C#

<code>
using System.Diagnostics;

public void RunPing()
{
   Process p = new Process();
   p.StartInfo.Arguments = "www.codeproject.com";
   p.StartInfo.FileName = "ping.exe";
   p.StartInfo.WindowStyle = ProcessWindowStyle.Normal;
   p.Start();
   p.WaitForExit(5000); // Use this to pause the code until the application closes (this one times out and continues anyway after 5 seconds)
}
</code>

<code>
public void WriteFile(string text, string fileName)
{
    System.IO.TextWriter tw = null;
    try
    {
       if(System.IO.File.Exists(fileName))
       {
	  System.IO.File.Delete(fileName); //Do this if you want to "overwrite" the file
       }
       tw = System.IO.File.CreateText(fileName);
       tw.WriteLine(text);
    }
    finally
    {
       if(tw != null)
       {
           tw.Flush();
	   tw.Close();  // Put these in the finally clause to make sure that the file closes
       }
    }
}
</code>