ping命令代码查看主机连通状态

/// 

/// 是否能 Ping 通指定的主机
/// 
/// ip 地址
/// true 通，false 不通
public bool Ping(string ip)
{
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 = "Test Data!";
byte[] buffer = Encoding.ASCII.GetBytes(data);
int timeout = 1000; // Timeout 时间，单位：毫秒
System.Net.NetworkInformation.PingReply reply = p.Send(ip, timeout, buffer, options);
if (reply.Status == System.Net.NetworkInformation.IPStatus.Success)
return true;
else
return false;
}

程序代码方式判断网内机器是否开机，网络是否通的！