Check internet connection is active or not ?

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Hii,

how to check internet connection is available or not ?

i want to like CHECK internet connection is lost.
that time my windows base application popup windows "Your internet connetion is lost. "

AND my system in domain. "xyz.local"

thank you ,

Posted 7-Feb-14 0:35am

RKparmar

Updated 7-Feb-14 2:39am

v2

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Ahmed Bensaid · Answer 1 · 2014-02-07T00:38:00

Solution 1

http://stackoverflow.com/questions/2031824/what-is-the-best-way-to-check-for-internet-connectivity-using-net[^]
http://stackoverflow.com/questions/20309158/c-sharp-checking-internet-connection[^]

Posted 7-Feb-14 0:38am

Ahmed Bensaid

Stephen Hewison · Answer 2 · 2014-02-07T00:39:00

Solution 2

To do this I have a HelloWorld HttpHandler registered on a WebServer.

This is a simple handler with a simple HelloWorld response.

I use the WebRequest object to call this handler. If I get the HelloWorld response then I'm online.

Posted 7-Feb-14 0:39am

Stephen Hewison

MashaJoey · Answer 3 · 2014-02-10T01:37:00

using System.Net.Sockets;

public Form1()
{
InitializeComponent();

//Calling method to test if connected .
Method();
}

private bool Method() //Third way, slightly slower than Method 1
{
try
{

//Tes for internet connection.
TcpClient tcpClient = new TcpClient("www.codeguru.com", 80);
//Provides client connections for TCP network services

//close if conneted.
tcpClient.Close();

//write what ever to want it to do here

//show value of connected or disconnected.
pbConnection.Value = 80;
lblLable.Text = "Connected ";

//MessageBox.Show("Connected");
return true;
}
catch (System.Exception ex)
{
//if not connected
lblLable.Text = "Disconnected";
return false; //Not connected
}
}