When I try to run a program I've written from a network drive on a windows server 2008 machine it always gives me: Open File - Security Warning The publisher could not be verified. Are you sure you want to run this software? Unknown Publisher This file does not have a valid digital signature that verifies it's publisher.... I need this message gone.
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Multi-User Chat Program (Server & Client) with Main Server?
View 1 RepliesBack up my entire database using vb.net. I'm using SQL Server 2008 R2 for my DB.
View 39 Repliesis it possible to build "vnc enabled" programs using .net?The idea would be to allow several threads of some custom program to be controlled by different persons.
View 5 RepliesI'm following this example:
[URL]
I've basically converted the classes to VB.Net. Now when it says create an application to call the wrapper class called Program I get lost.
How do I call that class from my application that I want to embed sql server express with?
I want to select just the Year from that DOB and display that on a Listbox (or any appropriate interface on a page). We are not using SPs. So I will probably coding SQL directly from the page or using SQL datasource. Using LINQ is alright if that can be done in it
View 4 Replieshow do I deploy a SQL server database program to a machine thats I don't know the name of the machine. tried using "server (local)" but still.
View 6 RepliesI am starting design of a program that needs to run no matter if the user is logged in to the PC or not. So I will be writing it as a VB.Net Service.
As I am not overly familiar with SQL Server Express, is it possible to connect to a local SQL Server Express Instance and access the database from a VB.Net Service while the user is not logged in to the PC?
I'm getting a really strange error. I have a program that needs to run a thread on startup, and for some reason when I do myThread.Start() in Form1() it will crash with "program is not working" (But only on Windows Server, not on my local machine!). However, if I put the same code under button1_Start() it works no problem. What gives?
EDIT A little extra information: In my thread I have a line of code that uses invoke
Invoke(new Action(() => richTextBox1.AppendText(string.Format("Updating {0}..
", DateTime.Now))));
And for some reason the crashing goes away after I make the thread sleep for 2 seconds before it starts executing. Am I using the right method to execute code on the app startup?
I made a simple TCP server (I've found the example on the web) in VB to receive data from about 40 TCP clients.The clients are not synchronized but sends data about every 18 minutes; the problem is sometimes several clients sends data at the same moment, so I can't receive data.I also made a second program that reads the data (server program writes data on a file, read from the second program) scheduled.
My question is this: I've seen on the web examples about Multithreaded Server Socket Program, so I suppose this could manage my 40 clients (but now the clients are syncronized and send data at the same time in client mode) or is better get data (I have a central client that asks data to all 40 devices in server mode)?
Second question: can I make a single program where I run both TCP client and TCP server at the same time?
I am creating a very simple Voting System, that will be use on electing new set of officer in a teacher cooperative...
So I have to create two separate program, a Server Program that will manage all the information in the election and a Client Program where voters will vote their selected candidate...
The election officers wanted that the Server Program will display the Voting Results at real time... So when the Voter finished voting, The Voting Result displayed by the Server Program will also be updated every time the Client Program Insert the data to Database....
An action listener in Server Program that will execute if new data is inserted in a Table in the Database made by the Client Program...
I'm using the TcpClient and TcpListener classes to read/write to the network when a request comes in on port 25. All I'm trying to do at the moment is make it so that my server program can receive SMTP messages from other SMTP servers. I've tested in Telnet - if I connect to my own IP on port 25 and type EHLO, MAIL FROM, RCPT TO, DATA etc then all works as it should and the details I entered are logged by the program (it doesnt do anything about delivering these details/email yet).all looks good... but then when I try and just send an email to my domain from my work account I can see that a connection is made to my program and the string "EHLO workdomain.com " is received by my program - my program responds to the remote SMTP server with "250-mydomain.com Hello" and then a CrLF and then "250-OK". After that point however, my app does not receive anything further at all from the server at work. I'm guessing I am doing something wrong with the data I'm returning when it sends EHLO but can anyone point me in the correct direction?
I was using telnet to test with, it seems that I have made it work only with telnet.In telnet each time I type a key the data is passed to the server, however with a real SMTP server it just sends each entire command in one go. So after altering my server a little I can now get it to respond with the 250-OK which I thought it already was doing.. but it still doesnt work. The remote server just sends EHLO and then thats it nothing more.Something interesting, at the moment I am ending all of my responses to the remote server with VbLf - if I change this to VbCrLf (which is what I believe it is meant to be according to the SMTP standard) then I get an infinite amount of empty strings sent to my program (or perhaps some other character that just shows as an empty string in intellisense when stepping through the code). Changing it back to just vbLf or ControlChars.Lf makes it go back to just sending EHLO and then nothing else..
i'm tying to send email in my application directly by the smtp server but the server doesn't allow me to do that.The application its used by everyone in the company, so i set the smtp client UseDefaultCredentials to True, but the server replies with this when i try to send an email:[code].....If i set the credentials by hand, the server sends the email. So my problem is how to make this work to everyone? I don't want to have one public/friend var all time in the application with the credentials of the current user?
