I am using the code below to test whether the user is connected using either a wireless or LAN connection. i.e. that the cable is plugged in, or the wireless is switch off. The code works fine for this. However, if you can spot any potential problems with this or you know of a better way I would be interested to learn more.
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I am currently improving an existing handheld application, this app makes live calls to our network over the wireless connection, if the wireless connection is not established I am displaying a holding screen to the user, this screen rechecks connection every three seconds.I want to put a button on this screen that closes down the application if the user does not want to wait any longer. At the moment I am using the application.exit command, however it continues to finish the first original thread (i.e. trying to process the dataset) before actually closing the application, I am looking for a way to kill the application there and then!
View 2 Repliescode snippet to get active network card name, that is the network card currently connected to the internet in c# or vb.net?
View 5 Repliesi need help to do a simple chatting software which will use my wireless modem to send and retrive data.i must create a program something like MSN messenger.
View 1 RepliesI am attempting to write a program that will disable the Local Area Connection while leaving the Wireless connection enabled. My company is using net-books in our stores to demo air-cards and we need to keep them off of the LAN. I'm new to VB and VB.net, and it's been a while since I did any type of programming. I've gathered some code that others have posted in forums and tutorials and I'm working through a tutorial book, but I finally believe that I am stuck.
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Using VB.NET how do I connect to an available wireless network. I have been able to list all the available networks.
View 1 RepliesHow do I, programmicly, connect to a wireless network. I have already got with networks are avalible, now I'm looking into creating a 'Connect' button.
Here is the code I have:
Imports System.Text
Imports System.IO
Imports System.Net.Sockets
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how to detect a wireless network in .net?
View 1 RepliesI'd like to build a program which shares files between two computers. My method for doing that is setting up a home network, basically, on one computer, put a file there, and share that file on the network. The other computer would then connect to the network (through my application) and find the file and read it. I know this is very long. I would just like you to help me start up.How do I create a wireless network ENTIRELY THROUGH VB during the initial setup of the application? I don't want the user to deal with creating the network himself.
View 1 Repliesmay i know how to do about the sync between PPC and PC cross the wireless network?
or else got other idea about the retrieve the data from PC ?
I need to know how to find wireless network and connect to it.
i also need to know how to type in the network key before connecting.
I was woundering if it is possible to set the encryption key of a wireless network through VB.
If you need any more info just ask,
My issue, however, is connecting to the wireless laptops as well.
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I need to grab a list of all networked computers, and I definitely include systems on the wireless
network in that list. I'm just not sure how to approach this. Being able to enumerate through a
'tree' of all networks and systems available would be a major plus.
I have built a client-server VB.net inventory application for our company which connects to our Server machine running on Windows XP. We have 6 client machines running also on Windows XP that connects to the Server's database. Now, my problem is, "How do i connect a client machine running on Windows Vista to our Server running on Windows XP wirelessly?"
- Is there something I have to alter on the SQL Server Surface Area Configuration?
-Or do I have to change the 'Connection String' on my software application so as to properly connect to the Server from a Vista mahine? If then, how?
This is the error its throwing:"An error has occurred while establishing a connection to the server. When connecting to SQL Server 2005, this failure may be caused by the fact that under the default settings SQL Server does not allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) (Microsoft SQL Server, Error: 53)"
make a program intrusion prevention system in wireless network using method anomaly base detection
View 6 RepliesI have been using the code below to tell if the computer has an internet connection. It works fine on my home computer but when I run it at work on our network which has internet, it fails. I can go to the sites I use below in my browser but when this is run in my app, it returns false. Any ideas why? Is there a better way i should be checking?
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I would like to know can we use a socket connection on vb to communicate with PC without using GSM modem and SIM card.for example, like sendin a simple text msg to the PC and it will reply back the result back to me the result.
View 1 RepliesError message receiving 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) The project is written in VB.Net 2008. Production server uses SQL 2008, Dev Server uses SQL 2000. The application has been built and published.
Prod Connection String: strCN = "server=SGMAGNCPQ03.;Initial Catalog=APO_Tax;Integrated Security=True"
Dev Connection String: strCN = "server=S04423711940995.;Initial Catalog=APO_Tax;Integrated Security=True"
The Problem: When I change the connect string from dev back to prod and try to run my app, I get the above error message. If I reboot everything works fine but if I switch the connect string from prod to dev and try to go back to prod, I'm back to the same problem.
How could i get name of Active exe on Network pc?
