Read Bytes From Console App Standardoutput
Nov 19, 2009
I have seen countless examples of reading standard output from command line applications which print text to the screen and one can read that back into the application as a string. I want to read the binary data back that is written to standard output from something such as image magick's convert program. What is coming back is an image, not a text result or error code. Is this possible? I have been looking for ages but found nothing that makes sense.
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Jun 28, 2011
I am trying to completely intercept a console application, that is, grabbing it's output, and inserting the input. So far, I can pretty much grab the output, and input is completely perfect. However, it will not show the "prefix"/"question" of the console's output, until you send some input. As an example, when hooking to the CMD.exe console. When you regularly start it up in Windows, you get something like this:
[Code]...
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Dec 28, 2010
What exactly does this line do?
i = stream.Read(bytes, 0, bytes.Length)
Does it read the entire message string sent by the client? I have a line to write to the stream later in the code and that does not seem to be sending anything back to the client, although the code around is excuting.
i = stream.Read(bytes, 0, bytes.Length)
While (i <> 0)
Try
' Translate data bytes to a ASCII string.
[code].....
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Sep 22, 2011
I created a text file contains 4 bytes of data
AABBCCDD
I just want to read the first 2 bytes (AABB) to execute it with my program.
Then I'll need to read the last 2 bytes (CCDD) for another computer routines
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Nov 8, 2011
I receive the irc messages like this [code]...
This show the empty space where it auto-scrolls to when writing the received string to the console.
This shows the actual received message (a bit edited with time, etc ...)
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Mar 6, 2011
I am not able to view the results of Console.Write() and Console.Read() in VB.Net.
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Jan 28, 2010
In 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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Feb 25, 2011
I have an old fashion Database with several files.I need to import to a new Sql Server dababase the data.There are tables with 6 Bytes numbers fields and we have no Number data type with that length.
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Jan 28, 2011
I want to read 15 bytes of data starting at byte 40 and ending at byte 55. I then want the value of the 15 bytes of data to print to textbox5. I know this should be a simple task but I'm having a lot of trouble figuring this out.
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Jan 9, 2009
Im currently making a program and I was really thinking about adding a simple hex editor into it (nothing really fancy). I know how to read/write/view bytes already but im stuck on how i will make the interface and stuff. Ive been searching google for hours and i cant find anything.
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Mar 5, 2011
I have an old fashion Database with several random access files and I need to import the data to a new Sql Server dababase the data. There are tables with 6 Bytes floating numbers fields and we have no Number data type with that length in VB. I tried and tried and... and can't find. I found this code in the ERP folder, is AlphaBasic. It use an envoirement namend A-shell from Microsabio .
[Code]...
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Oct 4, 2011
I need to do some operations that require converting array of bytes to string and the other way. After struggling with it for a few hours I found out the core of my problems. Look at this piece of [code]...
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Nov 3, 2010
I have a tcpclient connection setup capturing a continuous http stream. For some reason after the first few bytes are read, the stream does not get any data for a long time. Is there a problem with my code?
Dim tclient As TcpClient = New TcpClient(url, "80")
nstream = tclient.GetStream()
If nstream.CanRead Then[code].....
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Apr 11, 2010
Why does this programmer use a binary reader to read bytes, why not the client.getstream.read or streamreader?
Case RequestTags.Connect
'sent from server to client informing client that a successful
'connection negotiation has been made and the connection now exists.
[code]....
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May 31, 2011
I am trying to write and read bytes from usb device.I have an array dout(8) of boolean say f,t,t,f,t,t,f,t representing switch states.I need to convert that to a variable DataOut as byte. 01101101 Later I read the usb device.This gives me a variable Data as byte 10110100 I need to convert that to an array DIn(10) of boolean t,f,t,t,f,t,f,f All my code attempts have failed.
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Mar 24, 2010
I have successfully gotten the filestream function to read a text file and return bytes. I want it to return letters, not bytes, using random access.
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Aug 14, 2011
i tried to get the string from binary file by using this code..
[Code]...
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Feb 26, 2009
I am using sockets and such for a while now, and want to go an step further in this. Now for example lets say an client would send [lenghtofstringinbytes]string[somethingelseinbytes]another thing.
How can I send/read/parse it?
Now I am doing this:
Private Sub onDataArrival(ByVal ar As IAsyncResult)
Try
Dim obj_SocketState As StateObject = CType(ar.AsyncState, StateObject)
Dim obj_Socket As Socket = obj_SocketState.WorkSocket
Dim sck_Data As String
[Code] .....
