Sending Some Data Over A Networkstream
Jul 31, 2009I am sending some data over a networkstream. The datasize is 97 The buffersize is 1. Data is a list of bytes. When the bytecount reaches 94 the do while loop exist itself.
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Sending An XML File Via NetworkStream?
Jun 28, 2010I have an XDocument ready to be sent out via Network stream, what do I need to get it working? I am connected via networkstream and can send regular text, but I don't know how to send an XML Document, I use the networkStream.write() function to send in text.
View 2 RepliesSending & Receiving Bitmap From Networkstream?
May 11, 2011I was trying to develop a video chat p2p system by sending bitmap of the picturebox where the webcam performs. I want to send and make the client just prompted without having the client to save the file by opening savefiledialog of the bitmap i was sending.
The sending part was like first I copy the frame of the picturebox which showing the video cam, and saved it into memorystream as .bmp file like this:
ms = New MemoryStream()
Dim a As Image
a = Server1.copyFrame(Me.PictureBox1, New RectangleF(0, 0, _
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Not Receiving All Data With Networkstream.read
Dec 11, 2011I'm using the following code to get newsgroups from a server[code]...
When I execute the code, the routine only receives one block of the data. However, if I go into debug mode with a breakpoint at the loop instruction, I receive all of the blocks of data.Am I missing something in the code, like a wait or something, that would allow the program to receive all data like happens with the debug?
Not Receiving All Data With Networkstream.read?
Dec 8, 2011I'm using the following code to get newsgroups from a server:
sendBytes = Encoding.ASCII.GetBytes("LIST active microsoft.public*" & ControlChars.CrLf)
networkStream.Write(sendBytes, 0, sendBytes.Length)
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Read And Evaluate Data From NetworkStream?
Apr 18, 2011I have a device that is continuously sending text over a TCP port and I want to write a VB.net application that will read and evaluate this data. Each line of text that arrives over the port can be of varying length and each value in the line is separated by a comma. I need to separate out these values in order to take various actions based on their contents.
The following code appears to read the NetworkStream fine but when I try to read the data into an array and output one field into a text file the code is only catching a few lines of the high number coming through the port.[code]....
.net - Get Length Of Data Sent Over Network To TCPlistener/networkstream?
Jan 8, 2010It seems the most obvious thing, but I just can't work out how to get the length of bytes sent over a network using a TCPClient and TCPListener? This is my code so far:
'Must listen on correct port- must be same as port client wants to connect on.
Const portNumber As Integer = 9999
Dim tcpListener As New TcpListener(IPAddress.Parse("192.168.2.7"), portNumber)
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I need to get the length of the networkstream to set the size of the array of bytes I'm going to read the data into. But the networkStream.length is unsupported and does not work and throws an Notsupportedexception.
The only other way I can think of is to send the size of the data before sending the data, but this seems the long way round.
Use The .NET NetworkStream And TcpClient To Connect To A Remote IP And Wait For Data?
Oct 14, 2011I am struggling a lot with this code I am trying to get to work. I have successfully made a connection with the TcpClient object to two separate remote machines and transmitted data to them. Essentially, I'm trying to connect to Machine 1 on port 80 and send a GET request. Once I send the request I want to keep the connection alive so that the software on the other side can send me data when it is ready. How do I keep the connection open and read data in each time it is made available in the stream? I have tried and tried using NetworkStream.Read and BeginRead to no avail. The closest I have come was sleeping my thread every 30 seconds and then doing another GET request which is not needed. Here is the current code I have for reading from the stream. I know I need a loop in here somewhere:Note: RemoteSocket is my TcpClient object that is connected by this point
Dim serverStream As NetworkStream = RemoteSocket.GetStream()
rqst = "GET /Control/Clip_Forwarding_Stream?CameraName=" & URL_Encode(Name) & " HTTP/1.0" & vbCrLf & vbCrLf
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NetworkStream.Write() Slow When Writing Back Received Data To Browser?
Apr 13, 2012I am building a simple proxy in server vb.NET and so far it has been successful, but then whenever i receive data from the internet and write it back to my browser's network stream using NetworkStream.Write the received data tends to come up slowly to my browser due to reasons i do not know of. But when I chain my application to another Proxy/listener on my local computer (e.g Privoxy), data seems to come up very fast to my browser. If anyone has an answer to this I would really love to know.btw here is the part of my code {subroutine} that receives data and forwards to my browser.
