Type.GetTypeHandle Method
Gets the handle for the Type of a specified object.
[Visual Basic] Public Shared Function GetTypeHandle( _ ByVal o As Object _ ) As RuntimeTypeHandle [C#] public static RuntimeTypeHandle GetTypeHandle( object o ); [C++] public: static RuntimeTypeHandle GetTypeHandle( Object* o ); [JScript] public static function GetTypeHandle( o : Object ) : RuntimeTypeHandle;
Parameters
- o
- The Object for which to get the Type handle.
Return Value
The handle for the Type of the specified Object.
Remarks
The handles are valid only in the application domain in which they were obtained.
Example
[Visual Basic, C#, C++] The following example defines the class MyClass1, gets an instance of it, and retrieves the runtime handle of the object.
[Visual Basic] 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 'MyClass1 _ 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("myRTHFromObject.Value: {0}", myRTHFromObject.Value) Console.WriteLine("myRTHFromObject.Type: {0}", myRTHFromObject.GetType()) Console.WriteLine("myRTHFromType.Value: {0}", myRTHFromType.Value) Console.WriteLine("myRTHFromType.Type: {0}", myRTHFromType.GetType()) End Sub 'Main End Class 'MyClass2 [C#] using System; using System.Reflection; public class MyClass1 { private int x=0; public int MyMethod() { return x; } } public class MyClass2 { public static void Main() { MyClass1 myClass1 = new MyClass1(); // Get the RuntimeTypeHandle from an object. RuntimeTypeHandle myRTHFromObject = Type.GetTypeHandle(myClass1); // Get the RuntimeTypeHandle from a type. RuntimeTypeHandle myRTHFromType = typeof(MyClass1).TypeHandle; Console.WriteLine("myRTHFromObject.Value: {0}", myRTHFromObject.Value); Console.WriteLine("myRTHFromObject.Type: {0}", myRTHFromObject.GetType()); Console.WriteLine("myRTHFromType.Value: {0}", myRTHFromType.Value); Console.WriteLine("myRTHFromType.Type: {0}", myRTHFromType.GetType()); } } [C++] #using <mscorlib.dll> using namespace System; using namespace System::Reflection; public __gc class MyClass1 { private: int x; public: int MyMethod() { return x; } }; int main() { MyClass1* myClass1 = new MyClass1(); // Get the RuntimeTypeHandle from an object. RuntimeTypeHandle myRTHFromObject = Type::GetTypeHandle(myClass1); // Get the RuntimeTypeHandle from a type. RuntimeTypeHandle myRTHFromType = __typeof(MyClass1)->TypeHandle; Console::WriteLine(S"myRTHFromObject.Value: {0}",__box( myRTHFromObject.Value)); Console::WriteLine(S"myRTHFromObject.Type: {0}", __box(myRTHFromObject)->GetType()); Console::WriteLine(S"myRTHFromType.Value: {0}",__box( myRTHFromType.Value)); Console::WriteLine(S"myRTHFromType.Type: {0}", __box(myRTHFromType)->GetType()); }
[JScript] No example is available for JScript. To view a Visual Basic, C#, or C++ example, click the Language Filter button
in the upper-left corner of the page.
Requirements
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Common Language Infrastructure (CLI) Standard
See Also
Type Class | Type Members | System Namespace | RuntimeTypeHandle | TypeHandle | GetTypeFromHandle