Export (0) Print
Expand All

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

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,
	Evidence securityAttributes
)
public static ObjectHandle CreateInstanceFrom (
	AppDomain domain, 
	String assemblyFile, 
	String typeName, 
	boolean ignoreCase, 
	BindingFlags bindingAttr, 
	Binder binder, 
	Object[] args, 
	CultureInfo culture, 
	Object[] activationAttributes, 
	Evidence securityAttributes
)
public static function CreateInstanceFrom (
	domain : AppDomain, 
	assemblyFile : String, 
	typeName : String, 
	ignoreCase : boolean, 
	bindingAttr : BindingFlags, 
	binder : Binder, 
	args : Object[], 
	culture : CultureInfo, 
	activationAttributes : Object[], 
	securityAttributes : Evidence
) : ObjectHandle
Not applicable.

Parameters

domain

The remote domain where the type named typeName is created.

assemblyFile

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

typeName

The name of the preferred type.

ignoreCase

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

bindingAttr

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

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

args

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

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

activationAttributes

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. For a detailed description of client-activated objects, see Client Activation.

securityAttributes

Information used to make security policy decisions and grant code permissions.

Return Value

A handle that must be unwrapped to access the newly created instance.

Exception typeCondition

ArgumentNullException

domain or typeName is a null reference (Nothing in Visual Basic).

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-

The common language runtime (CLR) version 2.0 or later is currently loaded, and assemblyName was compiled for a version of the CLR that is later than the currently loaded version. Note that the .NET Framework versions 2.0, 3.0, and 3.5 all use CLR version 2.0.

Use CreateInstanceFrom when a host needs to execute code in an AppDomain with restricted security permissions.

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

NoteNote:

This method uses SecurityAction.LinkDemand to require the immediate caller to have full trust. For important limitations on using the LinkDemand member, see [<topic://cpcondemandvslinkdemand>].

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

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

Community Additions

ADD
Show:
© 2014 Microsoft