CreateInstance Method (Type, Object[])

Activator.CreateInstance Method (Type, Object[])

Creates an instance of the specified type using the constructor that best matches the specified parameters.

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

public static Object CreateInstance (
	Type type,
	params Object[] args
public static Object CreateInstance (
	Type type, 
	Object[] args
public static function CreateInstance (
	type : Type, 
	... args : Object[]
) : Object



The type of object to create.


An array of arguments that match in number, order, and type the parameters of the constructor to invoke. If args is an empty array or a null reference (Nothing in Visual Basic), the constructor that takes no parameters (the default constructor) is invoked.

Return Value

A reference to the newly created object.

Exception typeCondition


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


type is not a RuntimeType.


type cannot be a TypeBuilder.


Creation of TypedReference, ArgIterator, Void, and RuntimeArgumentHandle types, or arrays of those types, is not supported.


The constructor being called throws an exception.


The caller does not have permission to call this constructor.


Cannot create an instance of an abstract class or this member was invoked with a late-binding mechanism.


The COM type was not obtained through GetTypeFromProgID or GetTypeFromCLSID.


No matching public constructor was found.


type is a COM object but the class identifier used to obtain the type is invalid, or the identified class is not registered.


type is not a valid type.

The constructor to be invoked must be accessible and provide the most specific match with the specified argument list.

  • SecurityPermission  for the ability to call unmanaged code when creating an instance of a delegate. Associated enumeration: UnmanagedCode
  • ReflectionPermission  for the ability to invoke operations on all type members. Associated enumeration: ReflectionPermissionFlag/MemberAccess

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

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