是否有.NET方法來存儲像我的自定義類的時間段？

Question

是否有一個處理這種時間跨度的本機.NET類？我一直無法找到一個。

是否有一個接近？

Public Class Period 

    Property FromDate As Date 
    Property ToDate As Date 

    Public Sub New(ByVal fromDate As Date, ByVal toDate As Date) 

     If fromDate > toDate Then 
      Throw New ArgumentException("fromDate must be less than Or equal toDate") 
     End If 

     _FromDate = fromDate 
     _ToDate = toDate 

    End Sub 

    Public Overloads Shared Operator =(ByVal period1 As Period, 
             ByVal period2 As Period) As Boolean 

     Return period1.FromDate = period2.FromDate AndAlso 
       period1.ToDate = period2.ToDate 

    End Operator 

    Public Overloads Shared Operator <>(ByVal period1 As Period, 
             ByVal period2 As Period) As Boolean 

     Return Not period1 = period2 

    End Operator 

    Public Overloads Shared Operator <(ByVal period1 As Period, 
             ByVal period2 As Period) As Boolean 

     Return period1.FromDate < period2.FromDate 

    End Operator 

    Public Overloads Shared Operator >(ByVal period1 As Period, 
            ByVal period2 As Period) As Boolean 

     Return period1.FromDate > period2.FromDate 

    End Operator 

    Public Overloads Shared Operator >=(ByVal period1 As Period, 
           ByVal period2 As Period) As Boolean 

     Return period1.FromDate >= period2.FromDate 

    End Operator 

    Public Overloads Shared Operator <=(ByVal period1 As Period, 
             ByVal period2 As Period) As Boolean 

     Return period1.FromDate <= period2.FromDate 

    End Operator 

    Public Function Contains(ByVal checkDate As Date) As Boolean 

     Return checkDate >= Me.FromDate AndAlso 
       checkDate < Me.ToDate 

    End Function 

    Public Overrides Function ToString() As String 
     Return Format(_FromDate, "MMM-yyyy") & "-" & Format(_ToDate, "MMM-yyyy")    
    End Function 

End Class 

和派生月期間：

Public Class MonthPeriod : Inherits Period 

    Private _MonthStartDate As Date 

    Public Sub New(ByVal dateInMonth As Date) 

     'Everything >= the 1st of the month to < the 1st of the next month 
     MyBase.New(New Date(dateInMonth.Year, dateInMonth.Month, 1), 
        New Date(dateInMonth.Year, dateInMonth.Month, 1).AddMonths(1)) 

     _MonthStartDate = New Date(dateInMonth.Year, dateInMonth.Month, 1) 

    End Sub 

    Public Overrides Function ToString() As String 
     Return Format(_MonthStartDate, "MMM-yyyy") 
    End Function 

End Class 

Answer 1

簡短回答：我不認爲有任何內置類與此接近。可能最接近的是TimeSpan，但這只是一個沒有絕對開始或結束日期概念的相對跨度。

Answer 2

我沒看過所有的代碼。您的實現可能提供更多功能，但.Net Framework實現稱爲TimeSpan。

它在System命名空間中。

http://msdn.microsoft.com/en-us/library/system.timespan(v=VS.90).aspx

時間跨度限制爲天作爲最大的單位。即在數月或數年內沒有測量。如果需要，它可以延長。

Answer 3

使用.NET標準TimeSpan。如有必要，創建一個繼承TimeSpan的新類，但根據需要添加新方法。