I'm trying to make a client and a server connected in vb 2010. how to make a client and server connected? There is only vb2008 in the codebank and if my vb2010 tries to convert it to vb 2010 it will error.
View 1 RepliesI have a simple tcp server listening for clients. I use a mud client to test if it's working. The mud client says that it's connected to 127.0.0.1, but the server doesn't show the msgbox that a client has connected.[code]
View 3 RepliesMy first post here in vb forums. I'm new to sockets programming since I migrated from Winsock and I learn a lot from Atheist. using his code, I can't access the messageReceived() every time a client sends a message on the server. but then I put a code to catch the message on sub doRead() and I can retrieve the message. My problem now is how can I determine if a client is still connected to the server or not so I can delete it on the ConnectedClient ?
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Note: the server runs on Win7 x64 ultimate and the clients are laptops on win7 x86. I read a comment that the server should be having a static IP address, but when did it together with the clients, It still doesn't work. I am just using a switch for the network.
I need to check if my client is connected to the server by starting a new thread. So in short I need a way to know if the client is still connected to the server.
Here is my
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Im trying to make a basic Client/Server. The server can handle multiple clients and each client can send /recieve messages from the server.It works fine with just 1 client. but as soon as i connect with a second client. The first one no longer works. Anything sent from the first client is ignored by the server and when running the server in debug mode it gets errors from the client 1 stream.
Its as if the server will only hold one stream at a time and whenever another client joins the other streams are shut but the new client works fine. Even though i never close a stream.
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Edit: FINALLY FOUND IT! Stupid mistake i forgot to put the ClientN variable up by one for each new client.So i was creating a new space in the array but erasing the first slot for the new client
Hey guys, I am trying to send data from client to server (encrypted) and the string sent from the client is not the same as recieved from the server. I've been killing my brain for hours to get this to work but I cant manage. Im converting everything to Base64 string.
Client:
Public Sub SendMessage(ByVal msg As String)
Try
SyncLock myclient.GetStream
sw = New IO.StreamWriter(myclient.GetStream)
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How to make clients on sql server i mean when i will install my application on clients how i will connect it with sql server?
View 6 RepliesI have an application in which i have a database .mdf file in directory which i use a connection string to give a path of to access it, which means without installing sql server i can access database. Connection string below to access this database(.mdf) which placed in the directory.
dim con as sqlconnection = New SqlConnection("Data Source=.SQLExpress;integrated security=true;attachdbfilename=|DataDirectory|Universal_data.mdf;user instance=true")
Now the question is that if i access this .mdf file without installing sql server, i also want to access to this .mdf file on other computer(client) after creating DSN or any other connectivity tool.
Let me know you that when i install sql server 2000 or 2005 i create SA user name and password which i use to create DSN on client computer and give SA username and password in the connection string that successfully works and client get access to sql server, connection string is below.
Dim serv = "MY-LAPTOP"
dim con as sqlconnection = new sqlconnection("Data Source=" & serv & ";Initial Catalog=clinic;Persist Security Info=True;User ID=sa")
I only need to know that my application access .mdf file without installing sql server works fine on a single computer, and i want to give access to this .mdf file on other clients without installing sql server on server computer (like i mentioned above paragraph) how will do it.....
how to create a client/server... But I couldn't... I don't want anything fancy. Just want the client to send the server 4 numbers, depending on the user's choice; after that, the server would turn off the pc, restart it, etc. It all depends on the number received. Is there a rather "simple" way to do it? If it's not to much trouble you could use Atheist's example. (Btw I don't understand the code and, yes, I've checked on [URL])
View 9 Repliesanyone can teach me how to make billing system which is server - client.i will put the sql database to one pc then clients - the gui system.i want to run may system from other pc then connect to sql database which in another pc..
View 1 RepliesI really need to know if its possible because I'm making a messaging client since me and my friend find believe MSN is getting buggier. I've looked on how to do it but none of them worked for me, or were server to client. I want to make it client to server to clients but I don't know how! I know I shouldn't tell you to give me code but maybe give me a few tips on this. Me and my friend share files nearly everyday.
View 11 Replieslinks or Procedure how to build a client/server and file sharing through lan because my friends needs a reference for That
View 4 Replieshow i can make a udp server that waits client to communicate with him and the server answer them back even if the server doesn't know the ip of the client in vb.
View 3 RepliesI use Microsoft Visual Basic 2008 Express Edition and I am begginer in computer networks. I want to make two PCs communicate via network using server/client I followed the example from this site: [URL] (VB.NET TCP Client/Server Socket Commmunications) When I run the applications server and client in one computer then is possible the client to connect with server.
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I was wanting to make a simple client-server program.I saw some code for it and it was easy to understand but it was with winsock.
