How do I check that I have an open network connection and can contact a specific ip address in c#? I have seen example in VB.Net but they all use the 'My' structure. Thank you.
If you just want to check if the network is up then use:
bool networkUp
= System.Net.NetworkInformation.NetworkInterface.GetIsNetworkAvailable();
To check a specific interface's status (or other info) use:
NetworkInterface[] networkCards
= System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();
To check the status of a remote computer then you'll have to connect to that computer (see other answers)
If you want to monitor for changes in the status, use the System.Net.NetworkInformation.NetworkChange.NetworkAvailabilityChanged event:
NetworkChange.NetworkAvailabilityChanged
+= new NetworkAvailabilityChangedEventHandler(NetworkChange_NetworkAvailabilityChanged);
_isNetworkOnline = NetworkInterface.GetIsNetworkAvailable();
// ...
void NetworkChange_NetworkAvailabilityChanged(object sender, NetworkAvailabilityEventArgs e)
{
_isNetworkOnline = e.IsAvailable;
}