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EnumerableToDispatchMarshaler Class

Marshals the COM IDispatch interface to the .NET Framework IEnumerable interface, and vice versa.


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

public ref class EnumerableToDispatchMarshaler : ICustomMarshaler

The EnumerableToDispatchMarshaler type exposes the following members.

Public methodCleanUpManagedDataPerforms necessary cleanup of the managed data when it is no longer needed.
Public methodCleanUpNativeDataPerforms necessary cleanup of the unmanaged data when it is no longer needed.
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodStatic memberGetInstanceReturns an instance of the custom marshaler.
Public methodGetNativeDataSizeReturns the size in bytes of the unmanaged data to be marshaled.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodMarshalManagedToNativeMarshals an object from managed code to unmanaged code.
Public methodMarshalNativeToManagedMarshals an object from unmanaged code to managed code.
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

This custom marshaler marshals IDispatch to IEnumerable and marshals IEnumerable to IDispatch when a member with a DISPID of -4 exists. When you use the Type Library Importer (Tlbimp.exe) to create a class that implements IEnumerable , the CLR uses this custom marshaler automatically to bridge COM enumerators and .NET enumerators. Calling GetEnumerator results in IDispatch.Invoke being called with a DISPID of -4, and vice versa.

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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