Using ping in c

Question

When I Ping a remote system with windows it says there is no reply  but when I ping with c  it says success  Windows is correct  the device is not connected  Why is my code able to successfully ping when Windows is not   Here is my code    Ping p1   new Ping    PingReply PR   p1 Send  192 168 2 18       check when the ping is not success while   PR Status ToString   Equals  Success          Console WriteLine PR Status ToString         PR   p1 Send  192 168 2 18         check after the ping is n success while  PR Status ToString   Equals  Success          Console WriteLine PR Status ToString         PR   p1 Send  192 168 2 18

User · Answer

Imports System Net NetworkInformation   Public Function PingHost ByVal nameOrAddress As String  As Boolean     Dim pingable As Boolean   False     Dim pinger As Ping     Dim lPingReply As PingReply      Try         pinger   New Ping           lPingReply   pinger Send nameOrAddress          MessageBox Show lPingReply Status          If lPingReply Status   IPStatus Success Then              pingable   True         Else             pingable   False         End If       Catch PingException As Exception         pingable   False     End Try     Return pingable End Function

User · Answer

private async void Ping Click object sender  RoutedEventArgs e        Ping pingSender   new Ping        string host     quot stackoverflow com quot       await Task Run      gt            PingReply reply   pingSender Send host            if  reply Status    IPStatus Success                         Console WriteLine  quot Address   0  quot   reply Address ToString                 Console WriteLine  quot RoundTrip time   0  quot   reply RoundtripTime               Console WriteLine  quot Time to live   0  quot   reply Options Ttl               Console WriteLine  quot Don t fragment   0  quot   reply Options DontFragment               Console WriteLine  quot Buffer size   0  quot   reply Buffer Length                       else                        Console WriteLine  quot Address   0  quot   reply Status

User · Answer

using System Net NetworkInformation       public static bool PingHost string nameOrAddress        bool pingable   false      Ping pinger   null       try               pinger   new Ping            PingReply reply   pinger Send nameOrAddress           pingable   reply Status    IPStatus Success            catch  PingException                   Discard PingExceptions and return false            finally               if  pinger    null                        pinger Dispose                         return pingable

User · Answer

private void button26 Click object sender  EventArgs e        System Diagnostics ProcessStartInfo proc   new System Diagnostics ProcessStartInfo        proc FileName     C  windows system32 cmd exe       proc Arguments     c ping -t     tx1 Text            System Diagnostics Process Start proc       tx1 Focus       private void button27 Click object sender  EventArgs e        System Diagnostics ProcessStartInfo proc   new System Diagnostics ProcessStartInfo        proc FileName     C  windows system32 cmd exe       proc Arguments     c ping      tx2 Text            System Diagnostics Process Start proc       tx2 Focus

User · Answer

Using ping in C  is achieved by using the method Ping Send System Net IPAddress   which runs a ping request to the provided  valid  IP address or URL and gets a response which is called an Internet Control Message Protocol  ICMP  Packet  The packet contains a header of 20 bytes which contains the response data from the server which received the ping request  The  Net framework System Net NetworkInformation namespace contains a class called PingReply that has properties designed to translate the ICMP response and deliver useful information about the pinged server such as    IPStatus  Gets the address of the host that sends the Internet Control Message Protocol  ICMP  echo reply  IPAddress  Gets the number of milliseconds taken to send an Internet Control Message Protocol  ICMP  echo request and receive the corresponding ICMP echo reply message  RoundtripTime  System Int64   Gets the options used to transmit the reply to an Internet Control Message Protocol  ICMP  echo request  PingOptions  System Byte     Gets the buffer of data received in an Internet Control Message Protocol  ICMP  echo reply message    The following is a simple example using WinForms to demonstrate how ping works in c   By providing a valid IP address in textBox1 and clicking button1  we are creating an instance of the Ping class  a local variable PingReply  and a string to store the IP or URL address  We assign PingReply to the ping Send method  then we inspect if the request was successful by comparing the status of the reply to the property IPAddress Success status  Finally  we extract from PingReply the information we need to display for the user  which is described above       using System      using System Net NetworkInformation      using System Windows Forms       namespace PingTest1               public partial class Form1   Form                       public Form1                                 InitializeComponent                               private void button1 Click object sender  EventArgs e                                Ping p   new Ping                    PingReply r                  string s                  s   textBox1 Text                  r   p Send s                    if  r Status    IPStatus Success                                        lblResult Text    Ping to     s ToString           r Address ToString             Successful                             Response delay       r RoundtripTime ToString       ms      n                                                private void textBox1 Validated object sender  EventArgs e                                if  string IsNullOrWhiteSpace textBox1 Text     textBox1 Text                                              MessageBox Show  Please use valid IP or web address

[c#] Using ping in c#

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