/// <summary>
/// Dates the difference.
/// </summary>
/// <param name="otherDate">
/// The other date.
/// </param>
/// <returns>
/// </returns>
public TimeSpan DateDifference(IDateObjectModel otherDate)
{
if (Valid)
{
return(SingleDate.Subtract(otherDate.SingleDate));
}
return(new TimeSpan());
}
/// <summary>
/// Dates the difference.
/// </summary>
/// <param name="otherDate">
/// The other date.
/// </param>
/// <returns>
/// </returns>
public TimeSpan DateDifference(IDateObjectModel otherDate)
{
Contract.Requires(otherDate != null);
if (Valid)
{
return(SingleDate.Subtract(otherDate.SingleDate).Duration());
}
return(new TimeSpan());
}
/// <summary>
/// Dates the difference decoded.
/// </summary>
/// <param name="otherDate">
/// The other date.
/// </param>
/// <returns>
/// </returns>
public string DateDifferenceDecoded(IDateObjectModel otherDate)
{
if (Valid)
{
// Because we start at year 1 for the Gregorian calendar, we must subtract a year here.
DateTime zeroTime = new DateTime(1, 1, 1);
int years = (zeroTime + DateDifference(otherDate)).Year - 1;
// 1, where my other algorithm resulted in 0.
return(years + " years");
}
return("Unknown");
}
public int CompareTo(IDateObjectModel other)
{
Contract.Requires(other != null);
return(DateTime.Compare(SortDate, other.SortDate));
}
