Type.IsSealed Property
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Gets a value indicating whether the Type is declared sealed.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public ReadOnly Property IsSealed As Boolean
public bool IsSealed { get; }
Property Value
Type: System.Boolean
true if the Type is declared sealed; otherwise, false.
Remarks
If the current Type represents a type parameter of a generic type, this property always returns true.
Examples
The following example creates an instance of a sealed class, checks for the IsSealed property, and displays the result.
Public NotInheritable Class Example
Public Shared Sub Demo(ByVal outputBlock As System.Windows.Controls.TextBlock)
Dim t As Type = GetType(Example)
outputBlock.Text &= _
String.Format("Is class {0} NotInheritable? {1}." & vbLf, _
t.Name, t.IsSealed)
End Sub
End Class
' This example produces the following output:
'
'Is class Example NotInheritable? True.
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.
*/
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.