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
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I need to read from offset 4896, then from 6096, then from 7296 for 100 times and for each interval add to the listbox.
So, I have two timers. 1 Timer is set with an interval of 1000 (milliseconds), therefore it goes off every 1 second. For some reason, when I set the interval on the same timer to 1, it goes off 100 times every second. Shouldn't it go off 1000 times every second? What's going on?
View 4 Repliesi want to do this with the delay of in interval with the loop of 10 times.
for n=0 to 10
label.text="0"
time delay of 1 second
label1.text="1"
end loop
But when i m using executing the loop completes it iterations and timer just show work in last iteration.
How would you make the Interval of a timer to be between two times.
E.g if you wanted an event to occur between every 7 and 20 seconds?
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].....
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
I am trying to read a 16bit binary file (tif image) and pixel values of the image ranges from 1200 to 4500. I tried to use BinaryReader using ReadUInt16 but I get EndOfStreamException Unhandled error. ReadByte method works fine with an 8bit tif file. I do not know how to read a 16bit image file using binaryReader. Shouldn't I use ReadUInt16 since values of pixels range from 1200 to 4500?
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I like to update data from an access database every 100ms. This works fine, but it does not look good on the screen. It refresh the whole screen on my laptop and it is not looking good. Is it a good way of updating data without getting this disturbanses in the screen?
View 1 RepliesIn 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)?
View 1 RepliesI 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.
View 15 RepliesI 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.
View 10 RepliesIm 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.
View 12 RepliesI 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 .
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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.
View 2 RepliesI 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]...
View 5 RepliesI 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].....
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]....
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.
View 2 RepliesI'm trying to use a macro to convert a 4 digit entry by my spreadsheet user into time format hh:mm, so for example 1200 into 12:00, but only on certain ranges of cells. So far i've got the following script on the code for the excel sheets i want to use it on, as oppose to in a module, but it doesn't seem to make any difference.
[Code]....
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.
View 4 Repliesi tried to get the string from binary file by using this code..
[Code]...
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.
What exactly is that time-out interval parameter when downloading a file using vb2010?
View 4 RepliesI 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"
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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??
View 3 Repliesi try to read a dbf file with that sub
imports system.data
Public Sub dbf2()
Dim objLigacao As System.Data.OleDb.OleDbConnection
[Code]....
how i can connect and read the same dbf two times with different application???
I have this class:
Public Class ProxyHelper
Private Shared proxyQueue As New Queue(Of System.Net.WebProxy)()
' Just holds the number of times we've asked for a proxy.
[Code]....
This will ask for one proxy each time my webclient does something five times.
My webclient simply downloads some data and views it from a webpage over and over, and after 5 times you will get banned.
Question: How can I make the above code ask for a proxy from a textfile with one proxy on each line?
I will not have a browse function, the proxies.txt will always be in the app.dir
my event in timer goes too fast, i need to slower it. the interval is ok, i cant use sleep because it freeze everything ( webbrowser control ) and it need to stay active not freezing. i tried application. doevents() no result same problem, is there a way to do what i need? its a program that automatically fill a webbrowser form and restart every-time. there no logout button so i need to use setmouseposition and mouse_event but timer do event too fast one after other and if i use sleep everything go wrong.
View 5 RepliesI'm working on a small game that I want to sync with the intensity of the music. I have a timer added and I want the interval to change with the intensity of the song playing. How would I go about doing this? I tried playing with Zplay and BASS.net with no luck.
View 1 Repliesi'm having a problem with AxisX interval labels. I want my AxisX length to be exactly one minute and labels showing every 5 second. So it should be 12 labels all the time. But after that minute passes, I'm getting 13th, than 14th label and so on.
Imports System.Windows.Forms.DataVisualization.Charting
Public Class Form1
Private minValue, maxValue As Date
Private rand As New Random()
[code]....