/// <summary>
/// Adds an era.
/// </summary>
/// <param name="identifier">The identifier.</param>
/// <param name="name">The name.</param>
/// <param name="begin">The beginning date.</param>
/// <param name="end">The ending date.</param>
/// <exception cref="System.ArgumentException">
/// The beginning date has a different reference system to the eras.
/// or
/// The ending date has a different reference system to the eras.
/// </exception>
public void AddEra(String identifier, String name, Positioning.DateAndTime begin, Positioning.DateAndTime end)
{
if (!Begin.ReferenceSystem.Equals(begin.ReferenceSystem))
{
throw new ArgumentException("The beginning date has a different reference system to the era.", "begin");
}
if (!Begin.ReferenceSystem.Equals(end.ReferenceSystem))
{
throw new ArgumentException("The ending date has a different reference system to the era.", "end");
}
OrdinalEra era = new OrdinalEra(identifier, name, this.ReferenceSystem, begin, end);
era._group = this;
_eras.Add(era);
}
/// <summary>
/// Adds an era.
/// </summary>
/// <param name="identifier">The identifier.</param>
/// <param name="name">The name.</param>
/// <param name="begin">The beginning date.</param>
/// <param name="end">The ending date.</param>
/// <exception cref="System.ArgumentException">
/// The beginning date has a different reference system to the eras.
/// or
/// The ending date has a different reference system to the eras.
/// </exception>
public void AddEra(String identifier, String name, DateAndTime begin, Positioning.DateAndTime end)
{
if (_beginEndReferenceSystem == null)
{
_beginEndReferenceSystem = begin.ReferenceSystem;
}
if (!_beginEndReferenceSystem.Equals(begin.ReferenceSystem))
{
throw new ArgumentException("The beginning date has a different reference system to the eras.", "begin");
}
if (!_beginEndReferenceSystem.Equals(end.ReferenceSystem))
{
throw new ArgumentException("The ending date has a different reference system to the eras.", "end");
}
_eras.Add(new OrdinalEra(identifier, name, this, begin, end));
}
