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AppDomain.CreateInstanceFromAndUnwrap Method (String, String, Object[])

Creates a new instance of the specified type defined in the specified assembly file.

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

public Object CreateInstanceFromAndUnwrap(
	string assemblyName,
	string typeName,
	Object[] activationAttributes
)

Parameters

assemblyName
Type: System.String

The file name and path of the assembly that defines the requested type.

typeName
Type: System.String

The fully qualified name of the requested type, including the namespace but not the assembly (see the Type.FullName property).

activationAttributes
Type: System.Object[]

An array of one or more attributes that can participate in activation. 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
The requested object, or null if typeName is not found.

ExceptionCondition
ArgumentNullException

assemblyName is null.

-or-

typeName is null.

NotSupportedException

The caller cannot provide activation attributes for an object that does not inherit from MarshalByRefObject.

AppDomainUnloadedException

The operation is attempted on an unloaded application domain.

FileNotFoundException

assemblyName was not found.

TypeLoadException

typeName was not found in assemblyName.

MissingMethodException

No parameterless public constructor was found.

MethodAccessException

The caller does not have sufficient permission to call this constructor.

BadImageFormatException

assemblyName is not a valid assembly.

-or-

Version 2.0 or later of the common language runtime is currently loaded and assemblyName was compiled with a later version.

FileLoadException

An assembly or module was loaded twice with two different evidences.

This is a convenience method that combines CreateInstanceFrom and ObjectHandle.Unwrap. This method calls the default constructor for typeName.

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

For more information, see the Activator.CreateInstanceFrom method.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
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