C#

using System;
using System.IO;
using Microsoft.Win32;
 
class Test
{
  static void Main()
  {
    using (RegistryKey rk = Registry.LocalMachine.OpenSubKey(
      @"Software\Microsoft\.NETFramework\AssemblyFolders"))
    {
      foreach (string key in rk.GetSubKeyNames())
      {
        using (RegistryKey af = rk.OpenSubKey(key))
        {
          string dir = (string)af.GetValue(null);
          if (Directory.Exists(dir))
          {
            Console.WriteLine("Enumerating \"{0}\"...", dir);
            foreach (string file in Directory.GetFiles(dir, "*.dll"))
            {
              Console.WriteLine(file);
            }
            Console.WriteLine();
          }
        }
      }
    }
  }
}

<br />
this.textBox1.Text = "It is " + DateTime.Today.DayOfWeek.ToString() + "!";<br />

DateTime start = DateTime.Now;
try
{
  connection.Open();
  command.ExecuteNonQuery(); // or whatever is appropriate
}
finally
{
  connection.Close();
  TimeSpan span = DateTime.Now - start; // span holds the time it took to exec.
}