How Can send And receive File with SerialPort in vb.net 2005 i use this sample code for sending string , and now i will know how can send any File by serialport click here there are no sample code in microsoft site i Use "Virtual Serial Ports Driver XP " to Test my sample how can use the Zmodem , Ymodem ,Xmodem , etc in vb.net by serialport ?
View 5 Replies
I am trying to set up a program that allows you to open multiple COM ports and then select which COM port you send data down. The computer i am using has 18 COM ports. Also on the first code it shows the ports are open they just wont receive anything.
[Code]...
from and to a text file. that's no problem and was done within a hour. (tnx to google)Now the problem. i want this textfile to be online. Normally with webpages you can read and write a file very easy but i've never done this withSo far the read code works. write code works in local mode, the only thing is he won't write to an online file.i don't get any errors the code looks fine for the debugger.the code so far (local mode for testing)
read:
Private Sub read()
If runlocal = False Then
[code].....
I am currently making an app in visual basic that I plan to make a chat server. I know that somehow I'm going to get the program to send and recieve data across ports on a certain ip address with variables such as maximum connections, etc.
The part I am mostly stuck on is firstly the code that you would need, or how to make a function to interact with ports across an ip.
Secondly, would it be a good idea to make a backround service to run for it to work on a host, and also how the other computers are going to find a host.
Since a few months I want to learn how to receive and send packets. Since WinSock doesn't work I think it'll be quite hard to get an easy way to do it.
I want to be able to send and get packets as a client. (TCP) I know that I need System.Net.Sockets, and that's quite everything...
I was going over the Screen Saver Tutorial for VB Express 2005 and i Noticed How the Screen Saver app excepts params at startup... and depending on the startup param it will display the screen saver or the options form... lets say that i want to start up a screen saver from my program, how would i send it to the screen saver to display the options form the param is "/p" or something.
View 2 RepliesI have a program that is meant to send and receive pictures. There are two parts, client and server, the server sending pictures, and client receiving.the server needs to send it across the internet, then the client needs to receive and show the image in a picture box.
View 1 Replieshow i send and recive sms through GSM like mobils using the AT command. vb.net have any api or control for it
View 1 RepliesI need to send and receive a large image between programs running on different machines within the same network.
I've looked at using upd however ran into problems with the size of the packets and
(after breaking the image into smaller pieces to get past this problem) the number of packets needing to be processed all at once - and ultimately packet loss.
I've also thought of sending the image by storing it in a common file folder and receiving it by using file watcher as a trigger. However, this just adds further complexities in setup where common folders don't already exist.
Assuming I'm barking up the right tree looking at tcp, can someone point me to/provide an example of how to send an image file using it (vb.net would be ideal). Also, are there practical limits to tcp package sizes?
I have these following lines to send bytes using socket
Dim server As New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)
Dim myIp As IPAddress = IPAddress.Parse("myIP")
Dim ip As New IPEndPoint(myIp, Int32.Parse("myPort"))
[Code]....
As in the code, I am supposed to retrieved "Halo". Instead I keep receiving sth like "[]".
I'm using asynchronous to send/receive from a website I want to block the BeginGetRequestStream method which I have done, using
Code:
WaitEvent.WaitOne(1000 * 20, false);
the problem is that it blocks the UI, which I thought it did not so it basically works like GetRequestStream which does block the UI.
Do you know how to create a program to send and receive sms and call from PC from and or to any devices?
View 1 RepliesI have created an application which listens for strings being sent to my pc from a remote unit. I now need to add the function of sending strings back to the remote unit on a button press. I've searched for ages to find a solution but I'm not knowledgeable enough yet with vb.net to solve this solution.
I'm getting the error with the line opensock2 = New IO.StreamWriter(client.GetStream) saying its not connected. So I seem to need to pass the connection from the background worker to the button click, or have it somewhere else in the code to make it accessible. [Code]
as above how to do that man? I will also want to extract the information to be sent from the database. An example of what i am going to do is something like this:
Reference:[URL]..
I didn't found any performance counter that would monitor an process's/thread's network bandwidth and not just that of an ethernet card.
So I could see how much bytes did an application receive and send.
Did I miss something or is there another way?
