Type.IsSealed Property


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Gets a value indicating whether the Type is declared sealed.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

public bool IsSealed { get; }

Property Value

Type: System.Boolean

true if the Type is declared sealed; otherwise, false.



If the current Type represents a type parameter of a generic type, this property always returns true.

The following example creates an instance of a sealed class, checks for the IsSealed property, and displays the result.

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.

.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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