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Activator.CreateInstance Method (Type, BindingFlags, Binder, Object[], CultureInfo, Object[])

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

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

static member CreateInstance : 
        type:Type * 
        bindingAttr:BindingFlags * 
        binder:Binder * 
        args:Object[] * 
        culture:CultureInfo * 
        activationAttributes:Object[] -> Object

Parameters

type
Type: System.Type

The type of object to create.

bindingAttr
Type: System.Reflection.BindingFlags

A combination of zero or more bit flags that affect the search for the type constructor. If bindingAttr is zero, a case-sensitive search for public constructors is conducted.

binder
Type: System.Reflection.Binder

An object that uses bindingAttr and args to seek and identify the type constructor. If binder is a null reference (Nothing in Visual Basic), the default binder is used.

args
Type: System.Object[]

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.

culture
Type: System.Globalization.CultureInfo

Culture-specific information that governs the coercion of args to the formal types declared for the type constructor. If culture is a null reference (Nothing in Visual Basic), the CultureInfo for the current thread is used.

activationAttributes
Type: System.Object[]

An array of one or more attributes that can participate in activation. This is typically an array that contains a single UrlAttribute object. The UrlAttribute specifies the URL that is required to activate a remote object.

Return Value

Type: System.Object
A reference to the newly created object.

ExceptionCondition
ArgumentNullException

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

ArgumentException

type is not a RuntimeType.

-or-

type is an open generic type (that is, the ContainsGenericParameters property returns true).

NotSupportedException

type cannot be a TypeBuilder.

-or-

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

-or-

activationAttributes is not an empty array, and the type being created does not derive from MarshalByRefObject.

-or-

The assembly that contains type is a dynamic assembly that was created with AssemblyBuilderAccess.Save.

-or-

The constructor that best matches args has varargs arguments.

TargetInvocationException

The constructor being called throws an exception.

MethodAccessException

The caller does not have permission to call this constructor.

MemberAccessException

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

InvalidComObjectException

The COM type was not obtained through GetTypeFromProgID or GetTypeFromCLSID.

MissingMethodException

No matching constructor was found.

COMException

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

TypeLoadException

type is not a valid type.

The constructor to be invoked must provide the most specific match with the specified argument list under the constraints of the specified binder and binding attributes.

The activationAttributes parameter is related to client-activated objects; see Client Activation.

NoteNote

Starting with the .NET Framework 2.0 Service Pack 1, this method can be used to access nonpublic types and members if the caller has been granted ReflectionPermission with the ReflectionPermissionFlag.RestrictedMemberAccess flag and if the grant set of the nonpublic types and members is restricted to the caller’s grant set or to a subset thereof. (See Security Considerations for Reflection.)

To use this functionality, your application should target the .NET Framework 3.5 or later.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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