Convert an Array to a String or StreamReader??

Try this:

            List<string> workstations = new List<string>();
 
            int idx = Array.IndexOf(args, "-f");
            string filename = "";
 
            if (idx != -1)
            {
                filename = args[idx + 1];
 
                if (System.IO.File.Exists(filename))
                {
                    System.IO.FileStream fs = new System.IO.FileStream(filename, System.IO.FileMode.Open, System.IO.FileAccess.Read);
 
                    using (System.IO.StreamReader sr = new System.IO.StreamReader(fs))
                    {
                        string line;
 
                        while ((line = sr.ReadLine()) != null)
                        {
                            workstations.Add(line);
                        }
                    }
                }
            }

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Hi wally_davis;

The code sample below shows a way of doing what you want.

Fernando

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
 
namespace ConsoleApplication4
{
    class Program
    {
 
        private static List<string> workstations = new List<string>();
 
        static void Main(string[] args)
        {
            //Check to see if the command line parameter length = 2, one for -f the other the filename
            if (args.Length == 2)
            {
                // Check to see if the parameter is -f
                if (args[0] != "-f")
                {
                    // It was not -f, display message and exit.
                    Console.WriteLine("Input option error, no such option as " + args[0] + " \nHit any key to continue.");
                    Console.ReadLine();
                }
                else
                {
                    // It was -f and now check to see if the file exist
                    if( File.Exists(args[1]) )
                    {
                        // The file was found, fill the workstations list with its values
                        workstations.AddRange(File.ReadAllLines(args[1]));
                    }
                }
            }
            else
            {
                // Invalid number of command line parameters were found
                if (args.Length == 0)
                {
                    Console.WriteLine("Workstation file was NOT provided as an input parameter.");
                }
                else
                {
                    Console.WriteLine("Too many input parameter were provided.");
                }
                Console.Write("Hit any key to cotinue");
                Console.ReadLine();
                return;
            }
 
            // Display Workstation list
            foreach (string ws in workstations)
            {
                Console.WriteLine(ws);
            }
 
            // Keep the application open while I read the screen
            Console.ReadLine();
        }
    }
}

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Wally,
I notice you have a "-f" passed as an argument in addition to your filename.  Will you want to identify the filename by argument position?  If not, you can use a switch to identify multiple arguments of different types (i.e. ProofOfConcept /f:true /i:c:\data.txt).
I take it you are passing in a list of machine names or IP addresses you wish to act on in some way.  Please confirm these details and I will reply with some code for you.
Thanks,
Mark

Hi Carl/Guys, This is almost a done deal.
See code below. The data that is being collected in the "nodeList.Add(node);" List<> Collection is getting lost. I'm passing in a Text file (c:\data.txt) using the Properties\Debug\Command Line arguments section.
In that file are 3 workstations. Everything in the code you provided Carl is great until it gets to the
"if (nodeList.Count > 0)" statement. <-- Right here, there are no workstations stored in the ListArray after it exits the "While" routine. For whatever reason, the values are getting lost. Thanks again for all your help.

if (idx != 1)
            {
                filename = args[idx + 1];
                filename.ToUpper();
 
                if (File.Exists(filename))
                {
                    FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
                    using (StreamReader sr = new StreamReader(fs))
                    {
                        Program node = new Program();
                        while ((node.NodeToPing = sr.ReadLine()) != null)
                        {
                            nodeList.Add(node);
                        }
                    }
                }
 
 
                if (nodeList.Count > 0)
                {
                    System.Threading.ThreadPool.SetMaxThreads(65, 10);
                    System.Threading.ThreadPool.SetMinThreads(65, 10);
 
                    foreach (Program node in nodeList)
                    {
                        System.Threading.ThreadPool.QueueUserWorkItem(new System.Threading.WaitCallback(PingWorkstations), node.NodeToPing);
                    }
                }
            }

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Sorry, left the List<> Collections out but its in the code.

List<Program> nodeList = new List<Program>();
List<string> workstations = new List<string>();

Where are you declaring nodeList?

Have you stepped through the code using the debugger to see if it is actually reading anything from the file and adding nodes to the list?

yes, I stepped through the code and its storing them there but once out of that WHILE Loop it appears to drop all of the element values.

Carl, that made perfect sense and moving the instation called to Program did the trick. The code now works except that the multithreading piece is not working but that's another problem in and of itself.