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AppDomain.CreateInstanceFromAndUnwrap Method (String, String)

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

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

'Declaration
Public Function CreateInstanceFromAndUnwrap ( _
	assemblyName As String, _
	typeName As String _
) As Object
'Usage
Dim instance As AppDomain 
Dim assemblyName As String 
Dim typeName As String 
Dim returnValue As Object 

returnValue = instance.CreateInstanceFromAndUnwrap(assemblyName, _
	typeName)

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, as returned by the Type.FullName property.

Return Value

Type: System.Object
The requested object, or Nothing if typeName is not found.

ExceptionCondition
ArgumentNullException

assemblyName is Nothing.

-or-

typeName is Nothing.

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.

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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