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Type.TypeHandle Property

Gets the handle for the current Type.

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

'Declaration
Public Overridable ReadOnly Property TypeHandle As RuntimeTypeHandle
'Usage
Dim instance As Type
Dim value As RuntimeTypeHandle

value = instance.TypeHandle

/** @property */
public RuntimeTypeHandle get_TypeHandle ()

public function get TypeHandle () : RuntimeTypeHandle

Property Value

The handle for the current Type.

Exception typeCondition

NotSupportedException

The .NET Compact Framework does not currently support this property.

TypeHandle encapsulates a pointer to an internal data structure that represents the type. This handle is unique during the process lifetime. The handle is valid only in the application domain in which it was obtained.

The following example returns the handle of the corresponding type and passes the handle to a method that gets the type from the handle and displays it.

Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic
Class [MyClass]
    Public myField As Integer = 10
End Class '[MyClass]
Class Type_TypeHandle
    Public Shared Sub Main()
        Try
            Dim [myClass] As New [MyClass]()

            ' Get the type of MyClass.
            Dim myClassType As Type = [myClass].GetType()

            ' Get the runtime handle of MyClass.
            Dim myClassHandle As RuntimeTypeHandle = myClassType.TypeHandle

            DisplayTypeHandle(myClassHandle)
        Catch e As Exception
            Console.WriteLine("Exception: {0}", e.Message.ToString())
        End Try
    End Sub 'Main

    Public Shared Sub DisplayTypeHandle(ByVal myTypeHandle As RuntimeTypeHandle)
        ' Get the type from the handle.
        Dim myType As Type = Type.GetTypeFromHandle(myTypeHandle)
        ' Display the type.
        Console.WriteLine(ControlChars.NewLine + "Displaying the type from the handle:" + ControlChars.NewLine)
        Console.WriteLine("The type is {0}.", myType.ToString())
    End Sub 'DisplayTypeHandle
End Class 'Type_TypeHandle

import System.*;
import System.Reflection.*;
class MyClass
{
    public int myField = 10;
} //MyClass

class Type_TypeHandle
{
    public static void main(String[] args)
    {
        try {
            MyClass myClass = new MyClass();
            // Get the type of MyClass.
            Type myClassType = myClass.GetType();
            // Get the runtime handle of MyClass.
            RuntimeTypeHandle myClassHandle = myClassType.get_TypeHandle();
            DisplayTypeHandle(myClassHandle);
        }
        catch (System.Exception e) {
            Console.WriteLine("Exception: {0}", e.get_Message());
        }
    } //main

    public static void DisplayTypeHandle(RuntimeTypeHandle myTypeHandle)
    {
        // Get the type from the handle.
        Type myType = Type.GetTypeFromHandle(myTypeHandle);
        // Display the type.
        Console.WriteLine("\nDisplaying the type from the handle:\n");
        Console.WriteLine("The type is {0}.", myType.ToString());
    } //DisplayTypeHandle
} //Type_TypeHandle

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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