DateTimeOffset.Inequality(DateTimeOffset, DateTimeOffset) 运算符

定义

确定两个指定的 DateTimeOffset 对象是否表示不同的时间点。Determines whether two specified DateTimeOffset objects refer to different points in time.

public:
 static bool operator !=(DateTimeOffset left, DateTimeOffset right);
public static bool operator != (DateTimeOffset left, DateTimeOffset right);
static member op_Inequality : DateTimeOffset * DateTimeOffset -> bool
Public Shared Operator != (left As DateTimeOffset, right As DateTimeOffset) As Boolean

参数

left
DateTimeOffset

要比较的第一个对象。The first object to compare.

right
DateTimeOffset

要比较的第二个对象。The second object to compare.

返回

如果 trueleft 不具有相同的 right 值,则为 UtcDateTime;否则为 falsetrue if left and right do not have the same UtcDateTime value; otherwise, false.

注解

Inequality 方法定义 DateTimeOffset 对象的不相等运算符的运算。The Inequality method defines the operation of the inequality operator for DateTimeOffset objects. 它始终从 Equality返回相反的结果。It always returns the opposite result from Equality. Inequality 方法启用如下代码:The Inequality method enables code such as the following:

DateTimeOffset date1 = new DateTimeOffset(2007, 6, 3, 14, 45, 0, 
             new TimeSpan(-7, 0, 0));
DateTimeOffset date2 = new DateTimeOffset(2007, 6, 3, 15, 45, 0,
             new TimeSpan(-6, 0, 0));
DateTimeOffset date3 = new DateTimeOffset(date1.DateTime, 
             new TimeSpan(-6, 0, 0));
Console.WriteLine(date1 != date2);        // Displays False
Console.WriteLine(date1 != date3);        // Displays True 
Dim date1 As New DateTimeOffset(#6/3/2007 2:45PM#, _
             New TimeSpan(-7, 0, 0))
Dim date2 As New DateTimeOffset(#6/3/2007 3:45PM#, _
             New TimeSpan(-6, 0, 0))
Dim date3 As New DateTimeOffset(date1.DateTime, _
             New TimeSpan(-6, 0, 0))
Console.WriteLine(date1 <> date2)        ' Displays False
Console.WriteLine(date1 <> date3)        ' Displays True

在计算 leftright 操作数的相等性之前,运算符会将这两个值都转换为协调世界时(UTC)。Before evaluating the left and right operands for equality, the operator converts both values to Coordinated Universal Time (UTC). 操作等效于以下内容:The operation is equivalent to the following:

return first.UtcDateTime == second.UtcDateTime;
Return first.UtcDateTime = second.UtcDateTime

换句话说,Inequality 方法确定两个 DateTimeOffset 对象是否表示不同的时间点。In other words, the Inequality method determines whether the two DateTimeOffset objects represent different points in time. 它直接比较日期和时间以及偏移量。It directly compares neither dates and times nor offsets.

不支持自定义运算符的语言可以改为调用 Compare 方法。Languages that do not support custom operators can call the Compare method instead. 此外,某些语言还可以直接调用 Inequality 方法,如下面的示例所示。In addition, some languages can also call the Inequality method directly, as the following example shows.

Dim date1 As New DateTimeOffset(#6/3/2007 2:45PM#, _
             New TimeSpan(-7, 0, 0))
Dim date2 As New DateTimeOffset(#6/3/2007 3:45PM#, _
             New TimeSpan(-7, 0, 0))
Dim date3 As New DateTimeOffset(date1.DateTime, _
             New TimeSpan(-6, 0, 0))
Dim date4 As DateTimeOffset = date1
Console.WriteLine( _
    DateTimeOffset.op_Inequality(date1, date2))   ' Displays True
Console.WriteLine( _
    DateTimeOffset.op_Inequality(date1, date3))   ' Displays True
Console.WriteLine( _
    DateTimeOffset.op_Inequality(date1, date4))   ' Displays False

此运算符的等效方法是 DateTimeOffset.Compare(DateTimeOffset, DateTimeOffset)The equivalent method for this operator is DateTimeOffset.Compare(DateTimeOffset, DateTimeOffset)

适用于