l have just written a vb.net application and would like to install it on the server such that various users would access the central database on the server how would l achieve that in vb.net
View 1 RepliesHow can I make a server application? How can I then create another application that is meant for the clients!? I have tried to look for something for over 3 months now. All that stuff about TCP/IP just is not working! Using TCP/IP I cannot connect to anyone out of my network! How can I make it so when you start the client application it will automatically connect you to the server. Then having 2 textbox's and one button that says "Send". One text box will have what has been send and recived and the other textbox will be what you type to then later send it! How can I make it work with up to five clients!?
View 4 RepliesI have been struggling to find a solution for this problem. What I need to do is build a server application that accepts tcp client requests from different clients running on same port say:1003. I experimented by using asynchronous mode call backs etc. but it disconnects once connection is established and does not respond for further requests from the same client.
View 1 RepliesI need to know to limit the number of times a radio button can be used. Maybe the number of times the radio button has been used can be stored in an XML file, and when the user wants to reset the counter all they would have to do it delete this file. I really don't know, that's why I'm asking you. But,the program will append a string every time a button is clicked with a radio button selected, I just need to know how to, for instance only allow RadioButton2 to be used in this manner say... 15 times.
View 5 Repliesi want to designe a simple program that have one server and multiple clients.i program with vb.net,but dont know anything about winsock, can you send me a sample code for start.
View 1 RepliesI have been programming a TcpListener Program and I have everything working right! So far... Except that when I have multiple clients connecting to my Server... I used a try catch statement to catch the error and it says that tcplistener doesn't allow multi connections... think creating a new thread for each connection sounds like the most reasonible answer but I can't grasp the concept of it...
Here is my frmMain:
Imports System.IO
Imports System.Net
[code].....
I have a ASP.Net VB.Net application, which I developed an deployed in about 2004. I have just upgraded it to a new server and IIS 6.0. The application requires users to login from IE it and maintains their State using sessions on the server. I would like the users to be able to have multiple browsers open, each running with unique data on their client system. Is this possible, if so, what do I need to do?
View 4 RepliesI teach programming at a high school and I have used VB 2005 Express (in a computer lab of 33 clients) for a number of years without a problem. However, this year I switched over to VB 2008 Express and now I am constantly having registration issues. I have found the following ...
1. You must re-register the product for every user on that client
2. Each client must have a unique registration key
3. You are allowed only 30 days of useage without registration
What is happening is I asked my students to register the application themselves. But we keep getting this registration request every time a student switches seats in the room. Now we are getting an error message that says we have had too many registrations from this IP address.Is there a registration key that will work on more than one computer? Is there any way around the registration issue?
I'm new to network programming and i'm trying to write a server that can communicate with multiple clients through tcp/ip, the clients need to communicate with the server to and with the other clients. Currently i've got a client server program that works fine for only one client:
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I'll guess to accept multiple clients i have to create some clienthandler class at server side, but i have no idea which code it has to contain, i've already spend hours searching on google but didn't find anything usefull. Can somebody help me with this ?
I'm using a SQL database and I'm writing a VB.NET client application. This application is used on multiple computers at the same time. If one of the clients makes an update to the database I would like to have the other clients to be aware of the update.
Has ony one already done this before?
I am facing a problem in VB .net Client/Server application where I am successfully able to talk between them using TCPListener and TCPClient class usage. However, when I try to connect another Client to the same server on the same welcome port, it errors out throwing an exception or behaves very unexpectedly.Isn't it true that the Server connection is on a WELCOME PORT for all the clients, and that each client connected gets a new port to carry on its communication with the server AUTOMATICALLY (according to the Tomcat webserver working)
View 2 RepliesI made a simple chat system that connects to a server with a client one on one. I'm not really sure how to get multiple clients with the server so that you can see everyone's messages. Here is the source code. The Server only accepts one client at a time.
View 3 RepliesI have a large class that I built to act as a TCP server for one of my silverlight applications. When a user connects it stores the tcp client into a table for later communication. The problem is that when I send data, with more than one client connected, it loops through both open TCP Clients but some how sends the data twice to the same client.... the other tcp client never receives his data. This isn't a logic issue as I can step through the code and see that it is clearly taking each individual TCP client out of the table and sending it the data. They all use the same port... could that be the issue? And if so how do I make it so that it can connect on one port then transfer to another? I have tried using different computers for connecting but still the most recently connected client receives all of the packets of data.
