DateTimeOffset.Subtraction 運算子

定義

命名空間:

System

組件:

System.Runtime.dll

從 DateTimeOffset 物件減去指定的 TimeSpan 或 DateTimeOffset 物件。

多載

Subtraction(DateTimeOffset, DateTimeOffset)	從其他 DateTimeOffset 物件減去一個物件並產生時間間隔。
Subtraction(DateTimeOffset, TimeSpan)	從指定的日期和時間減去指定的時間間隔，並產生新的日期和時間。

Subtraction(DateTimeOffset, DateTimeOffset)

來源:

DateTimeOffset.cs

從其他 DateTimeOffset 物件減去一個物件並產生時間間隔。

public:
 static TimeSpan operator -(DateTimeOffset left, DateTimeOffset right);

public static TimeSpan operator - (DateTimeOffset left, DateTimeOffset right);

static member ( - ) : DateTimeOffset * DateTimeOffset -> TimeSpan

Public Shared Operator - (left As DateTimeOffset, right As DateTimeOffset) As TimeSpan

參數

left

DateTimeOffset

被減數。

right

DateTimeOffset

減數。

傳回

TimeSpan

物件，代表 left 和 right 之間的差。

備註

方法 Subtraction 會定義 物件的 DateTimeOffset 減法運算。 它會啟用下列程式碼：

DateTimeOffset firstDate = new DateTimeOffset(2008, 3, 25, 18, 0, 0,
                                              new TimeSpan(-7, 0, 0));
DateTimeOffset secondDate = new DateTimeOffset(2008, 3, 25, 18, 0, 0,
                                               new TimeSpan(-5, 0, 0));
DateTimeOffset thirdDate = new DateTimeOffset(2008, 2, 28, 9, 0, 0,
                                              new TimeSpan(-7, 0, 0));
TimeSpan difference;

difference = firstDate - secondDate;
Console.WriteLine("({0}) - ({1}): {2} days, {3}:{4:d2}",
                  firstDate.ToString(),
                  secondDate.ToString(),
                  difference.Days,
                  difference.Hours,
                  difference.Minutes);

difference = firstDate - thirdDate;
Console.WriteLine("({0}) - ({1}): {2} days, {3}:{4:d2}",
                  firstDate.ToString(),
                  secondDate.ToString(),
                  difference.Days,
                  difference.Hours,
                  difference.Minutes);
// The example produces the following output:
//    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 0 days, 2:00
//    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 26 days, 9:00

let firstDate =
    DateTimeOffset(2008, 3, 25, 18, 0, 0, TimeSpan(-7, 0, 0))

let secondDate =
    DateTimeOffset(2008, 3, 25, 18, 0, 0, TimeSpan(-5, 0, 0))

let thirdDate =
    DateTimeOffset(2008, 2, 28, 9, 0, 0, TimeSpan(-7, 0, 0))

let difference = firstDate - secondDate
printfn $"({firstDate}) - ({secondDate}): {difference.Days} days, {difference.Hours}:{difference.Minutes:d2}"

let difference = firstDate - thirdDate
printfn $"({firstDate}) - ({secondDate}): {difference.Days} days, {difference.Hours}:{difference.Minutes:d2}"
// The example produces the following output:
//    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 0 days, 2:00
//    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 26 days, 9:00

Dim firstDate As New DateTimeOffset(#3/25/2008 6:00PM#, _
                                    New TimeSpan(-7, 0, 0))
Dim secondDate As New DateTimeOffset(#3/25/2008 6:00PM#, _
                                     New TimeSpan(-5, 0, 0))
Dim thirdDate As New DateTimeOffset(#2/28/2008 9:00AM#, _
                                    New TimeSpan(-7, 0, 0))
Dim difference As TimeSpan

difference = firstDate - secondDate
Console.WriteLine("({0}) - ({1}): {2} days, {3}:{4:d2}", _
                  firstDate.ToString(), _
                  secondDate.ToString(), _
                  difference.Days, _
                  difference.Hours, _
                  difference.Minutes)      
difference = firstDate - thirdDate
Console.WriteLine("({0}) - ({1}): {2} days, {3}:{4:d2}", _
                  firstDate.ToString(), _
                  secondDate.ToString(), _
                  difference.Days, _
                  difference.Hours, _
                  difference.Minutes) 
' The example produces the following output:
'    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 0 days, 2:00
'    (3/25/2008 6:00:00 PM -07:00) - (3/25/2008 6:00:00 PM -05:00): 26 days, 9:00

不支援自訂運算子和運算子多載的語言可以改為呼叫 DateTimeOffset.Subtract(DateTimeOffset) 方法。

這個運算子 DateTimeOffset.Subtract(TimeSpan) 的對等方法是 。

另請參閱

• Subtract(DateTimeOffset)
• 使用日期和時間執行算數運算

Subtraction(DateTimeOffset, TimeSpan)

來源:

DateTimeOffset.cs

從指定的日期和時間減去指定的時間間隔，並產生新的日期和時間。

public:
 static DateTimeOffset operator -(DateTimeOffset dateTimeOffset, TimeSpan timeSpan);

public static DateTimeOffset operator - (DateTimeOffset dateTimeOffset, TimeSpan timeSpan);

static member ( - ) : DateTimeOffset * TimeSpan -> DateTimeOffset

Public Shared Operator - (dateTimeOffset As DateTimeOffset, timeSpan As TimeSpan) As DateTimeOffset

參數

dateTimeOffset

DateTimeOffset

當做被減數的日期和時間物件。

timeSpan

TimeSpan

要減去的時間間隔。

傳回

DateTimeOffset

物件，等於 dateTimeOffset 減去 timeSpan 的值。

例外狀況

ArgumentOutOfRangeException

產生的 DateTimeOffset 值小於 DateTimeOffset.MinValue 或大於 DateTimeOffset.MaxValue。

備註

方法 Subtraction 會定義 物件的 DateTimeOffset 減法運算。 它會啟用下列程式碼：

DateTimeOffset offsetDate = new DateTimeOffset(2007, 12, 3, 11, 30, 0,
                               new TimeSpan(-8, 0, 0));
TimeSpan duration = new TimeSpan(7, 18, 0, 0);
Console.WriteLine(offsetDate - duration);  // Displays 11/25/2007 5:30:00 PM -08:00

let offsetDate =
    DateTimeOffset(2007, 12, 3, 11, 30, 0, TimeSpan(-8, 0, 0))

let duration = TimeSpan(7, 18, 0, 0)
printfn $"{offsetDate - duration}" // Displays 11/25/2007 5:30:00 PM -08:00

Dim offsetDate As New DateTimeOffset(#12/3/2007 11:30AM#, _
                               New TimeSpan(-8, 0, 0)) 
Dim duration As New TimeSpan(7, 18, 0, 0)
Console.WriteLine(offsetDate - duration)    ' Displays 11/25/2007 5:30:00 PM -08:00

不支援自訂運算子和運算子多載的語言可以改為呼叫 DateTimeOffset.Subtract(TimeSpan) 方法。

這個運算子 DateTimeOffset.Subtract(TimeSpan) 的對等方法是 。

另請參閱

• Subtract(TimeSpan)
• 使用日期和時間執行算數運算