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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
'Usage
Dim o As Object 
Dim returnValue As RuntimeTypeHandle 

returnValue = Type.GetTypeHandle(o)

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.

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

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, 1.1, 1.0
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