/// <summary>
/// Move the current timezone depending on the direction
/// left : move backward, decrease GMT offset
/// right : move forward, increase GMT offset
/// </summary>
/// <param name="direction">Direction</param>
public static void MoveCurrentTimezone(Direction direction)
{
int current = TimezoneUtility.GetCurrentTimezoneNo();
if (direction == Direction.LEFT)
{
if (current == 0)
{
TimezoneUtility.SetCurrentTimezone(TimezoneUtility.timezone_.Length - 1);
}
else
{
TimezoneUtility.SetCurrentTimezone(current - 1);
}
}
else
{
if (current == TimezoneUtility.timezone_.Length - 1)
{
TimezoneUtility.SetCurrentTimezone(0);
}
else
{
TimezoneUtility.SetCurrentTimezone(current + 1);
}
}
}
/// <summary>
/// Get Timezone information related to the given GMT offset
/// </summary>
/// <param name="offset">int</param>
/// <returns>TimezoneInfo</returns>
private static TimezoneInfo GetTimezoneInformation(int offset)
{
TimezoneInfo info;
int localTimezoneOffset = TimezoneUtility.GetLocalTimeGmtOffset();
int offset_integer = (Math.Abs(offset - localTimezoneOffset)) / 60;
int offset_remainder = (Math.Abs(offset - localTimezoneOffset)) % 60;
DateTime dateNow = DateTime.Now;
if (offset < localTimezoneOffset)
{
if (offset_remainder > 0)
{
info.relative = String.Format("{0}h {1}m behind", offset_integer, offset_remainder);
info.newTime = dateNow.Add(new TimeSpan(-(offset_integer), -(offset_remainder), 0));
}
else
{
info.relative = String.Format("{0}h behind", offset_integer);
info.newTime = dateNow.Add(new TimeSpan(-(offset_integer), 0, 0));
}
}
else if (offset > localTimezoneOffset)
{
if (offset_remainder > 0)
{
info.relative = String.Format("{0}h {1}m ahead", offset_integer, offset_remainder);
info.newTime = dateNow.Add(new TimeSpan(offset_integer, offset_remainder, 0));
}
else
{
info.relative = String.Format("{0}h ahead", offset_integer);
info.newTime = dateNow.Add(new TimeSpan(offset_integer, 0, 0));
}
}
else
{
info.relative = "Same as local time";
info.newTime = dateNow;
}
return(info);
}