So using Getstring for it, but thats not the way for this as you get nothing else but an empty string back. So I have to parse it without converting it to an string.
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Jun 4, 2009
I have a timer control that sends data to a hardware every 3 seconds. I sent 6 bytes of data. In return I am expecting 8 bytes of data in DataReceived event. First time I send 6 bytes of date, in DataReceived event, I get the expected 8 bytes. Then in next 3 seconds, again the expected 8 bytes of data is received. But after that I find that DataReceived is fired 2 times: first time I get 6 bytes and then I get 2 bytes. After that I again get 8 bytes as expected. So in short, 2 times I get 8 bytes as expected and 6 bytes and 2 bytes and again 8 bytes. This pattern is repeating continuously. Why? Is there any reason why I cannot get all 8 bytes everytime? Note that the code is in vb.net 2008
Code in button btn_Start ()
'Set serial port parameters
x.PortName = "COM1"
[Code].....
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Jul 8, 2009
I'm working on a project involving reading RFID tags, I've written the code and it reads the tags ok by using the recieved data handler and displaying the result in a listbox, the only problem is that the data displayed has a couple of unreadable characters at the start (I'm using ReadLine() command.)If I read the buffer byte by byte the data is all readable.How can I read and display the whole 16 Bytes in one go??
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Dec 17, 2011
I'm trying to read bytes with 1200 interval for 100 times, but I can't get it working. This is my
Try
Dim fr As FileStream = File.OpenRead(OpenFileDialog1.FileName)
Dim data(fr.Length) As Byte
[Code]....
I need to read from offset 4896, then from 6096, then from 7296 for 100 times and for each interval add to the listbox.
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Feb 15, 2009
I run a process (ffmpeg) in a backgroundworker and need it's output to calcute remaining time, estimated filesize etc. but I don't get any output from it. Here's the code used in the DoWork sub
Dim p As New Process
pback.WorkerReportsProgress = True
pback.WorkerSupportsCancellation = True
Dim tmpopts As MyOpts = DirectCast(e.Argument, MyOpts)
[code].....
The process runs and creates the file I'm expecting. I just don't get any output from it while doing it's work. The debug MsgBox shows one time and contains nothing but if I run ffmpeg without redirection in a shell it's outputting a new line every second.
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Dec 26, 2011
I'm running a program and reading the command line output, and, when I compare the output I get with the actual output of the program, I'm quite shocked to see that it doesn't actually match up and, sometimes, the text won't even display at all until after the entire process is done [despite using the Asynchronous methods].I'm not sure if I'm doing anything wrong here...I can post the code [it's a rough translation from VB.net to C#, which I can easily translate back], but is there anything I can actually do to fix this issue
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Jun 23, 2011
i want to create a console app that looks for specific commands that are imputed, such as "download [URL]
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May 31, 2011
I wrote a gui for a console app, wanted to captaure console app standarderror and standardoutput in the same time. I write a code, but it's not executed in the same time. I searched msdn and found that using DataReceivedEventHandler can be asynchronously collect the redirected StandardOutput or StandardError stream output of a proces. But I dont know how to apply it to my code. please help me. i wanted to collect standardoutput and standarderror and append it to a textbox. here is my code,As far as I understand, I have to read one stream synchronously and one asynchronously to avoid deadlock situations.But now it's not output in the same time. having delay issue for standarderror.
Dim start As New ProcessStartInfo("C:WindowsSystem32java.exe")
start.Arguments = "-jar" + " " + "args"
start.CreateNoWindow = True
[Code]....
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Aug 10, 2011
I am trying to create a console application that reads a text file?
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Apr 8, 2009
What i want to do, is to get my console application to read from a .txt file (with one word per line), and randomly select a line from that file and declare it as chosenword. However, i am not sure what i must do to do that.
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Apr 3, 2012
I'm attempting to read the full contents of a console process (after 3 seconds) with the code below:
Dim NewProcess As New System.Diagnostics.Process()
With NewProcess.StartInfo
.FileName = EXE_PATH
[code]....
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Nov 13, 2010
I want it to do is that you input a string, then you select an algorithm (Theres only going to be one RijnDael) then you input a key, then the Initialization Vector comes from "txtIV.text" then you select the key bytes and the block bytes from the numeric up/down, then you either encrypt or decrypt.
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Sep 16, 2011
Ok i am having some issues designing a base-class to handle generics.Caveat is i need to restrict the type put in as a Numeric type, specifically Int16, Int32, or Int64 (Short or Long).I know you can do Of T as {Structure} but i dont want to select the key bytes and the block bytes from the numeric up/down.
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