Type.IsSealed Eigenschaft

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Quelle:

Type.cs

Ruft einen Wert ab, der angibt, ob der Type als versiegelt deklariert ist.

public:
 property bool IsSealed { bool get(); };

public bool IsSealed { get; }

member this.IsSealed : bool

Public ReadOnly Property IsSealed As Boolean

Eigenschaftswert

Boolean

true, wenn Type als versiegelt deklariert ist, andernfalls false.

Beispiele

Im folgenden Beispiel wird eine Instanz einer sealed Klasse erstellt, auf die IsSealed -Eigenschaft überprüft und das Ergebnis angezeigt.

using namespace System;

// Declare MyTestClass as sealed.
ref class TestClass sealed{};

int main()
{
      TestClass^ testClassInstance = gcnew TestClass;
      
      // Get the type of testClassInstance.
      Type^ type = testClassInstance->GetType();
      
      // Get the IsSealed property of the myTestClassInstance.
      bool sealed = type->IsSealed;
      Console::WriteLine("{0} is sealed: {1}.", type->FullName, sealed);
}
// The example displays the following output:
//        TestClass is sealed: True.

using System;

 public class Example
 {
     // Declare InnerClass as sealed.
     sealed public class InnerClass
     {
     }

     public static void Main()
     {
          InnerClass inner = new InnerClass();
          // Get the type of InnerClass.
          Type innerType = inner.GetType();
          // Get the IsSealed property of  innerClass.
          bool isSealed = innerType.IsSealed;
          Console.WriteLine("{0} is sealed: {1}.", innerType.FullName, isSealed);
     }
}
// The example displays the following output:
//        Example+InnerClass is sealed: True.

module Example
// Declare InnerClass as sealed.
[<Sealed>]
type InnerClass() = class end

let inner = InnerClass()
// Get the type of InnerClass.
let innerType = inner.GetType()
// Get the IsSealed property of  innerClass.
let isSealed = innerType.IsSealed
printfn $"{innerType.FullName} is sealed: {isSealed}."
// The example displays the following output:
//        Example+InnerClass is sealed: True.

Public Class Example
    ' Declare InnerClass as sealed.
    Public NotInheritable Class InnerClass
    End Class
    
    Public Shared Sub Main()
         Dim inner As New InnerClass()
         ' Get the type of InnerClass.
         Dim innerType As Type = inner.GetType()
         ' Get the IsSealed property of InnerClass.
         Dim sealed As Boolean = innerType.IsSealed
         Console.WriteLine("{0} is sealed: {1}.", innerType.FullName, sealed)
    End Sub
End Class
' The example displays the following output:
'       Example+InnerClass is sealed: True.

Hinweise

Wenn der aktuelle einen Typparameter eines generischen Type Typs darstellt, gibt diese Eigenschaft immer zurück true.

Weitere Informationen

• TypeAttributes