View 1 RepliesHere is my idea so far: I have a bunch of computers connected in a local network. One of them is a MySQL server, one will have a vb.NET program wich will act as a "second server" and the rest will be different clients. What I want to do is that the "second server" will send out some kind of message or network package to some of the clients in the network, and they will execute a code based on what message it is, or what kind of package it is. I'll give you a simple example:
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I'm writing a console app to take care of our automated user creation process which was previously done by a batch file. I need to check if a users network share exist on any of 38 servers but seem to be having trouble finding info on how to do it. From what i can tell i need to use the netapi32.dll and the NetShareCheck function, but i'm not sure how to do it.
this is what i have so far, but it isn't working as it should. it seems to be returning 2311 in almost all cases exept if i use uppercase on the server and device and the device starts with C.
Imports System.Runtime.InteropServices
Public Class NetApiWin32
Declare Unicode Function NetShareCheck Lib "netapi32.dll"
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How to check if network adaptor is existing in pc or is not exist? (VB.NET sample)
View 3 RepliesI am attempting to call a remote modem using a local modem connected via USB. Programming language is VB.NET and I am using the SerialPort control to talk to the modem.
Communication is as follows:
I send: ATZ0[CR]
Modem responds: ATZ0[CR][CR][LF]OK[CR][LF]
I then try to dial a number:
I send: ATDTnnnnnnnnnn[CR] where nnnnnnnnnn is a valid number
The modem responds with:ATDTnnnnnnnnnn[CR][CR][LF]ERROR[CR][LF]
All other commands seem to work without any issues
For info the modem is a MultiTech MT5634ZBA-USB-V92
If I use hyperterminal and type the same commands in it works as expected and dials the number, so it must be something I am doing in my code, possible some setup in the SerialPort control
I am a new member that has just start coding. Im currently working on a small application for a desktop that will give me information from my system. I have code that works but might not be great. I have code that checks that the network is connected but need it to keep checking and updating. I Have tryed loops, goto and timers but not having any luck. Can anyone help point me in right direction. Here is my code so far.
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text = TimeOfDay
Label8.Text = "Time :"
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I am using a third party OPC library.I have a routine that basically checks that the connection to OPC is active and if not, waits 10 seconds and reinitializes by calling a .disconnect / .connect on the third party library's object.The OPC connection somewhere in its chain is using a com object that dislikes this behavior due to the object belonging to another thread.Ordinarily I would invoke a delegate to get the call back on the correct thread, however this base class does not implement ISSynchronizeInvoke.
Is there another way to make sure a a call to to an objects methods occur on the thread they were created on from within a system.timers.timer which is obviously running on another thread?Error message is: "The application called an interface that was Marshalled for a different thread. (RPC_E_WRONG_THREAD)"I know, kind of vague without a whole LOT of sample code, looking for pointers on where to even begin looking.
I can't populate my combobox with ANYTHING I code, and I don't like the click and pull system. it compiles, no exceptions, but it still doesn't populate my combo... this is the code
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What is the best way to check if a web service is up and active? I realize there are many different factors to this, but I would like to do something simple before sending data, like at the moment the proxy is constructed to see if the service is able to be connected. I am coding in vb.net.Is there even a best practice for this type of comm?
View 1 RepliesI've project where i wanna check if user is connected to internet if he isn't then form must close and another form should show up ! Problem i'm getting is i can't use check it constantly, even if i use while loop
keep looping the following code until condition is wrong or until connection is made
While IsConnectionAvailable() = False
' code goes here for when connection to hotflask can't be made[code].....
but here form 2 keep showing up and it crashes system, is there any simple way to do it .
(from scratch as I've not done this before) how I can stream live through modem-to-modem connection. The modem here refers to dial-up modem (PSTN modem), there is no internet/lan involved.It will be 2 programs, the first is to transmit real-time video from webcam, and the second is to remote video from the first.
View 5 RepliesI have a connection string (which works fine) to connect to AD through my web application in my web.config. Traditionally, however, I've created a new connection to pull info. from the user after login like so:
Using adDirectory as New DirectoryEntry("LDAP://OU=myou,DC=mydc,DC=dc,DC=com")
Dim adTicketID as String = ticket.Name
myVar = "adDirectory.Children.Find("CN=" & adTicketID).Properties("myproperty").Value
End Using
It seems that I should instead use the connection from the web.config like so:
Using ADCS as New DirectoryEntry
Dim adTicketID as String = ticket.Name
myVar = "adDirectory.Children.Find("CN=" & adTicketID).Properties("myproperty").Value
End Using
Is this possible? How would I accomplish it so that I don't need to constantly create new directoryentries?