Ping using vb.net/asp.net

[aikeith]

Anyone know how to ping a server and get back up/down results using vb.net?

 

Thanks.

[Datahighway]

Hi aikeith,

try this.

       Dim tcpClient As New TcpClient()
       Dim myIP As IPAddress = IPAddress.Parse("192.168.0.254")
       Try
           'You can change the Port 80 to whatever port you wish to hit (i.e.8080)
           tcpClient.Connect(myIP, 80)
           MessageBox.Show("Ping is OK")
       Catch err As Exception
           'Do what you want in here if the ping is unsuccessful
           MessageBox.Show("Ping is not  OK")
       End Try

 

[edit]Changed < > tags to [ ] [/edit]

Edited January 24, 2003 by Robby

[Robby]

In case you're not sure of which libraries to import...

       Dim tcpClient As New System.Net.Sockets.TcpClient()

       Dim myIP As System.Net.IPAddress = System.Net.IPAddress.Parse("192.168.0.254")
       Try
           'You can change the Port 80 to whatever port you wish to hit (i.e.8080)
           tcpClient.Connect(myIP, 80)
           MessageBox.Show("Ping is OK")
       Catch err As Exception
           'Do what you want in here if the ping is unsuccessful
           MessageBox.Show("Ping is not  OK")
       End Try

[Datahighway]

Hi Robby,

 

i am a newbie in VB Dot. is my Solution wrong ?

Or is there a better Soltution ?

 

Regards Datahighway

[aikeith]

Both solutions are right. For the first one I would add:

 

Imports System.Net

Imports System.Net.Sockets

 

Then keep the rest the same (I did and it works!!)

 

Thanks for your help guys!!!

[Robby]

Datahighway, Your solution was correct, you forgot to include the Imports.

 

If you look closely, I copy/pasted your code.

[Datahighway]

Hi Robby,

 

OK, Sorry my Mistake.

[divil]

That's not a ping. You can create a real ICMP ECHO packet and send it with the .NET framework and the Socket class, see the URL below for an application written in C# to do this.

 

ICMP Ping using .NET Framework

[Incubus]

That's not a ping. You can create a real ICMP ECHO packet and send it with the .NET framework and the Socket class, see the URL below for an application written in C# to do this.

 

ICMP Ping using .NET Framework

 

But how do you write a ping command with VB.NET?

[Volte]

VB.NET and C# are almost identical languages; the only thing largely

different about them is the syntax. It will not be hard to port that

code to VB.NET at all.

 

Alternatively, you could create a C# class project in your program's

solution, add that ping class, and then you will be able to use the C# class

from within your VB project.

[Incubus]

Thanks, I forgot for a moment that it's possible with VS.NET to combine different languages in a program.

[lundholm]

Hi..

 

I´m a bit lost i VS... I get a errormessage when using tcpClient.Connect(myIP, 80)

 

It says:

An unhandled exception of type 'System.Security.SecurityException' occurred in mscorlib.dll

 

Additional information: Request for the permission of type System.Net.SocketPermission, System,

Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 failed.

 

What is wrong?

 

Vr Mikael

[michaelangelo]

the c#-translated code worked, but only once, as someone pointed out.

 

so i tried the short connection code above, but that just tells me that the other machine refused the connection.

 

All im tryna do is have a little programm telling me whcih machines on my network are on, and if i have access to the internet through it.

 

It works once with the long code, but not at all on the short one. any ids?

 

 

cheerza

 

 

emile