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

Creates a new instance of the specified type defined in the specified assembly. Parameters specify a binder, binding flags, constructor arguments, culture-specific information used to interpret arguments, and optional activation attributes.

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

public ObjectHandle CreateInstance(
	string assemblyName,
	string typeName,
	bool ignoreCase,
	BindingFlags bindingAttr,
	Binder binder,
	Object[] args,
	CultureInfo culture,
	Object[] activationAttributes
)

Parameters

assemblyName
Type: System.String

The display name of the assembly. See Assembly.FullName.

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.

ignoreCase
Type: System.Boolean

A Boolean value specifying whether to perform a case-sensitive search or not.

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 enables the binding, coercion of argument types, invocation of members, and retrieval of MemberInfo objects using reflection. If binder is null, the default binder is used.

args
Type: System.Object[]

The arguments to pass to the constructor. This array of arguments must match in number, order, and type the parameters of the constructor to invoke. If the default constructor is preferred, args must be an empty array or null.

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. 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
An object that is a wrapper for the new instance specified by typeName. The return value needs to be unwrapped to access the real object.

ExceptionCondition
AppDomainUnloadedException

The operation is attempted on an unloaded application domain.

ArgumentNullException

assemblyName or typeName is null.

BadImageFormatException

assemblyName is not a valid assembly.

-or-

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

FileLoadException

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

FileNotFoundException

assemblyName was not found.

MethodAccessException

The caller does not have permission to call this constructor.

MissingMethodException

No matching constructor was found.

NotSupportedException

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

TypeLoadException

typename was not found in assemblyName.

NullReferenceException

This instance is null.

See AssemblyName for the format of assemblyName.

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

An attempt to call CreateInstance on a target application domain that is not the current application domain will result in a successful load of the assembly in the target application domain. Since an Assembly is not MarshalByRefObject, when this method attempts to return the Assembly for the loaded assembly to the current application domain, the common language runtime will try to load the assembly into the current application domain and the load might fail. The assembly that is loaded into the current application domain might be different from the assembly that was loaded first if the path settings for the two application domains are different.

.NET Framework

Supported in: 4.5.3, 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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