Point.Equality(Point, Point) Point.Equality(Point, Point) Point.Equality(Point, Point) Point.Equality(Point, Point) Operator

定义

比较两个 Point 结构是否相等。Compares two Point structures for equality.

public:
 static bool operator ==(System::Windows::Point point1, System::Windows::Point point2);
public static bool operator == (System.Windows.Point point1, System.Windows.Point point2);
static member ( = ) : System.Windows.Point * System.Windows.Point -> bool
Public Shared Operator == (point1 As Point, point2 As Point) As Boolean

参数

point1
Point Point Point Point

要比较的第一个 Point 结构。The first Point structure to compare.

point2
Point Point Point Point

要比较的第二个 Point 结构。The second Point structure to compare.

返回

如果两个点(即 point1point2)的 XY 坐标都相等,则为 true;否则为 falsetrue if both the X and Y coordinates of point1 and point2 are equal; otherwise, false.

示例

下面的示例演示如何使用重载 (= Point =) 运算符检查两个结构是否相等。The following example shows how to check if two Point structures are equal using the overloaded (==) operator.

private Boolean overloadedEqualityOperatorExample()
{
    Point point1 = new Point(10, 5);
    Point point2 = new Point(15, 40);

    // Check if two Points are equal using the overloaded equality operator.
    // areEqual is False.
    Boolean areEqual = (point1 == point2);

    return areEqual;

}
Private Function overloadedEqualityOperatorExample() As Boolean
    Dim point1 As New Point(10, 5)
    Dim point2 As New Point(15, 40)

    ' Check if two Points are equal using the overloaded equality operator.
    ' areEqual is False.
    Dim areEqual As Boolean = (point1 = point2)

    Return areEqual

End Function

注解

使用Double值描述点的坐标。A point's coordinates are described using Double values. 因为在对它们Double执行算术运算时, 的值可能会丢失精度, 所以, 逻辑Point上相等的两个值之间的比较可能会失败。Because the value of Double can lose precision when arithmetic operations are performed on them, a comparison between two Point values that are logically equal might fail.

适用于

另请参阅