The popular C# Ping Utitility

UPDATE:

In C# 2.0 or later, just use the System.Net.NetworkInformation.Ping class:

static void Main (string[] args)
{
System.Net.NetworkInformation.Ping ping = new System.Net.NetworkInformation.Ping();
ping.PingCompleted += new System.Net.NetworkInformation.PingCompletedEventHandler(ping_PingCompleted);
ping.SendAsync("127.0.0.1", null);
}

static void ping_PingCompleted(object sender, System.Net.NetworkInformation.PingCompletedEventArgs e)
{
if (e.Reply.Status == System.Net.NetworkInformation.IPStatus.Success)
{
System.Diagnostics.Debug.WriteLine("Reply received.");
}
else
{
System.Diagnostics.Debug.WriteLine("Host unreachable…");
}
}

A google search will bring this article from C# Help up, since many have copied it: 

C# Ping Utitility

Ouch… this is a lot of code just to check if a host is up or not. I’m baffled as to why it isn’t in the framework. Perhaps I need to check out 2.0. In the mean time, the WMI Ping provider is more C# code friendly (notice I didn’t say better performance).

Here is some code for those who care not about sockets, performance or geek factor, but do want some clean, maintainable code:

private bool isMachineReachable(string hostNameOrIP)

{

string wqlTemplate = "SELECT StatusCode FROM Win32_PingStatus WHERE Address = ‘{0}’";

System.Management.ManagementObjectSearcher query = new ManagementObjectSearcher();

query.Query = new ObjectQuery(String.Format(wqlTemplate, hostNameOrIP));

query.Scope = new ManagementScope("//localhost/root/cimv2");

ManagementObjectCollection pings = query.Get();

foreach(ManagementObject ping in pings)

{

if( Convert.ToInt32(ping.GetPropertyValue("StatusCode")) == 0)

return true;

}

return false;

}

 

Filed under: Administration