Activator.CreateInstance Method (String, String)

ActivatorCreateInstance Method (String, String)

Creates an instance of the type whose name is specified, using the named assembly and default constructor.

Namespace: System
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0

Syntax

public static ObjectHandle CreateInstance(
	string assemblyName,
	string typeName
)

assemblyName: Type: SystemString
The name of the assembly where the type named typeName is sought. If assemblyName is null, the executing assembly is searched.
typeName: Type: SystemString
The name of the preferred type.

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

Exceptions

Exception	Condition
ArgumentNullException	typeName is null.
MissingMethodException	No matching public constructor was found.
TypeLoadException	typename was not found in assemblyName.
FileNotFoundException	assemblyName was not found.
MethodAccessException	The caller does not have permission to call this constructor.
MemberAccessException	You 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.
InvalidComObjectException	The COM type was not obtained through GetTypeFromProgID or GetTypeFromCLSID.
NotSupportedException	Creation of TypedReference, ArgIterator, Void, and RuntimeArgumentHandle types, or arrays of those types, is not supported.
BadImageFormatException	assemblyName 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.
FileLoadException	An assembly or module was loaded twice with two different evidences.