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RegistrationServices.RegisterAssembly Method

Registers the classes in a managed assembly to enable creation from COM.

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

Public Overridable Function RegisterAssembly ( _
	assembly As Assembly, _
	flags As AssemblyRegistrationFlags _
) As Boolean
Dim instance As RegistrationServices
Dim assembly As Assembly
Dim flags As AssemblyRegistrationFlags
Dim returnValue As Boolean

returnValue = instance.RegisterAssembly(assembly, flags)
public boolean RegisterAssembly (
	Assembly assembly, 
	AssemblyRegistrationFlags flags
public function RegisterAssembly (
	assembly : Assembly, 
	flags : AssemblyRegistrationFlags
) : boolean



The assembly to be registered.


An AssemblyRegistrationFlags value indicating any special settings used when registering assembly.

Return Value

true if assembly contains types that were successfully registered; otherwise false if the assembly contains no eligible types.

Exception typeCondition


assembly is a null reference (Nothing in Visual Basic).


The full name of assembly is a null reference (Nothing in Visual Basic).


A method marked with ComRegisterFunctionAttribute is not static.


There is more than one method marked with ComRegisterFunctionAttribute at a given level of the hierarchy.


The signature of the method marked with ComRegisterFunctionAttribute is not valid.


A user-defined custom registration function (marked with the ComRegisterFunctionAttribute attribute) throws an exception.

RegisterAssembly adds the appropriate registry entries for the types in the specified assembly. This method also calls any registration functions found in the assembly.

Use Assembly.Load to get an assembly.

Windows 98, Windows 2000 SP4, Windows Millennium Edition, 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