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Type.GetTypeHandle Method

Gets the handle for the Type of a specified object.

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

'Declaration
Public Shared Function GetTypeHandle ( _
	o As Object _
) As RuntimeTypeHandle

Parameters

o
Type: System.Object

The object for which to get the type handle.

Return Value

Type: System.RuntimeTypeHandle
The handle for the Type of the specified Object.

ExceptionCondition
ArgumentNullException

o is Nothing.

The handles are valid only in the application domain in which they were obtained.

The following example defines the class MyClass1, gets an instance of it, and retrieves the runtime handle of the object.

Imports System
Imports System.Reflection

Public Class MyClass1
    Private x As Integer = 0

    Public Function MyMethod() As Integer 
        Return x
    End Function 'MyMethod
End Class  

Public Class MyClass2

    Public Shared Sub Main()
        Dim myClass1 As New MyClass1()

        ' Get the RuntimeTypeHandle from an object. 
        Dim myRTHFromObject As RuntimeTypeHandle = Type.GetTypeHandle(myClass1)
        ' Get the RuntimeTypeHandle from a type. 
        Dim myRTHFromType As RuntimeTypeHandle = GetType(MyClass1).TypeHandle

        Console.WriteLine(vbLf & "myRTHFromObject.Value:  {0}", _
            myRTHFromObject.Value)
        Console.WriteLine("myRTHFromObject.GetType():  {0}", _
            myRTHFromObject.GetType())
        Console.WriteLine("Get the type back from the handle...")
        Console.WriteLine("Type.GetTypeFromHandle(myRTHFromObject):  {0}", _
            Type.GetTypeFromHandle(myRTHFromObject))

        Console.WriteLine(vbLf & "myRTHFromObject.Equals(myRTHFromType):  {0}", _
            myRTHFromObject.Equals(myRTHFromType))

        Console.WriteLine(vbLf & "myRTHFromType.Value:  {0}", _
            myRTHFromType.Value)
        Console.WriteLine("myRTHFromType.GetType():  {0}", _
            myRTHFromType.GetType())
        Console.WriteLine("Get the type back from the handle...")
        Console.WriteLine("Type.GetTypeFromHandle(myRTHFromType):  {0}", _
            Type.GetTypeFromHandle(myRTHFromType))
    End Sub  
End Class  

' This code example produces output similar to the following: 

'myRTHFromObject.Value:  7549720 
'myRTHFromObject.GetType():  System.RuntimeTypeHandle 
'Get the type back from the handle... 
'Type.GetTypeFromHandle(myRTHFromObject):  MyClass1 

'myRTHFromObject.Equals(myRTHFromType):  True 

'myRTHFromType.Value:  7549720 
'myRTHFromType.GetType():  System.RuntimeTypeHandle 
'Get the type back from the handle... 
'Type.GetTypeFromHandle(myRTHFromType):  MyClass1

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 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

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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