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Activator.CreateInstanceFrom Method (AppDomain, String, String, Boolean, BindingFlags, Binder, Object[], CultureInfo, Object[])

Creates an instance of the type whose name is specified in the specified remote domain, using the named assembly file and the constructor that best matches the specified parameters.

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

public static ObjectHandle CreateInstanceFrom(
	AppDomain domain,
	string assemblyFile,
	string typeName,
	bool ignoreCase,
	BindingFlags bindingAttr,
	Binder binder,
	Object[] args,
	CultureInfo culture,
	Object[] activationAttributes
)

Parameters

domain
Type: System.AppDomain

The remote domain where the type named typeName is created.

assemblyFile
Type: System.String

The name of a file that contains an assembly where the type named typeName is sought.

typeName
Type: System.String

The name of the preferred type.

ignoreCase
Type: System.Boolean

true to specify that the search for typeName is not case-sensitive; false to specify that the search is case-sensitive.

bindingAttr
Type: System.Reflection.BindingFlags

A combination of zero or more bit flags that affect the search for the typeName 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 typeName constructor. If binder is null, 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 null, 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 typeName constructor. If culture is null, 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.Runtime.Remoting.ObjectHandle
A handle that must be unwrapped to access the newly created instance.

ExceptionCondition
ArgumentNullException

domain or typeName is null.

MissingMethodException

No matching constructor was found.

TypeLoadException

typename was not found in assemblyFile.

FileNotFoundException

assemblyFile was not found.

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.

TargetInvocationException

The constructor, which was invoked through reflection, threw an exception.

SecurityException

The caller does have the required FileIOPermission.

NotSupportedException

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

BadImageFormatException

assemblyFile is not a valid assembly.

-or-

assemblyName was compiled for a version of the common language runtime that is later than the version that is currently loaded.

Use CreateInstanceFrom when a host needs to execute code in an application domain that has restricted security permissions.

Use the ObjectHandle.Unwrap method to unwrap the return value.

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

For information about other exceptions that can be thrown by invoked methods, see the Exceptions sections of the Assembly.LoadFrom and CreateInstance methods.

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

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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