C#

public class IsoCurrencyInfo
{
    private static Hashtable _iciRegistry = new Hashtable();

    public static IsoCurrencyInfo GetInstance(string isoCode)
    {
        if (!_iciRegistry.Contains(isoCode))
        {
            lock (syncRoot)
            {
                if (!_iciRegistry.Contains(isoCode))
                {
                    _iciRegistry.Add(isoCode, new IsoCurrencyInfo(isoCode));
                }
            }
        }
        return (IsoCurrencyInfo)_iciRegistry[isoCode];
    }
}

ManagementScope scope = new ManagementScope(
  string.Format(@"\\{0}\ROOT\CIMV2", name));
Sample.ROOT.CIMV2.OperatingSystem.OperatingSystemCollection systems = 
  Sample.ROOT.CIMV2.OperatingSystem.GetInstances(scope, null, null);
foreach (Sample.ROOT.CIMV2.OperatingSystem system in systems)
  system.Reboot();

TimeSpan span = monthCal.SelectionEnd - monthCal.SelectionStart;
int count = span.Days + 1; // Subtraction of days requires that you add 1.
DateTime[] dts = new DateTime[count];
for (int i=0; i<count; i++)
  dts[i] = monthCal.SelectionStart + new TimeSpan(1, 0, 0, 0);