I need to check whether If the Internet Connection Is available or not
If My.Computer.Network.IsAvailable = True Then
Return My.Computer.Network.Ping("8.8.8.8")
Else
Return False
End If
Above code returns Whether the PC connected to the internet, But I can't Check It through out the Software, I am only Having Single Form.
Im trying to check my internet connection using just a button how do i do that?
View 2 RepliesI'm writing a Silverlight 4 application and would like to check when opening the installed out of browser application, whether there is a valid internet connection (to then download some data from my website). I realise that I could put a try catch around a WebRequest but that seems a bit hacky to me.
EDIT: What I meant by valid internet connection is just connected to the internet
How I can check if the internet connection is working or not? i have to check every few seconds without getting stuck.
View 9 RepliesThis is the work of one responder for the most part, and is not indicative of the quality of most of the posts.But you can judge that for yourself.
If you are writing a program that is used to monitor the status of your network, then this thread may not be of interest.
If you are an application programmer that uses network resources to accomplish your goal, i.e. you are using SMTP, FTP, HTTP, NNTP, NTP etc., and you think that you need to check for a connection first, then read on.Follow up to this.Before getting all geeky let's take a little detour...
Five days a week I get up, eat breakfast, check my email, forums, etc., take a shower, get dressed, and then drive to school.Many of you probably have a similar routine.What is interesting about that is not what we do, but what we dont do,because of our expectations and experience.Here is what I dont do.
I dont stick my finger in the electrical socket to see if there is electricity for the coffee maker and toaster.I dont fire up the command prompt and ping some host on the internet to see if I have connectivity.I dont check the battery, tires, water level, clutch fluid level, washer fluid level, etc.,before I drive off.
All of that is based on expectation and experience.So why would you write an application that pings the internet before it did something (SMTP, FTP, HTTP, NNTP, NTP etc)???? Is your experience or expectation that the network will be down?To illustrate and hopefully convince you that, like Oblio, it is pointless, create a new form with three buttons. In the following examples I use a WebRequest / WebResponse as my 'Something'.Here is what some think is a good approach, the classic ping-then-do, what I think you shouldn't do.[code]....What is wrong with this code is that all of the network IO is being done without a Try / Catch block.
We want to developed services to sending fax which should check internet connection after every 10 sec and should be work on all windows operating system.
I cannot use any host like[URL]..to check internet connection because it increase network traffic.
You know in windows, it says your connection speed down in the toolbar. How can I find this programmaticaly in vb.net?
Here is my code to get internet connectivity
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]......
What is the best practice way of detecting internet connection?
From Windows Vista onwards, a status is set in windows that is displayed in the task bar. However, I cannot call this function/api/whatever, since some of the client pc's are still on xp, and only due for upgrade in 18 months.
so do i use and request something like [url]... to try and see it it works, and on the catch block set the return value to false, or is there another way?
Second part of this question, If no network connection is available, I can use [url]... to dial a connection. Will this use internet explorer's settings, or dial the connection marked as default in DUN?
Public Sub Life(ByVal AnyEvent As Object) Dim myNewLife As New Life Dim Happiness As New Collection Happiness.Add(AnyEvent) myNewLife.Experience(Happiness) End Sub
In MC65, SIM card is already inserted. Any web site can be browsed.
In my application, there is sending email feature using Rebex. Sometimes, it cannot send email. So I tried to browse IE and I'm beware if 3G connection signal appears, sending works properly.
Around connection signal on Screen, there is "H" symbol. What is it?
For my case, it's not good to switch 3G connection by browsing IE. how to handle it.
I'm being able to connect to mysql database in localhost. But not able to connect in my server?
View 1 Repliesis there a way I can proxify my application's connection to the internet??
I want it to be able to select a random proxy from a list of proxy IP address in a text file.
I just can't seem to establish a connection between my two P2P applications over the internet(LAN works perfectly fine).
I have tried the following.
- Disabling Firewall
- Changing Port
The only way I can establish a connection is if I'm connecting to the same computer using the universal IP or the local. Does anyone have a fix for this? Oh and here is the error that I receive when trying to connect over the internet:
System.Net.Sockets.SocketException: No connection could be made because the target machine actively refused it 255.255.255.255:8787
at System.Net.Sockets.TcpClient..ctor(String hostname, Int32 port)
at P2P_Client.Form1.Msgtxt_KeyDown(Object sender, KeyEventArgs e) in C:\Users\Administrator\Documents\Visual Studio 2008\VB Projects\P2P-Client\P2P-Client\Form1.vb:line 32
I'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 .
i have developed a little application, which send email to me, it works on direct internet / dsl , but when i run my programm on a pc where the internet access has used a proxy server for clients, my application show a error that could not find host, and failed to send email
View 2 Repliesis there a way I can proxify my application's connection to the internet??I came accross System.Net.WebProxy. Here is what I have with it so far:
Dim pr As New System.Net.WebProxy(proxy)Can I set the value of proxy to equal something like 127.0.1.2:80 or do I need to split it into the address and port?Also how do I force my application to connect to the internet through that proxy? Because this is ithe part that is really baffeling me.
