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Type.IsNested Property

Gets a value indicating whether the current Type object represents a type whose definition is nested inside the definition of another type.

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

Public ReadOnly Property IsNested As Boolean
Dim instance As Type 
Dim value As Boolean 

value = instance.IsNested

Property Value

Type: System.Boolean
true if the Type is nested inside another type; otherwise, false.

The IsNested property returns true for all nested types, regardless of visibility. To test for nesting and visibility at the same time, use the related properties IsNestedAssembly, IsNestedFamily, IsNestedFamANDAssem, IsNestedFamORAssem, IsNestedPrivate, or IsNestedPublic.


The VisibilityMask enumeration member selects the visibility attributes for a type.

The following code example displays the value of the IsNested property for both a protected nested class and a public nested class.

Imports System

Public Class Example
    Protected Class NestedProtected
    End Class 

    Public Class NestedPublic
    End Class 

    Public Shared Sub Main()
        With GetType(NestedProtected)
            Console.WriteLine("Is " & .FullName & " nested? " & .IsNested)
        End With 
        With GetType(NestedPublic)
            Console.WriteLine("Is " & .FullName & " nested? " & .IsNested)
        End With 
    End Sub 
End Class 

' This example produces the following output: 

'Is Example+NestedProtected nested? True 
'Is Example+NestedPublic nested? True 

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

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