Marshal.GetITypeInfoForType(Type) Method
Definition
Important
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Returns a ITypeInfo interface from a managed type.
public:
static IntPtr GetITypeInfoForType(Type ^ t);public static IntPtr GetITypeInfoForType (Type t);[System.Security.SecurityCritical]
public static IntPtr GetITypeInfoForType (Type t);static member GetITypeInfoForType : Type -> nativeint[<System.Security.SecurityCritical>]
static member GetITypeInfoForType : Type -> nativeintPublic Shared Function GetITypeInfoForType (t As Type) As IntPtrParameters
- t
- Type
The type whose ITypeInfo interface is being requested.
Returns
nativeint
A pointer to the ITypeInfo interface for the t parameter.
- Attributes
Exceptions
A type library is registered for the assembly that contains the type, but the type definition cannot be found.
Examples
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.
Marshal.Release(pointer);
}
static void Main(string[] args)
{
Run();
}
}
Imports System.Runtime.InteropServices
Module Program
Sub Run()
' Dim a pointer
Dim pointer As IntPtr
Console.WriteLine("Calling Marshal.GetIUnknownForObjectInContext...")
' Get the ITypeInfo pointer for an Object type
pointer = Marshal.GetITypeInfoForType(Type.GetType("System.Object"))
Console.WriteLine("Calling Marshal.Release...")
' Always call Marshal.Release to decrement the reference count.
Marshal.Release(pointer)
End Sub
Sub Main(ByVal args() As String)
Run()
End Sub
End Module
Remarks
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.
