# Rect.Equality(Rect, Rect) Betreiber

## Definition

Vergleicht zwei Rechtecke auf genaue Übereinstimmung.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``

#### Parameter

rect1
Rect

Das erste der zu vergleichenden Rechtecke.The first rectangle to compare.

rect2
Rect

Das zweite der zu vergleichenden Rechtecke.The second rectangle to compare.

#### Gibt zurück

Boolean

`true`, wenn die Rechtecke über den gleichen Location-Wert und Size-Wert verfügen, andernfalls `false`.`true` if the rectangles have the same Location and Size values; otherwise, `false`.

## Beispiele

Im folgenden Beispiel wird gezeigt, wie der Equality-Operator verwendet wird, um zu bestimmen, ob zwei Rechtecke genau gleich sind.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
``````

## Hinweise

Dieser Vorgang testet auf Objekt Gleichheit.This operation tests for object equality.

In diesem Vergleich werden zwei Instanzen von Double.NaN als gleich betrachtet.In this comparison, two instances of Double.NaN are considered equal.

Hinweis

Die Position und die Dimensionen eines Rechtecks werden durch Double Werte beschrieben.A rectangle's position and dimensions are described by Double values. Da Double Werte bei der Ausführung die Genauigkeit verlieren können, kann es vorkommen, dass ein Vergleich zwischen zwei Werten, die logisch gleich sind, fehlschlägt.Because Double values can lose precision when operated upon, a comparison between two values that are logically equal might fail.

Die entsprechende Methode für diesen Operator ist Rect.Equals(Rect, Rect)The equivalent method for this operator is Rect.Equals(Rect, Rect)