ping网络

System.Net.NetworkInformation.Ping p = new System.Net.NetworkInformation.Ping();
System.Net.NetworkInformation.PingOptions options = new System.Net.NetworkInformation.PingOptions();
options.DontFragment = true;
string data = "abc";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 1000;
System.Net.NetworkInformation.PingReply reply = p.Send("www.google.com", timeout, buffer, options);  

reply.Status.ToString()为‘Success’表示成功