The program is:
Client: Clicks button.
Server: Recieves Text written in clients textbox.
Is there a reasonably easy way to do this?Maybe Net.Sockets or something similar?
Im trying to make my client send the users Account and IP to the server. And the server puts them on a list box?
View 3 RepliesWe are creating a Who wants to be a millionaire style game in VB. Our server is pulling information such as questions and answers from a Access Database and sending them to the contestants (Clients). All transfer of information is directly from the server to each client. One of the "Life Lines" we want to use is "Ask a friend", where one client is able to Instant message another client for a short time to get help on the question.
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Is their a way to give every client that is connected to the server an ID.
EX: SendMessage(Client.ID,"Hello")
I'm working for a socket tcp/ip. I have a server form on Server PC and client forms on all clients. I want the clients auto find and connect to the server PC when I open connection on server form? (in common, I have to set the server IP and ports to each clients, if not they cannot connect).
View 3 Repliesbasically i just want client to say "C: emp" ENTER
then, server must reply with all its files in c: emp
The problem I have is: When I click on cmdListen in the server form and cmdConnect in the client form,both programs won't respond and they crash for some reason I don't know.
Client source code:
Code:
Imports System.Net.Sockets
Imports System.Text
Public Class Form1
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Code:
Imports System.Net.Sockets
Imports System.Text
Public Class Form1
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I just finished making my project, its a Registration System using Visual Basic 2010.
How can I make a server that allows client to open the system? so they can Add, Edit, Delete, Save, etc...
P.S. I try file sharing but it doesn't work. using win7 to winXP.
I am currently learning how to program in VB and am using sample code to make a VB Winsock client and server. I beleive the sample code was from VB 6.0. [code]Overload resolution failed because no accessible 'GetData' accepts this number of arguments.I am getting the exact same error in the exact same place in the server aswell. I have tried removing the vbString, but it comes up with a warning and the program doesn't function like it should. I am programming this in Visual Basic 2010 Express.
View 3 RepliesI'm doing a small project. It works on a LAN. The working of the project is:In client side, a user would enters "username" and "password". It would sent that to the server, along with the time.The server would authenticates info on checking a db and writes some info to the db.Also, the server should be able to sent some commands or instructions to the clients.These commands on received by the client, it would invoke certain functions/subs on the client based on the command.So, would it be better to use TCP client & listener or WCF ?
View 6 RepliesI have started to learn how to use the TcpListener class to create a server/client chat facility, But im having some issues as to how to perform this at the moment i have the following code for the server.
Dim counter As Integer
serverSocket.Start()
ListBox1.Items.Add("Server Started!")
counter = 0
While (True)
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Client Accepted (I understand would most likely need a new thread for each client who is accepted, Once accepted , Return to the main loop to check for more clients.) No Client Connecting I understand that this may have to be done in a thread but ive not looked into using a seperate thread for this to infinitely run.
I want to make a basic winsock chat server and client, and I just need to know the basics, like.How do you determine where to send the data?How do you determine where to receive data from?How to actually send and receive the data?I just don't want to read from a website that has a lot of extra information. I just want to start off with the basics so I can actually learn.
View 2 RepliesThe problem im having is that I have a table that when a user click on a button it adds a row to the table via javascript, which works fine. The problem is that if a user need to update other data the user click another button which refreshes the page and all rows the user created in the table are deleted. My question is what can I do to make the rows not to be deleted once the page is refreshed? I know some might think, just not refresh the page, but there is to much data that has to be displayed and a new query has to be generated to grab the data.
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Ive been working recently on a chat. Ive been using FTP to comunicate through both forms but it need to constantly download the new data and make the application freeze. Even with a Backgroundworker. So my question is : is there a way to keep a constant connection between the form and the host? And not LAN ,I mean that doesnt need to be on the same router.
View 1 RepliesI have written a code for sending emails using my vb.net application,ok.Now i want to inform my client if and only if he is not connected to the internet before the sending emails.so it means the purpose of my code will be to check if he is online or nt and if not then inform him to get online and then try sending the email.How to do this?
View 5 RepliesI'm creating a VB2010 application which will require a connection to MSSQL. Should I Install SQL 2008 on my computer then use MS SQL 2008 as my data source or skip installing SQL 2008 and use MDF instead?
Also the program must have the following requirement
Program must use SQL as their database source End user must not install SQL server on their machine Program must be able to update (sync) the local SQL database from SQL server on the web. (User will have option to delete everything on their local database and load everything fresh from the server or to merge the update with existing data) Programs will (most of the time) run in an offline environment. When the user have access to internet they can update the database The program must allow user to add,edit, delete their local database while offline Only certain user (authorized user) can update their local database back to the serverC
Is it possible to created a program that meets all the above requirement ?