/// <summary>
/// Gets the appointment end date.
/// </summary>
/// <param name="dateStart">The appointment start date.</param>
/// <param name="dateFormat">The date format to be used.</param>
/// <returns>Returns the end date as DateTime.</returns>
private DateTime GetAppointmentDateEnd(DateTime dateStart, string dateFormat)
{
DateTime?dateEnd;
do
{
Console.Write($"Geben Sie das Enddatum im Format \"{dateFormat}\" ein um fortzufahren: ");
dateEnd = AppointmentViewGeneral.GetUserInputDateTime(dateFormat);
if (dateEnd == null)
{
AppointmentViewGeneral.PrintInvalidInput();
}
else
{
DateTime dateMaxLength = dateStart.AddYears(1);
if (dateEnd > dateMaxLength)
{
Console.WriteLine("\nDer Termin darf nicht länger als ein Jahr andauern.");
dateEnd = null;
}
else if (dateEnd < dateStart)
{
Console.WriteLine("\nDas Enddatum darf nicht in der Vergangenheit liegen.");
dateEnd = null;
}
}
}while (dateEnd == null);
return(dateEnd.Value);
}
/// <summary>
/// Deletes the appointment(s) by date.
/// </summary>
internal void DeleteAppointmentByDate()
{
Console.Write($"\nGeben Sie das Startdatum im Format \"dd.MM.yyyy\" ein um fortzufahren: ");
DateTime?date = AppointmentViewGeneral.GetUserInputDateTime("dd.MM.yyyy");
if (date != null)
{
RemoveAppointmentByDate(date.Value);
}
else
{
AppointmentViewGeneral.PrintInvalidInput();
}
}
/// <summary>
/// Gets the appointment start date.
/// </summary>
/// <param name="dateFormat">The date format to be used.</param>
/// <returns>Returns the start date as DateTime.</returns>
private DateTime GetAppointmentDateStart(string dateFormat)
{
DateTime?date;
do
{
Console.Write($"\nGeben Sie das Startdatum im Format \"{dateFormat}\" ein um fortzufahren: ");
date = AppointmentViewGeneral.GetUserInputDateTime(dateFormat);
if (date == null)
{
AppointmentViewGeneral.PrintInvalidInput();
}
}while (date == null);
return(date.Value);
}