Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17


Want to ping and telnet from an datagrid on the client side

Posted on 2004-04-08
Medium Priority
Last Modified: 2012-08-14
Hello, i have a grid that contains multiple columns, one of which contains an ip address (for switches...).

I'd like to have one button that opens a window and pings the ip address and another that telnets to it.  I realize that this needs to happen on the client side and wonder if I need to use javascript or something along those lines?

I'm open to workarounds...  Would it be better to ping it from the server side and put the output into an html page and direct the user to it or something?  I have no idea what kind of workaround there might be for telnetting.

Any help would be very greatly appreciated!
Question by:MrDeveloper
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 28

Expert Comment

ID: 10786732
I don't think that you can run exe on the client side due to the security settings. Maybe you can install an ActiveX on the client computer

Author Comment

ID: 10786756
I thought of a workaround for telnet:


I can just do a response.redirect("telnet://" & Ipaddress) or something along those lines.  Ping doesn't seem to work from the browser though... I guess a hack would be to create a shell command like:

ping > PingResults.txt

and try to response.redirect to that file on the server.  Definitely a hack, but I'm going to try that

Author Comment

ID: 10786883
Well, the ping seems to work pretty consistently (writing ping results to a text file, redirecting to it), but the telnet://IpAddress doesn't work - gives me a standard "The page cannot be displayed" and never redirects anywhere.  Any thoughts or other ideas to get that working?  I'm definitely still open to a better way to do the pinging too

Learn Veeam advantages over legacy backup

Every day, more and more legacy backup customers switch to Veeam. Technologies designed for the client-server era cannot restore any IT service running in the hybrid cloud within seconds. Learn top Veeam advantages over legacy backup and get Veeam for the price of your renewal

LVL 22

Accepted Solution

_TAD_ earned 1500 total points
ID: 10786963

I'll tell you that doing both of those things are not possible through .Net (pinging from a client and opening a telnet session).

I can ping from the server, and then redirect the output to a variable.  That variable you can send to the web page and display the data.

Telnet is a whole different critter.  It is not possible to do telnet from .Net (server or client).  You'd have to create your own telnet app and use RAW socket connections to get the equivelant effect.
LVL 22

Expert Comment

ID: 10786992

Here's a link on how to do telnet from .Net (it's not easy)

LVL 22

Expert Comment

ID: 10787016

here's how you can ping from the server (using code-behind), store the results to a variable and then do something with the string

               Process myCmd = null;
               ProcessStartInfo qOptions = new ProcessStartInfo(@"cmd.exe", @"/K ping");
               qOptions.RedirectStandardOutput = true;  // set to "true" to enable logging
               qOptions.UseShellExecute = false;  // set to false to enable logging
               myCmd = Process.Start(qOptions);

               StreamReader str = myCmd.StandardOutput;

Author Comment

ID: 10791046
Hey Tad,

First of all, thanks very much for the ping code.  I used:

            Path = "c:\inetpub\wwwroot\PingResults.txt"  'on the server

            'capture the ip address in the row that is selected
            IpAddress = grd.SelectedItem.Cells(3).Text

            'write to a file
            PingCommand = "ping " & IpAddress & " > " & Path
            Shell(PingCommand, AppWinStyle.Hide)


But i like yours much better...  So, using telnet://[ip address] will not work from a browser?  Man, you are not kidding - that class provided in the other article is complex!  I can't even tell if it's designed to allow an client browser to telnet to an ip or not.  

Thank you, i'm going to look for some kind of workaround for telnet...

Author Comment

ID: 10791328
I still can't understand why I can type telnet://ip into my browser address line and it will telnet to that, but if I do response.redirect("telnet://ip"), I get a page not found kind of thing.  

Author Comment

ID: 10792758
Hmm... found a way to make telnet work - <a href="telnet://">Telnet</a  

Works great...  Anybody know how to make a similar one for pinging?

Author Comment

ID: 10793208
Hey TAD, I get "StandardOut has not been redirected. " when I use your ping process code

Author Comment

ID: 10793498
Boy, what a hack this is, but it works...  I wrote a quick sp to return the data, then called it from my .net web form and pumped the output into a grid.  Both are posted below in case somebody else needs a way to do this and finds this question.  

Please give me some more detail on your ping solution TAD.  Your way is unquestionably better, but this hack will allow me to meet the deadline and I can update them later with a better fix.


    Private Sub PopulateGrid()
        Dim cmd As SqlCommand, dr As SqlDataReader

        cmd = New SqlCommand("GetPingResults", Session("cn"))

        cmd.CommandType = CommandType.StoredProcedure

        cmd.Parameters.Add("@Ip", Session("Ip"))

        dr = cmd.ExecuteReader

        With grd
            .DataSource = dr
        End With


    End Sub

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[GetPingResults]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[GetPingResults]


CREATE PROCEDURE GetPingResults @Ip varchar(30)

      DECLARE @strCmd VARCHAR(60)
      SELECT @strCmd = 'ping ' + @Ip
      EXEC Master..xp_cmdShell @strCmd



Author Comment

ID: 10805720
I'm going to stick with my hack here, but TAD_, you comments were helpful and kind of what I ended up doing.  Thanks!

Expert Comment

ID: 11020735
If it's a telnet component you're looking for, you could try:

I dunno if they have any other components, but the telnet one they have is okay and seems to be free and not expire (always a bonus).

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A long time ago (May 2011), I have written an article showing you how to create a DLL using Visual Studio 2005 to be hosted in SQL Server 2005. That was valid at that time and it is still valid if you are still using these versions. You can still re…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…
This tutorial will teach you the special effect of super speed similar to the fictional character Wally West aka "The Flash" After Shake : All lightning effects with instructions : http://www.mediaf…

704 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question