I want to send image from server to client via .net Sockets and assign it to a picturebox. but I got problem in receiving data, it's 'Server' side code:
[Code]...
[code]...
Now i need to do a few hundred/thousand requests all at the same time or atleast over a short period. I am assuning i need to do this asynchronously. I have looked all over the net and tested various ways to communicate asynchronously and am pretty stumped. None of the examples out there seem to explain how i receive the xml return as a string ("which i will write to file or db")
Does anyone have any working code to do such a process?
I'm completely new to sockets etc.I'm trying to create an app that'll allow someone to send short information messages to several other people with the same app, using the internet and sockets(?)I've tried using code from online, but I'm getting no where.
View 4 RepliesI am trying to send and receive data through a USB port on my computer to an external microcontroller.
I built most of the code using the "serial class" but then i read that this would not work with a USB port.
How would I go about communicating with this USB port on my computer?
How can send and receive SMS through VB.NET windows Application...
View 2 Repliesi want vb.net code to send or receive sms to mobile phone-GSM modem
View 1 RepliesI want to write a Solution with VB.Net for Receive "Users" requests and Send specified information to
them with SMS.I use D-Link GSM-Modem (Model:DWM-156).
This model/type of GSM-Modem, has embeded Driver and a Application for Sending/Receiving SMS.on it, and also we can attach MicroSD to the Device. 1-Send/Receive with GSM-Modem and D-Link's application :
when i attach GSM-Modem to USB port, D-Link' app , run automatically , then I heared noises on my Speaker, like when turn on a Mobile. I think this Signals "Hand Shake" with My GSM-Network.
[Code]...
I coded a small tcp server/client software implementing the async methods of the socket object. In order to keep track and control of the transfered data on both sides, I decided to wrap the bytes to be transfered into small 65 000 bytes packets, sent one after each other, in varying order.In most cases, it works perfectly, and it is impressively fast. However, when I want to transfer larger data than my usual requests, say like a dozen megabytes, crippling problems start to appear, out of shit.Effectively, it seems that somehow when executed without pauses, the server sends the packets too fast, or that the client receives it too slowly. However, if I put the SendAsync method's thread to sleep for like 100ms before sendingthe next packet, everything arrives without problem on the client.[code]
View 1 RepliesI'm looking for imports method in vb8 to connect any server send and receive
View 1 Repliesi am trying to ping some terminals and all i could find for code is this
If My.Computer.Network.Ping(IPaddress, 1000) Then
MsgBox(IPaddress & " pinged successfully.")
Else
MsgBox(IPaddress & " request timed out.")
End If
it keeps comming up request timed out message. and i got this from microsoft. instead of a message box i am going to return the response to a listview control but i have to get a successful message first.
I'm trying to send a message to a specific IP/Port and receive a reply in an ASP.net website, i tried the method describd at the following link but it didn't work for me as you can see SocketException An attempt was made to access a socket in a way forbidden by its access permissions
View 1 RepliesI am sending data to my server (MyServer.com) from microcontroller device using socket connection, I want to receive data using Socket and store in access database need a tracker for this work
View 3 RepliesI am trying to make an app which can send/receive files/pictures. I am trying to make a app which will get a picture of the users screen and send it to me, and display it in a picturebox at a set interval. With this, I will be able to sort of see what someone is looking at without having to have him send screenshots constantly.
Remote assistance does not seem to work for these apps, shows black, but I can make the program already get an accurate screenshot and display it of this program, I just need to know how to make it send it to me and display it to picturebox.
The thing I have been using is the MultiUser TCP chat application off MSDN's website, I don't know if this will work, but I need to make it send somehow and display it.
Does anyone have a link to a video tut for showing how to do a Multi-User TCP Send/Receive Sample? I know there is a drag and drop tool you can use but Im interested in making it by hand to better understand how to program it my self. At some point I want to use this information to make a simple game that sends and receives data packets between two machines for a simple "fighting" game.
View 1 RepliesI've solved part of the problem, but something I've just realised is the information just isn't getting through and EVERY example I find uses a Console type application and what about us people who don't wanna develop a Console application? I don't but nooooo they don't seem to understand that at MS and put one example which uses exactly that.
[Code]...