Public Sub ForwardRequest(ByVal Client As TcpClient, ByVal ClientMessage As String)
Dim Browser As TcpClient = Client
Dim BrowserStream As NetworkStream = Browser.GetStream
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GPIB Communication - Sending Data - Receiving Data - Saving Data
Sep 19, 2010I need to control a device with a GPIB port. I have the commands that I need to use to do this; but I don't know which is the sintaxis in Visual Basic.
For example if I need to send a instruction like "START:0.01" to the external device which are the libraries that I have to include?, how should I write the programming line to do this?
The main tasks that I need to program are sending data, receiving data, and saving data
Sends Data On A Networkstream Through A Tcp Connection - Error "An Established Connection Was Aborted By The Software In Your Host Machine"
Aug 18, 2009I have a program that sends some data on a networkstream through a tcp connection.
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VS 2008 Sending Data To A Webpage Via POST, Data Not Getting There
Jun 16, 2010I've code this code below:
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim hwrRequest As HttpWebRequest = HttpWebRequest.Create("http://www.example.com/web-service.php")
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The MsgBox() at the end shows the response, which as I've added to my script, echos the result from the $user and $pass variables which are supposed to retrieve those details being written to the stream above, but they show up empty.
I'm retrieving those values by doing: $user = $_POST["user"]; $pass = $_POST["pass"];
Use For Reading From A Networkstream?
Jan 8, 2010I know it's subjective but this was the result I came up with based on the answer to me previous question and it seems a bit "slapped together", as I have changed it quite a bit:
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Basically is there a better way to write this (even just part of the code) or a more efficient way to do it?
Basically the code is there to read all the bytes from a networkstream 1024 bytes at a time. And each time it reads the bytes it puts into one array which is returned.The thing i think might be better is only Redim byteTempbuffer if intRead is less than 1024 (the redim is to prevent empty bytes from being added to the end of the array when there are less the 1024 bytes left to read from the networkstream) (basically is it more efficent to Redim every time or to go through and if statement and redim only if needed)
TCP Receiving / Sending Data
Nov 11, 2009Im woundering how does Receiving/Sending data work in a TCPClient/Server that is connected in the same networkstream.
View 4 Replies.net - Sending Data From VC++ To VB In A .NET Framework?
Mar 2, 2010I'm having a heck of a time figuring this out, the tutorials I found on the web are not complete or are for VB 6.0 (obsolete in some cases). On the C++ side I have the following ::
hwndExternalApplication = FindWindow(NULL, L"Dromocast Client");
SendMessage(hwndExternalApplication, WM_SETTEXT, NULL, (LPARAM)"Hello");
"Dromocast Client" is my visual basic application, and I checked to make sure it's not NULL. In fact I get made sure I'm getting some data on the VB side. On my Visual Basic side I have the following
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When I send the data over it's garbage, meaning strTemp comes out as all these chinese characters, and my title bar on the visual basic program gets garbled with a bunch of chinese characters as well. My guess is my "SendMessage" is written wrong, or I'm doing something silly, but I have no idea what. I'm not a windows programmer so I'm kinda trying to figure this stuff out by googling.
Determine Whether Data Is Sending In?
Jan 5, 2010I am currently writing a visual basic program that gets data from a serial port. everything is connected up but the data is not received until my device on the other side is turned on on the other side. which condition can i use in my loop to ensure that i only start comparing when i have started to receive so that my loop will not hang as there is no data input?
View 1 RepliesSending And Receiving Data To Or From PIC Through RS-232?
Nov 14, 2011Currently I had write a simple VB code, my aim is when i click "Forward" button then the vb will send a character "A" to PIC, "Reverse" button will send "B" so I write my vb code for sending as below:
Dim Forward As Char = "A"
SerialPort1.Open()
SerialPort1.Write(Forward)
For the receiving part, after I received the data from PIC then I will show it at the label which act it as a screen. the receiving code as below:
SerialPort1.Open()
receive = SerialPort1.ReadChar()
If receive = "A" Then[code]....
Sending And Receiving Data Via USB?
Dec 4, 2011I am working on system support for an electronics project wherein I have to receive an 8 bit (binary) data through a USB port and store either the binary or the corresponding decimal into a variable. How can I implement this in visual basic 2010?
