Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

Type.BaseType Property

Gets the type from which the current Type directly inherits.

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

'Declaration
Public MustOverride ReadOnly Property BaseType As Type

Property Value

Type: System.Type
The Type from which the current Type directly inherits, or Nothing if the current Type represents the Object class or an interface.

Implements

_Type.BaseType

The base type is the type from which the current type directly inherits. Object is the only type that does not have a base type, therefore Nothing is returned as the base type of Object.

Interfaces inherit from zero or more base interfaces; therefore, this property returns Nothing if the Type object represents an interface. The base interfaces can be determined with GetInterfaces or FindInterfaces.

If the current Type represents a constructed generic type, the base type reflects the generic arguments. For example, consider the following declarations:


Class B(Of U)
End Class
Class C(Of T)
    Inherits B(Of T)
End Class


For the constructed type C<int> (C(Of Integer) in Visual Basic), the BaseType property returns B<int>.

If the current Type represents a type parameter of a generic type definition, BaseType returns the class constraint, that is, the class the type parameter must inherit. If there is no class constraint, BaseType returns System.Object.

This property is read-only.

The following example demonstrates using the BaseType property.


Imports System

Class TestType

    Public Shared Sub Main()
        Dim t As Type = GetType(Integer)
        Console.WriteLine("{0} inherits from {1}.", t, t.BaseType)
    End Sub 'Main
End Class 'TestType


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

Community Additions

Show:
© 2017 Microsoft