IsSealed Property

Type.IsSealed Property

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

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 sealed class Example
    public static void Demo(System.Windows.Controls.TextBlock outputBlock)
        Type t = typeof(Example);
        outputBlock.Text += 
            String.Format("Is class {0} sealed? {1}.\n", 
            t.Name, t.IsSealed);

/* This example produces the following output:

Is class Example sealed? True.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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