View 11 RepliesSending Data Between Forms
Dec 1, 2010i have a similar question so i thought i might post it here rather than clutter the place with a new thread, if that's okay.first off, i'm using VB 2010 Express, if that makes any difference.second, i'm trying to send data to form2 from form3 rather than the other way around. i'm still pretty much new to VB, but have a lot of experience in PHP and some in java. i'm making a basic program that creates critters on form3 and then adds them to a table on form2.[code]then adds a value of 1 to the progress bar (i still am trying to figure out how that works) on form2.
View 3 RepliesSending Data From VB App To SQL Table
Jun 11, 2011how to connect and view data in a sql databse table. Does anyone know how to send data from say two textboxes to the table [Code]
View 3 RepliesSending Data To Access Db?
Apr 7, 2012i have created a MDI form and i have a child form that collects data and inserts it into access 2010 DB however it does not work .my code is odd and i am trying to use mysql syntax here is the names and opject types used in the sql code
intID = a text field that is autogenerated with a number
txtFirstname.text (text field)
myDOB is a DATE variable which is collected using a date picker (myDOB = dpDOB.Value.ToShortDateString)
same goes for mysubs
SQL
metag
INSERT INTO members (ID, FirstName, surname, DOB, SubsDate, HouseNo, Street, Town)VALUES ('" & intID & "','" & txtFirstName.Text & "','" & txtSurname.Text & "','" & myDOB & "','" & mySubs & "'" & txtHouseNo.Text & "'" & txtStreet.Text & "'" & txtCity.Text
i then get nothing but errors
VS 2008 Sending Out Data From One Pc To Another?
Dec 10, 2009I have a program that I collect data using a com port. I display that using special visual controls - no problem here.
What I would like to do is to send this same information out over the network via ethernet to another PC located in another room.
I presume I would have to have another copy of the program on the second pc as the information is simply duplicated but I am not sure how to get the data out of one to the other
How To Know Where The Other End Of The NetworkStream From The 'server' Computer
Jul 3, 2009How do I know where the other end of the NetworkStream from the 'server' computer? I have been looking at the following code that comes from a post out here, and am wondering where I can tell where I am going to send back to(URL/port)?
Private Sub DoListen()
Dim incomingClient As System.Net.Sockets.TcpClient
Do
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Load Image From Networkstream As Bmp?
Mar 18, 2010How would i load and image from network stream as bmp?For example the client sends a image thats jpg. but the server displays the image on a picture box property as bmp.
View 3 RepliesNetworkStream - Finding Out What Is Being Received
Sep 5, 2010This 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).
Networkstream File Transfers?
Jun 22, 2010I am attempting to write a vb.net 2008 application that will allow me to send files from a server to a client based on a request. I am going to post the same console application code below. When i run the server and the client on the local machine, i can get my file update and it works just fine. When i go to a different machine on my network and attempt to connect to the server and download the file, i get the correct file size but the file, when i attempt to run it, says "not a valid win32 application". Now with a little testing, this can be any executable that i send over the network through my update software.
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SERVER
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Imports System.Net.Sockets
Imports System.IO
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Networkstream.read Not Responding?
Jun 8, 2012I am new to vb.net programming. I am trying to connect to a device using TCP/IP.I am trying to send a command "Z<CR>" where Z is a character and <CR> is a ASCII value of 13. How can i do this in one statement?
I have written following code, but my program stops responding at .read statement:
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Access Com Port And Sending Data
Nov 9, 2011have gps constantly sending data but can read it from the com port
View 5 RepliesAsp.net - Sending VB Data To Another Page In Javascript?
May 28, 2010I'm creating a search form using an asp:button control with the urlpostback set to a results page. The problem is, the asp:button uses Visual Basic and the search results from Google require Javascript.
Is there a way to take the data from an asp: textbox in VB and then send it to another page that uses Javascript and use the data?
BitConverter - Sending Data Across TCP Socket
Apr 9, 2010Given the following information
Public Enum Request As Byte
None = 0
Identity = 1
License = 2
End Enum
Protected mType As Communication.Request
mType = Communication.Request.Identity
Debug.Print (BitConverter.GetBytes(mType).Length.tostring)
2
Why does bitconverter report that mType is a length of 2. I would have thought that passing a Byte into BitConverter.GetBytes would just return the Byte. I mean it's no big deal because it's only sending a very small block of data across a TCP Socket, but I'm just intrigued why it thinks it's 2 bytes.