In a picturebox/image control (WPF) how can I set an image which displays when there isn't an internet connection?
Basically, I have the picturebox image set to an image online (ie www.example.com/example.png). But how can I set an image to display when there is no internet connection?
Using - VB2008 Express, XP Pro,
Connecting to SQL 2005 across the internet
The walk throughs have several good explanations although I don't see any about connecting over the internet.
I have an app that gets all the network computers on a local network. Is there any way to block the connection of a computer by the IP/host name? I want to manage my wireless connection at home so that no one can steal my signal.I would use this app on the computer connected to the wireless router.Anyhow, is this possible? Isn't it? Many online games ban the players by IP, so I thought it could be done.
View 4 RepliesI have a form that contains a picturebox and in form_load event it gets a picture from a website with already known link..[code]and it works okay when the user is connected to the internet but it shows an error and it will stuck there if it's not connected..What should i do in this case..Should I ignore if there is no connection or is there anything else I could do ??Or what could I add to my code ??
View 4 RepliesI am using this code to test for an internet connection. As my application will have to login to a web server. However, if the user internet connection was to fail or cable pulled out. I will have to notify the user.
Ping www.google.com to check if the user has a internet connection.Public Function PingTest() As Boolean Dim ping As New Ping()Dim pingStatus As PingReply = ping.Send(IPAddress.Parse("208.69.34.231"))
[Code]...
The only way I think I can test for an Internet connection is to ping www.google.com. So I have a used a server timer which I have set for 1/2 second and in the lapsed event it will call this ping function. If the ping returns false. Then my app will take appropriate action.
Do you think using google as a way to test an Internet connect is a good thing. If google was to fail, then my app would not function. Is polling 1/2 second to much or too little? Just wondering about my whole idea if it is good or not?
I'm trying to calculate Internet connection i have used this [code]...
View 3 RepliesI am currently porting (well really totally re-writing) a project to run on WM6 devices. I need to initiate a GPRS data connection (or any internet data connection really, shouldn't matter if its GSM or CDMA) before I can get the data I need (actually sync. a database over the cell network - Sybase via Mobilink) because right now its basically saying I have no network connection when I make the call to sync the db.
If I open Internet Explorer on the device, it initiates the data connection, and I can then go back into my program and get the data no problem. This isn't an acceptable solution however.
How can I initiate the internet data connection?
I need to make a web browser that uses my home internet connection from anywhere.I plan to have the web browser connect to my router/computer where it will request the desired web pages and have the page data sent back to the browser client. The browser must only have a connection with my IP, and not request the web pages from their web URL.How can i do this and what will i need to set up on my home computer?
View 5 RepliesI needa way through the visual basic code / project tomeasure download and upload s
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?
[Code]...
Is there a way to register VB2010 express without an internet connection? My days are diminishing!
View 9 RepliesI've added a database to my application with 2 fields:"ip" address and "started" that holds the number the application was started from that specific IP.I want to upload the database to my site hosted at google.sites. When the program is started it should make a connection with the following cases:
1-no connection with the database (possible no internet available) - it should display an error message
2-there is connection, the IP is not stored on the database, it addes the IP to the database and the field "started" with the value 1
3-there is connection, the IP is stored on the database, it increments the field "started" by 1
Question for all of the more experienced programmers out there. I am working on a program with a tab control. One tab will hold a webbrowser control within it. What I am trying to accomplish to have it pull a specific url from my website to the webbrowser control if the person is connected to the internet, BUT if they don't have a internet connection at the time, I would like to display a local html file instead
View 4 RepliesIn my application i have integrated SMS functionality using HTTP. Due to unstable internet connection, sometimes it so happens that the SMS failed to get delivered. how to queue these unsent SMSs and send it later when the internet connection is restored?
View 9 RepliesHow can I check for internet connectivity? I can't use the My.Computer.Network.IsAvailable, because that one returns true also when you only have a local network connection and no internet connection.
View 10 Replies