/// <summary>
/// Determines whether [is between maintenance time] [the specified dayofweek].
/// N.B. really should not be here...JJG
/// </summary>
/// <param name="dayofweek">The dayofweek.</param>
/// <param name="starttime">The starttime.</param>
/// <param name="endtime">The endtime.</param>
/// <returns></returns>
public static bool IsBetweenMaintenanceTime(string dayofweek, string starttime, string endtime)
{
// Get the current server time since the zone conversion logic, first converts it to UTC and then to desired time zone.
var currentUtcDateTime = DateTime.UtcNow.ToUniversalTime();
DateTime?rentalBranchTimeZone = currentUtcDateTime.ToLocalTime();
//Central
rentalBranchTimeZone = TimeZoneInformation.ConvertDateTimeToTimeZone("u", rentalBranchTimeZone.ToString(), "Central Standard Time");
ErrorLog.DebugLog("IsBetweenMaintenanceTime RentalBranchTime: " + rentalBranchTimeZone + "starttime: " + starttime + " end times: " + endtime, "test");
// Current day of the week:
//DayOfWeek day = RentalBranchTimeZone.Value.DayOfWeek;
if (rentalBranchTimeZone != null && rentalBranchTimeZone.Value.DayOfWeek.Equals((DayOfWeek)Enum.Parse(typeof(DayOfWeek), dayofweek)))
{
TimeSpan startinterval;
TimeSpan endinterval;
if ((TimeSpan.TryParse(starttime, out startinterval)) && TimeSpan.TryParse(endtime, out endinterval))
{
if (endinterval == startinterval)
{
return(true);
}
if (endinterval < startinterval)
{
return(rentalBranchTimeZone.Value.TimeOfDay <= endinterval && rentalBranchTimeZone.Value.TimeOfDay >= startinterval);
}
return(rentalBranchTimeZone.Value.TimeOfDay >= startinterval && rentalBranchTimeZone.Value.TimeOfDay <= endinterval);
}
}
return(false);
}
/// <summary>
/// Converts the date time string to time zone.
/// </summary>
/// <param name="outputFormat">The output format for the result.</param>
/// <param name="source">The source date time value as string (will be Parsed).</param>
/// <param name="timeZoneId">The TimeZone standard name.</param>
/// <returns></returns>
static public DateTime?ConvertDateTimeToTimeZone(string outputFormat, string source, string timeZoneId)
{
try
{
DateTime current = DateTime.Parse(source);
TimeZoneInformation zone = FromName(timeZoneId);
Assert.Test(zone != null, string.Format("TimeZoneInformation for {0} not found!", timeZoneId));
DateTime utc = current.ToUniversalTime();
DateTime dest = zone.FromUniversalTime(utc);
return(dest);
}
catch (Exception ex)
{
ErrorLog.LogError(string.Format("ConvertDateTimeToTimeZone({0},{1}) failed: {2}", source, timeZoneId, ex.Message), "FnsUtility.TimeZoneInformation");
}
return(null);
}
/// <summary>
/// Enumerate the available time zones
/// </summary>
/// <returns>The list of known time zones</returns>
public static TimeZoneInformation[] EnumZones()
{
if (s_zones == null)
{
lock (s_lockZones)
{
if (s_zones == null)
{
ArrayList zones = new ArrayList();
using (RegistryKey key =
Registry.LocalMachine.OpenSubKey(
@"SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones"))
{
string[] zoneNames = key.GetSubKeyNames();
foreach (string zoneName in zoneNames)
{
using (RegistryKey subKey = key.OpenSubKey(zoneName))
{
TimeZoneInformation tzi = new TimeZoneInformation();
tzi.m_name = zoneName;
tzi.m_displayName = (string)subKey.GetValue("Display");
tzi.m_standardName = (string)subKey.GetValue("Std");
tzi.m_daylightName = (string)subKey.GetValue("Dlt");
tzi.m_index = (int)(subKey.GetValue("Index"));
tzi.InitTzi((byte[])subKey.GetValue("Tzi"));
zones.Add(tzi);
}
}
}
s_zones = new TimeZoneInformation[zones.Count];
zones.CopyTo(s_zones);
}
}
}
return(s_zones);
}
/// <summary>
/// Convert a time from the time zone with the supplied index to UTC.
/// </summary>
/// <param name="index">The time zone index.</param>
/// <param name="local">The local.</param>
/// <returns>The converted time.</returns>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the index is not found.</exception>
/// <exception cref="NotSupportedException">Thrown if the method failed due to missing platform support.</exception>
public static DateTime ToUniversalTime(int index, DateTime local)
{
TimeZoneInformation tzi = FromIndex(index);
return(tzi.ToUniversalTime(local));
}
/// <summary>
/// Convert a time from UTC to the time zone with the supplied index.
/// </summary>
/// <param name="index">The time zone index.</param>
/// <param name="utc">The time to convert.</param>
/// <returns>The converted time.</returns>
/// <exception cref="ArgumentOutOfRangeException">Thrown if the index is not found.</exception>
public static DateTime FromUniversalTime(int index, DateTime utc)
{
TimeZoneInformation tzi = FromIndex(index);
return(tzi.FromUniversalTime(utc));
}