post back to the server have given mixed reults, in that the size of the byte array decreases when sent to the server. My best guess is that the byte array is being truncated when put into a (string) hidden field.
I convert the byte array to a HEX string on the client side before passing over to the server, then converting it back on the server - HEX to byte array. If found some examples of how to do this in C#, VB.net but I haven't a clue how to accomplish this on the client - vbscript, javascript, etc,
I'm guessing something like this would get it done on the server, but how would I accomplish this on the client side?
Private Function Bytes_To_String2(ByVal bytes_Input As Byte()) As String
Dim strTemp As New StringBuilder(bytes_Input.Length * 2)
For Each b As Byte In bytes_Input
[Code].....
View 3 Replies
Mar 6, 2012
I m using encryption and decryption
When I use Return Convert.ToBase64String(ms.ToArray()), I can decrypt data by first Convert.FromBase64String(stringToDecrypt) and it works fine.
But if I dont use Base64string method when returning the data and use .Encoding.ASCII.GetString(ms.ToArray) and then try to decrypt, I get "Bad data" error
View 11 Replies
Aug 16, 2010
in my project I use an Excel workbook as template. Right now, this workbook is located in the same directory as the exe-assembly and can be opened and manipulated by the user. To avoid this, I thought about adding the workbook to a ressource. That works. Problem: how can I convert the resulting byte-array/stream back to a workbook-object?I tried like this, but - obviously - the conversion fails:
Public Shared Sub test()
Dim wkb As Excel.Workbook
Dim bytes As Byte() = My.Resources.Template_1
[code]....
View 3 Replies
Nov 23, 2010
how do I convert C# code
[Code]....
View 3 Replies
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]....
View 7 Replies