View 9 RepliesCase : I'm creating an application (desktop application) with VB.NET (actually windows form), and using SQL Server Express 2008 for its database.
[Code]...
I have developed a VB.NET program using a strongly typed dataset. This dataset has its connection to a SQL Server 2008 R2. The software should now be additionally used offline. The database should be exported to a *.sdf database. If no connection to the SQL server is produced, the software have to try to connect to the *.sdf database.I would like to achieve:
1. Export the data in the SQL Server 2008 R2 database to a local *.sdf file.
2. This *.sdf file has to work as an alternate connection string in the strongly typed dataset.
I have simple code that connects to Sql database... (well it doesn't)
VB
Dim objConn As New SqlConnection("Server=localhost;uid=***;pwd=***;database=***")
objConn.Open()
ERROR MESSAGE:A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)But looks like something is wrong with "localhost" thing. Any help? Where can I get name of (my) server?
We are currently using Access 97 as our database. This resides on the remote farm server (which is a Windows 2008 R2 server). We are using a front end vb6 exe which accesses the back end data.Occasionally we are getting corruption to our database and we have to make sure everyone exits the software to allow us to repair/compact it. There are 2 physical servers, each running 2 virtual machines. When the user logs onto the farm using RDP, they go to one of these 4 virtual machines.We are getting all kinds of corruption, some where # characters have been inserted into the top of one table, some where the indexes are corrupted, and some where access needs to repair the database.
View 1 RepliesThe 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
[CODE]...
Code:
Imports System.Net.Sockets
Imports System.Text
Public Class Form1
[CODE]...
We recently upgraded our job server to Windows Server 2008. We have jobs we run manually in a folder (c:Custom Programs). Some programs are console programs others are have a gui. This one program has a gui.It also has a progress bar that shows the progress of the job when you click the go button. Of course it spawns a thread to do the processing. This thread creates a log file to write errors and other things too.
The problem is when the program goes to create the log file an access not authorized error is thrown. I checked the permission on the folder. All users are allowed to create/edit/append/execute. Pretty much everything except take ownership. Also, there's nothing that denies anything. So I see no reason why this isn't working. We can get this to work by using the run as administrator option when we first run the program. However, we don't view this as unacceptable solution. My only thought is the spawned thread isn't getting the same permission set as the program. Am I correct or does something think it's something else.
[Code]...
I have recently found some code online for a chat application that allows multiple users to connect and talk to one another using a basic server, however I want to build on that and make an IRC like program that will allow me to have multiple channels (eg.Sports, Music, Gaming) etc. I was wondering if anyone could give me a hand because I have been playing with this for about two weeks now and I still havnt been able to figure it out.
The server code is:
Imports System.Net.Sockets
Imports System.Text
Module Module1
[code]....
I'm trying to connect to a SQL server from VB. The SQL server is across the network uses my windows login for authentication.[code]...
View 5 RepliesHow we can delete any row in vb.net through sql server
View 2 Repliesi want to learn this kind of program.. and this are my problems:
1. i dont know how to connect my vb.net program to sql server?? can you help me.
2. how can i call my fingerprint scanner to my vb.net program.
3. how can i input the time eveytime the employee's touch the scanner ( log-=in and log out)
I'm a starting programmer, and for school I need to make a project.We need to make mastermind in VB.net.I already have one part of the task, (make it work singleplayer)but, we must make it possible to run the program with a sort of server, so 2 people can play witch each-other.I've worked hard on my multiplayer game, but if I want to startup my multiplayer I receive some strange message:url...The zip contains the server(we got that from our teachers), and my project.
View 2 RepliesI do have a program that uses MS SQL Server as database. The problem is that when the fire wall of the server is on, I can't connect on the server. But when i turn it off, it works! This is the connection string I'm using:
myCN.ConnectionString = "Integrated Security=SSPI; Persist Security Info=False; Initial Catalog=BIOMETRICS; Data Source=SERVER"
myCN is a SQLConnection...Please if can help me with regards on this problem.
I have copied some code from the MS website which should run a DTS. The code runs without error and the event messages are as expected. But the DTS does not actually run. I can return information from the DTS such as the description and step name, but the exeution is not actioned.[code]...
View 2 RepliesI have been working on a server and client tcp/ip program and am having some issues. I start the server and then start the client, and the connection always fails. I don't know what's going wrong. Here's the
Server:
Imports System.Net
Imports System.Net.Sockets
Imports System.IO
[Code]...
Im writing a program that does some general network stuff
i need to set a dns server for the program/current sub "not for the current host pc"
something along the lines of
system.net.dns.setdnsserver = (myspecifiedip)
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 RepliesI am using this connection string to connect to my database and still it won't connect[code]....
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