Listbox troubles in Visual C#

Posted on 2008-10-23
Last Modified: 2013-12-17
I am currently making a ajax enabled 2.0 C# web page using Visual 2005  that pings 13 servers at timed intervals.

I am wondering:
1. If and how i can use the below mentioned variable svr in the below mentioned loop to be passed as the hostname to ping the various servers as it loops though on page load.

2. If and how i can include a image inside a listbox a part of the loop in the below code snippet  

It errors on PingReply reply = pingSender.Send(hostName, timeout, buffer, options); saying no host exists so it must not be being passed.

protected void Page_Load(object sender, EventArgs e)


        string[] servers = File.ReadAllLines(Server.MapPath("TestFile.txt"));

        foreach (string svr in servers)


          ListBox1.Items.Add(svr + " is Online");



And my ping code is

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Question by:Figle
1 Comment

Accepted Solution

keustermans earned 500 total points
ID: 22793815
found this on the net maybe it will help you
using System;

using System.Data;

using System.Configuration;

using System.Web;

using System.Web.Security;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.WebControls.WebParts;

using System.Web.UI.HtmlControls;

using System.Net;

using System.Net.NetworkInformation;

using System.Text;

public partial class _Default : System.Web.UI.Page 


    protected void Page_Load(object sender, EventArgs e)


     // This tutorial is provided in part by Server Intellect Web Hosting Solutions

     // Visit for more ASP.NET Tutorials


 protected void btnSubmit_Click(object sender, EventArgs e)


    try {

    lblStatus.Text = null;

    Ping ping = new Ping();

    PingReply pingreply = ping.Send(txtHost.Text);

    txtPing.Text += "Address: " + pingreply.Address + "\r";

    txtPing.Text += "Roundtrip Time: " + pingreply.RoundtripTime + "\r";

    txtPing.Text += "TTL (Time To Live): " + pingreply.Options.Ttl + "\r";

    txtPing.Text += "Buffer Size: " + pingreply.Buffer.Length.ToString() + "\r";


    catch (Exception err) {

      lblStatus.Text = err.Message;




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