GetITypeInfoForType Method
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Marshal.GetITypeInfoForType Method (Type)


Returns a System.Runtime.InteropServices.ComTypes.ITypeInfo interface from a managed type.

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

public static IntPtr GetITypeInfoForType(
	Type t


Type: System.Type

The type whose ITypeInfo interface is being requested.

Return Value

Type: System.IntPtr

A pointer to the ITypeInfo interface for the t parameter.

Exception Condition

t is not a visible type to COM.


t is a Windows Runtimetype.


A type library is registered for the assembly that contains the type, but the type definition cannot be found.

This method returns a pointer to an ITypeInfo implementation that is based on the original type. Calling an object with GetITypeInfoForType causes the reference count to increment on the interface pointer before the pointer is returned. Always use Marshal.Release to decrement the reference count once you have finished with the pointer. You can apply the System.Runtime.InteropServices.MarshalAsAttribute to replace standard interop marshaling behavior with this custom marshaler.

The following example demonstrates how to retrieve a pointer to the ITypeInfo interface for a type using the GetITypeInfoForType method.

using System;
using System.Runtime.InteropServices;

class Program

    static void Run()
        Console.WriteLine("Calling Marshal.GetITypeInfoForType...");

        // Get the ITypeInfo pointer for an Object type
        IntPtr pointer = Marshal.GetITypeInfoForType(typeof(object));

        Console.WriteLine("Calling Marshal.Release...");

        // Always call Marshal.Release to decrement the reference count.

    static void Main(string[] args)

requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.

.NET Framework
Available since 1.1
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