Rect.Equality(Rect, Rect) Rect.Equality(Rect, Rect) Rect.Equality(Rect, Rect) Rect.Equality(Rect, Rect) Operator

Definizione

Confronta due rettangoli per verificarne l’esatta uguaglianza.Compares two rectangles for exact equality.

public:
 static bool operator ==(System::Windows::Rect rect1, System::Windows::Rect rect2);
public static bool operator == (System.Windows.Rect rect1, System.Windows.Rect rect2);
static member ( = ) : System.Windows.Rect * System.Windows.Rect -> bool
Public Shared Operator == (rect1 As Rect, rect2 As Rect) As Boolean

Parametri

rect1
Rect Rect Rect Rect

Primo rettangolo da confrontare.The first rectangle to compare.

rect2
Rect Rect Rect Rect

Secondo rettangolo da confrontare.The second rectangle to compare.

Restituisce

true se i rettangoli hanno gli stessi valori Location e Size; in caso contrario, false.true if the rectangles have the same Location and Size values; otherwise, false.

Esempi

Nell'esempio seguente viene illustrato come utilizzare il Equality operatore per determinare se due rettangoli sono esattamente uguali.The following example shows how to use the Equality operator to determine if two rectangles are exactly equal.

private Boolean overloadedEqualityOperatorExample()
{
    // Initialize new rectangle.
    Rect myRectangle = new Rect();

    // The Location property specifies the coordinates of the upper left-hand 
    // corner of the rectangle. 
    myRectangle.Location = new Point(10, 5);

    // Set the Size property of the rectangle with a width of 200
    // and a height of 50.
    myRectangle.Size = new Size(200, 50);

    // Create second rectangle to compare to the first.
    Rect myRectangle2 = new Rect();
    myRectangle2.Location = new Point(0, 0);
    myRectangle2.Size = new Size(200, 50);

    // Check if the two Rects are exactly equal using the overloaded equality operator.
    // areEqual is false because although the size of each rectangle is the same,
    // the locations are different.
    bool areEqual = (myRectangle == myRectangle2);

    // Returns false.
    return areEqual;

}
Private Function overloadedEqualityOperatorExample() As Boolean
	' Initialize new rectangle.
	Dim myRectangle As New Rect()

	' The Location property specifies the coordinates of the upper left-hand 
	' corner of the rectangle. 
	myRectangle.Location = New Point(10, 5)

	' Set the Size property of the rectangle with a width of 200
	' and a height of 50.
	myRectangle.Size = New Size(200, 50)

	' Create second rectangle to compare to the first.
	Dim myRectangle2 As New Rect()
	myRectangle2.Location = New Point(0, 0)
	myRectangle2.Size = New Size(200, 50)

	' Check if the two Rects are exactly equal using the overloaded equality operator.
	' areEqual is false because although the size of each rectangle is the same,
	' the locations are different.
	Dim areEqual As Boolean = (myRectangle = myRectangle2)

	' Returns false.
	Return areEqual

End Function

Commenti

Questa operazione verifica l'uguaglianza di oggetti.This operation tests for object equality.

In questo confronto, due istanze di Double.NaN sono considerati uguali.In this comparison, two instances of Double.NaN are considered equal.

Nota

Posizione e dimensioni di un rettangolo sono descritti dai Double valori.A rectangle's position and dimensions are described by Double values. Poiché Double valori possano perdita di precisione quando si opera, potrebbe avere esito negativo di un confronto tra due valori che sono uguali.Because Double values can lose precision when operated upon, a comparison between two values that are logically equal might fail.

È il metodo equivalente per l'operatore Rect.Equals(Rect, Rect)The equivalent method for this operator is Rect.Equals(Rect, Rect)

Si applica a