DateTime.MaxValue 欄位

public: static initonly DateTime MaxValue;

public static readonly DateTime MaxValue;

 staticval mutable MaxValue : DateTime

Public Shared ReadOnly MaxValue As DateTime 

下列範例會藉由傳遞其建構 Int64 函式代表一些刻度的值，來具現 DateTime 化 物件。 叫用建構函式之前，此範例會確保此值大於或等於 DateTime.MinValue.Ticks ，且小於或等於 DateTime.MaxValue.Ticks 。 如果沒有，則會擲回 ArgumentOutOfRangeException 。

// Attempt to assign an out-of-range value to a DateTime constructor.
long numberOfTicks = Int64.MaxValue;
DateTime validDate;

// Validate the value.
if (numberOfTicks >= DateTime.MinValue.Ticks &&
    numberOfTicks <= DateTime.MaxValue.Ticks)
   validDate = new DateTime(numberOfTicks);
else if (numberOfTicks < DateTime.MinValue.Ticks)
   Console.WriteLine("{0:N0} is less than {1:N0} ticks.",
                     numberOfTicks,
                     DateTime.MinValue.Ticks);
else
   Console.WriteLine("{0:N0} is greater than {1:N0} ticks.",
                     numberOfTicks,
                     DateTime.MaxValue.Ticks);
// The example displays the following output:
//   9,223,372,036,854,775,807 is greater than 3,155,378,975,999,999,999 ticks.

// Attempt to assign an out-of-range value to a DateTime constructor.
let numberOfTicks = Int64.MaxValue

// Validate the value.
if numberOfTicks >= DateTime.MinValue.Ticks &&
   numberOfTicks <= DateTime.MaxValue.Ticks then
    let validDate = DateTime numberOfTicks
    ()
elif numberOfTicks < DateTime.MinValue.Ticks then
    printfn $"{numberOfTicks:N0} is less than {DateTime.MinValue.Ticks:N0} ticks."
else
    printfn $"{numberOfTicks:N0} is greater than {DateTime.MaxValue.Ticks:N0} ticks."
// The example displays the following output:
//   9,223,372,036,854,775,807 is greater than 3,155,378,975,999,999,999 ticks.

' Attempt to assign an out-of-range value to a DateTime constructor.
Dim numberOfTicks As Long = Int64.MaxValue
Dim validDate As Date

' Validate the value.
If numberOfTicks >= Date.MinValue.Ticks And _
   numberOfTicks <= Date.MaxValue.Ticks Then
   validDate = New Date(numberOfTicks)
ElseIf numberOfTicks < Date.MinValue.Ticks Then
   Console.WriteLine("{0:N0} is less than {1:N0} ticks.", 
                     numberOfTicks, 
                     DateTime.MinValue.Ticks)      
Else                                                   
   Console.WriteLine("{0:N0} is greater than {1:N0} ticks.", 
                     numberOfTicks, 
                     DateTime.MaxValue.Ticks)     
End If
' The example displays the following output:
'   9,223,372,036,854,775,807 is greater than 3,155,378,975,999,999,999 ticks.

這個常數的值相當於西曆 99999 年 12 月 31 日 9999 年 12 月 31 日 23：59：59：59：00 UTC 之前的 100 奈秒刻度，剛好是 00：00：00 UTC，10000 年 1 月 1 日。

某些行事曆，例如 ThaiBuddhistCalendar ，支援早于 MaxValue 的上限日期範圍。 在這些情況下，嘗試存取 MaxValue 變數指派或格式化和剖析作業可能會擲回 ArgumentOutOfRangeException 。 您可以擷取 DateTime.MaxValue 指定文化特性的最新有效日期值的值，而不是擷 Calendar.MaxSupportedDateTime 取 的值。

• MinValue