# Guid.Empty Feld

## Definition

Eine schreibgeschützte Instanz der Guid-Struktur, in der alle Werte 0 (null) sind.A read-only instance of the Guid structure whose value is all zeros.

``public: static initonly Guid Empty;``
``public static readonly Guid Empty;``
`` staticval mutable Empty : Guid``
``Public Shared ReadOnly Empty As Guid ``

## Hinweise

Sie können eine GUID mit dem Wert des Guid.Empty Felds vergleichen, um zu bestimmen, ob eine GUID ungleich 0 (null) ist.You can compare a GUID with the value of the Guid.Empty field to determine whether a GUID is non-zero. Im folgenden Beispiel wird der Equality-Operator verwendet, um zwei GUID-Werte mit Guid.Empty zu vergleichen, um zu bestimmen, ob Sie ausschließlich aus Nullen bestehen.The following example uses the Equality operator to compare two GUID values with Guid.Empty to determine whether they consist exclusively of zeros.

``````  // Create a GUID and determine whether it consists of all zeros.
Guid guid1 = Guid.NewGuid();
Console.WriteLine(guid1);
Console.WriteLine(\$"Empty: {guid1 == Guid.Empty}\n");

// Create a GUID with all zeros and compare it to Empty.
var bytes = new Byte[16];
var guid2 = new Guid(bytes);
Console.WriteLine(guid2);
Console.WriteLine(\$"Empty: {guid2 == Guid.Empty}");

// The example displays output like the following:
//       11c43ee8-b9d3-4e51-b73f-bd9dda66e29c
//       Empty: False
//
//       00000000-0000-0000-0000-000000000000
//       Empty: True
``````
``````Module Example
Public Sub Main()
' Create a GUID and determine whether it consists of all zeros.
Dim guid1 As Guid = Guid.NewGuid
Console.WriteLine(guid1)
Console.WriteLine("Empty: {0}", guid1 = Guid.Empty)
Console.WriteLine()

' Create a GUID with all zeros and compare it to Empty.
Dim bytes(15) As Byte
Dim guid2 As New Guid(bytes)
Console.WriteLine(guid2)
Console.WriteLine("Empty: {0}", guid2 = Guid.Empty)
End Sub
End Module
' The example displays output like the following:
'       11c43ee8-b9d3-4e51-b73f-bd9dda66e29c
'       Empty: False
'
'       00000000-0000-0000-0000-000000000000
'       Empty: True
``````