如何检查互联网连接是否丢失 WP7

Question

How can I check if internet connection was lost in WP7.I'm developing social app and if internet connection was lost I have FileNotFoundException.I can't use try/catch because its doesn't prevent my app from closing with exception.Also if (NetworkInterface.GetIsNetworkAvailable()) works only from time to time and not always shows the truth.

Answer 1

The only reliable way I have found is to ping something reliable. My customer set up a "ping" call on the server that I need to access, which is the ultimate test. If I can reach that call, I can (or shoule be able to) reach any of them.

Answer 2

        bool isAvailable = NetworkInterface.GetIsNetworkAvailable();
        if (isAvailable == false)
        {
            //Logic here
        }
        else
        {
             //Code
        }

It works all the time for me...

Answer 3

NetworkInterface.GetIsNetworkAvailable() doesnt seem to work correctly all the time. Its better to use WebClient object to download some URL which you are sure is available always.

Answer 4

@Francesco: I think you are right, NetworkInterface.GetIsNetworkAvailable() works fine on phone, but its unreliable on emulator.