c# check remote computer is online

// using System.Management; private static bool IsMachineOnline(string hostName) { bool retVal = false; ManagementScope scope = new ManagementScope(string.Format(@"{0}rootcimv2", hostName)); ManagementClass os = new ManagementClass(scope, new ManagementPath("Win32_OperatingSystem"), null); try { ManagementObjectCollection instances = os.GetInstances(); retVal = true; } catch (Exception ex) { retVal = false; Console.WriteLine(ex.Message); } return retVal; }

// using System.Net.NetworkInformation;
private static bool IsMachineUp(string hostName)
{
    bool retVal = false;
    try
    {
        Ping pingSender = new Ping();
        PingOptions options = new PingOptions();
        // Use the default Ttl value which is 128,
        // but change the fragmentation behavior.
        options.DontFragment = true;
        // Create a buffer of 32 bytes of data to be transmitted.
        string data = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
        byte[] buffer = Encoding.ASCII.GetBytes(data);
        int timeout = 120;
 
        PingReply reply = pingSender.Send(hostName, timeout, buffer, options);
        if (reply.Status == IPStatus.Success)
        {
            retVal = true;
        }
    }
    catch (Exception ex)
    {
        retVal = false;
        Console.WriteLine(ex.Message);
    }
    return retVal;
}

Posted by: Guest on January-21-2021

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