I'm successfully receiving bytes from an USB device using a HID USB .net library.Here is a sample of my code :
Dim ptr As IntPtr = USB.USB_Read()
Dim buff As Byte() = New Byte(USB.USB_ReadLength() - 1) {}
[code].....
My question is : how can I know wich button is pressed ? Meaning : I just want my program to store the button pressed and do an action when pressed.
I just wanted to confirm my reading -- this is the number of bytes that is put in the buffer before the data received event is triggered, correct? And it's ONLY for that purpose?
View 1 RepliesI 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 ...)
In my serial port application, I have my code -
Private Sub SerialPort_DataReceived(ByVal sender As System.Object, ByVal e As System.IO.Ports.SerialDataReceivedEventArgs) Handles SerialPort.DataReceived
Dim cnt2 As Byte
[code]....
For some packets I sent, "Error Data Received" came up. I checked BytesReceived, it was 0. My question is: since SerialPort_DataReceived processes data received, data was supposed to be received. Why the number of bytes I read was zero? BTW, when is this event accessed? it is accessed when any number of bytes received or the whole packet received?
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 Repliesust want to ask if its possible for me to measure how many bytes of data does a device sent to my computer using vb.net?
View 3 RepliesI am trying to interpret a xml response that gets fed into my RichTextBox so that i can alert the user of their success when posting a record to a website I am managing to count the number of successful and failed postings by searching for text shown below:
[Code]...
I have an array of Bytes. Most of these are interpreted as Unsigned. On certain occasions I need to interprete the byte as signed. Why can't Byte convert to SByte? What I'm doing: I'm trying to program a disassembler for an 8-bit video game ROM. My program reads the ROM and processes each instruction. The instructions are interpreted as unsigned. Some arguments for instructions would be treated by two's complement in the original hardware, however, to make a signed number.
View 8 RepliesI am connecting to a MS-Access 2007 database using VB 2010 and OLEDB. Conducting the following test seems to suggest that MS-Access does not interpret DBNull.Value correctly when sent as a parameter from OLEDB:[code]
View 2 RepliesI 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.
View 1 RepliesOk 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.
View 2 RepliesI keep getting a ProtocolViolationException "Bytes to be written to the stream exceed the Content-Length bytes size specified." on the following code.I've tried setting Content-Length numerous ways with no success.
Dim url = "https://domain.com"
Dim req As WebRequest = WebRequest.Create(url)
req.Method = "POST"
req.ContentType = "application/xml"
[Code]...
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].....
how can i make my program feel if any device or usb device plugged into the computer or unplugged.url...
View 3 RepliesA Problem in accessing a device from VB Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. (Code 42) This error is because i am using 2 devices of the same company which has the mass usb storage on it and when i install one of the device the other hides. So one is detected the Other is not. It also give a error called designed dragnonacally something...
View 2 RepliesI 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
Probably missing something silly here, Her eis what my display looks like Sending image...(401303) I would prefer it displays as Sending image...(391 kb)
[Code]...
I have a date I'm reading from an API in the following format:2010-03-15T00:00:00-04:00
When assigned to a date datatype in C#/VB.net, it's displayed as:
3/14/2010 11:00:00 PM //Note 3/15 is being displayed as 3/14
why is this displayed as the previous day? Is there a name for the format above?
I'm administering an application written in vb.net 2005 and running on windows XP but displayed to the client through citrix. The client has recieved a big red x over on of the tabs. I am unable to duplicate it?
View 5 Repliesi was trying to get a ftp client work on vb.net but i recieved a error 530 not logged in.
[Code]....
i want some method for get sent and received speed of internet?
View 16 RepliesThis question is about trying to find a way of telling what is being sent of the NetworkStream as in whether it is Text or Binary. For example I could have a Server program on my Girlfriends computer and the Client Program on mine, two functions on each:
Server: Textbox for catching any text sent (like a chat for example) and a function for receiving files (like an EXE or others)
Client: Textbox for sending text to the client (again like chat) and a function for sending files (again like EXE or others)
How do you code the server to tell it how to determine which is which (Binary or Text) and further more what if the file being sent isn't an EXE, what if its an image or a text file or other type? I already know how to send a file through to the server and put it back together on the other side but thats only sending an EXE file. I'd want to enable an update functionality in the server so it can receive a message from the client saying its sending through an update which once the server gets the message it will know what to do on the other end (i.e. stopping itself whilst the update.exe is running and copying over the new file).
I want just a code that calculate and show the traffic (volume) of sending and receiving to/from internet?for example, IE is opening a page and IDM is downloading a file ; NOW , how many bytes has been sent / received
View 5 RepliesI want just a code that calculate and show the traffic (volume) of sending and receiving to/from internet?
for example, IE is opening a page and IDM is downloading a file ; NOW , how many bytes has been sent / received?
I don't know what I've done bad, or what could have caused this bug : when I submit this form to the controller, the controller receives 2 empty fields here is the form inside the view :
@Using Html.BeginForm("contactSearch", "search", FormMethod.Post)
@Html.TextBox("SearchString")
@Html.DropDownList("opportunite", "Choisissez une opportunité")
@<input type="submit" value="Submit!" />
End Using
[Code]...
I built a server to receive data from clients.But how can I know the length of every data package.
Dim bteAcceptData(1024) As Byte
Dim myAsyncCallBack As New AsyncCallback(AddressOf ReceiveData)
intByte = EndSocket.EndReceive(pIAsyncResult)
[Code].....
i have been trying to register VB08 express for over an hour and have not recieved the verification email yet. has this happened to anyone yet? I tried multiple email addresses, checked junk folder...refreshed, sign out...etc.
View 2 RepliesHow to measure the number of bytes sent and received while using the internet from VB.NET 2010 ?
View 1 RepliesI'm not having any errors from these pieces of code, they're just empty everytime. I'm wondering if I perhaps have created them incorrectly.
Dim l As New Log()
l.Log = "Attempted staff login with username [" & txtUsername.Text & "]"
l.LogId = 0
l.StaffId = 4
l.LogDate = Date.Now()
l.Insert()
.Insert() is picked up in my BLL layer by these two functions;
[Code] ......
I've been using some code which I found on the net, and have noticed that the first byte is never recieved. Annoyingly, this contains the MAC addresses, which is the bit I want. Below is the relevant snippits:
Public Sub [Start]()
If m_Socket Is Nothing Then
Try
[Code].....