View 6 RepliesI am developing project on cyber cafe using vb .net 2005 and winsock i don't know how to accept connections from multiple clients to a server having winsock control
View 2 RepliesHow 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 3 RepliesI have 2 clients connected via a server program.When 1 client hits an arrow key, a picturebox moves on client1 and on client2.Before adding this network functionality, the picturebox on client1 moved fast with each click.Now, there is a delay of like 2-3 seconds.I know the code isn't optimal, but i'm not a networking wizard.What i'm doing is when pressing a key on client 1, it passes a text to a textbox in client 2 which then has the picturebox move in client 2 depending on the text.The slowdown occurs on client 1, which is odd because the picturebox isn't directly connected to the network code.[code]
View 3 RepliesUsing visual basic 2008 express enition How do you make multiple pictureboxs center on screen the code i got from a book is this
Me.FormBorderStyle = Windows.Forms.FormBorderStyle.None
PictureBox1.Left = ((Me.Width / 2) - (PictureBox1.Width))
PictureBox1.Top = ((Me.Height / 2) - (PictureBox1.Height))
PictureBox2.Left = ((Me.Width / 2) + (PictureBox2.Width))
PictureBox2.Top = ((Me.Height / 2) - (PictureBox2.Height))
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Is there a way to make a setup package on VB 2010 that will check prerequisite addons on clients PC?
The setup will check if MS Access 2010 Engine and Crystal Reports Runtime 2010 is installed. If the installer detected its already installed it will just install the application.
If one or both prerequisite is not found the installer will install the addon automatically.
I am programming in VB 2010 and have a question. I have some code that currently only applies to one text box. As you will see, I have sub setup to handle multiple textbox events. My question being, Is there a way to take this code and apply it to all textboxes that are being handled?
VBCode:
Private Sub TextBoxes_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles fnameTxBx.TextChanged, _
lnameTxBx.TextChanged, streetTxBx.TextChanged, cityTxBx.TextChanged
Dim theText As String = fnameTxBx.Text
[code]....
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'm writing a tool the retrieves data from an Oracle database. The majority of the fields are VARCHAR2, but there's one particular field I want to retrieve that is a CLOB. I'm trying to convert the text in this CLOB to a string that I can then run a regex against it to isolate a certain bit of information and then display that information in the program's console. Unfortunately, I can't seem to figure out how to convert this CLOB into a usable string. I've tried a lot of different things, but what I've got at the moment is:
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Okay, so, for school i have a project i need to completely program by the end of next semester. My graduation project. And it needs to be a full-blown piece of software that would be theoreticly usable for a person or company.assignment was simple:make an application, usable by a person or company, that uses databases and VB.NET
so i started brainstorming and i came up with the following:a client-server application where the server runs on the company's mainframe and it's employees (seeing as it would be an IT company or another company that would use a lot of computer files) can upload to, and download files from, where each file would have a description and additional information (extension, date,emplyees would also be able to exchange private messages so that collegues of the uploader can be notifies that the file they would need is uploaded.
in addition to that there would be an administrator (or multiple) that can overview all PM's (make sure there's no abuse of the system) and administrate the files (delete/edit/...)So really, i have no idea where to begin building this application, so i would think that if i get the interface done, i atleast have an overview of what and how i would need to code.
note: wow now i think about it this seriously sounds more like a website than an application... but still it sounds like a good idea to me and has to be done or else i would not graduate
As my company migrates towards the .NET framework from VB6, it looks like we are going in the direction of WPF (my boss is in love with the Office-style Ribbon control). I've been working to mock one of our VB6 applications in WPF and decided to experiment with MVVM at the same time. I'm being discouraged from using an existing MVVM framework, so I guess I need to write my own. The biggest concern right now seems to be a method for registering and managing all my views from a central spot - a manager class - but I'm not exactly sure how to implement this.
View 4 RepliesWhen I use GetPixel(x,y) I get a string varible of this:
Color [A=000, R=000, G=000, B=000]
How do I convert this to a color?
I want to create some reusable code in my forms.The idea is that a class is growing when more subroutines are added so, I need to store the finished subs somewhere to make place for others, this way I don't lose myself searching through the entire class
View 4 RepliesI would like to convert a image query, found here [URL]..In vb2005.net to the xmldocument which I can then cruise around and grab the data with, current code using the webclient isn't giving me a good xml document to use. Any ideas how I can fix this?
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Correct the problems with this function, and then extend it so that it also returns a usable array of pointers to some structures.
The extended version of this function should: Maintain the same "char *" return type which returns a pointer to a usable, for storing a C string, memory buffer.
In addition, also return a usable array of pointers to structures. This array of pointers is of variable and random length, which must be obtained using GetNumberOfSomeSeqsToGenerate(), which is called, ONLY, from within this new extended version of the function.
The type of these structures and the function that should be used to get these structures are defined as follows:
typedef struct {
char* name; /* '\0'-terminated C string */
int number;
} SomeSeq;
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I have created a class (pasted below in case I did something wrong) for which I want to create an instance that is usable across forms/modules. I can create an instance of the class in a single form/module no problem via DIM User as New User but how do I go about create a public instance accessible from all parts of my program?
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How to comment multiple lines of code/block of code in VB?
View 5 Replieswhat im trying to do= make a program that will make multiple accounts
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ok what i type in textbox(es) "1" i want it typed on a "3"{a website=www.justin.tv/signup} when i hit the "2"[button1]i really dont have any idea what im doing i know ill need to have a webrowser to load the justin.tv/signup but i have no clue what the name of the boxes are called on the webpage