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PingReply Class

Provides information about the status and data resulting from a Send or SendAsync operation.

Namespace:  System.Net.NetworkInformation
Assembly:  System (in System.dll)

public class PingReply

The Ping class attempts to send an Internet Control Message Protocol (ICMP) echo request to a remote computer and receive information back from the computer via an ICMP echo reply message. The Ping class uses instances of the PingReply class to return information about the operation, such as its status and the time taken to send the request and receive the reply.

The Send methods return instances of the PingReply class directly. The SendAsync methods return a PingReply in the PingCompletedEventHandler method's PingCompletedEventArgs parameter. The PingReply is accessed through the Reply property.

If the value of Status is not Success, you should not use the values returned by the RoundtripTime, Options or Buffer properties. The RoundtripTime property will return zero, the Buffer property will return an empty array, and the Options property will return null.

The following code example demonstrates using Ping class to send an ICMP echo request synchronously and display the response.

using System;
using System.Net;
using System.Net.NetworkInformation;
using System.Text;

namespace Examples.System.Net.NetworkInformation.PingTest
    public class PingExample
        // args[0] can be an IPaddress or host name. 
        public static void Main (string[] args)
            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 (args[0], timeout, buffer, options);
            if (reply.Status == IPStatus.Success)
                Console.WriteLine ("Address: {0}", reply.Address.ToString ());
                Console.WriteLine ("RoundTrip time: {0}", reply.RoundtripTime);
                Console.WriteLine ("Time to live: {0}", reply.Options.Ttl);
                Console.WriteLine ("Don't fragment: {0}", reply.Options.DontFragment);
                Console.WriteLine ("Buffer size: {0}", reply.Buffer.Length);
#using <mscorlib.dll>
#using <System.dll>
using namespace System;
using namespace System::Net;
using namespace System::Net::NetworkInformation;
using namespace System::Text;

// args[1] can be an IPaddress or host name.
int main ()
    String* args[] = Environment::GetCommandLineArgs();

    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 = S"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
    Byte buffer[] = Encoding::ASCII->GetBytes (data);
    int timeout = 120;
    PingReply* reply = pingSender->Send (args[1], buffer, timeout, options);
    if (reply->Status == IPStatus::Success)
        Console::WriteLine (S"Address: {0}", reply->Address->ToString ());
        Console::WriteLine (S"RoundTrip time: {0}", __box(reply->RoundTripTime));
        Console::WriteLine (S"Time to live: {0}", __box(reply->Options->Ttl));
        Console::WriteLine (S"Don't fragment: {0}", __box(reply->Options->DontFragment));
        Console::WriteLine (S"Buffer size: {0}", __box(reply->Buffer->Length));


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0