Activator.CreateInstanceFrom Method (AppDomain, String, String, Boolean, BindingFlags, Binder, Object, CultureInfo, Object, Evidence)
Note: This API is now obsolete. The non-obsolete alternative is CreateInstanceFrom(AppDomain, String, String, Boolean, BindingFlags, Binder, Object, CultureInfo, Object).
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.
Assembly: mscorlib (in mscorlib.dll)
[ObsoleteAttribute("Methods which use Evidence to sandbox are obsolete and will be removed in a future release of the .NET Framework. Please use an overload of CreateInstanceFrom which does not take an Evidence parameter. See http://go.microsoft.com/fwlink/?LinkID=155570 for more information.")] public static ObjectHandle CreateInstanceFrom( AppDomain domain, string assemblyFile, string typeName, bool ignoreCase, BindingFlags bindingAttr, Binder binder, Object args, CultureInfo culture, Object activationAttributes, Evidence securityAttributes )
- Type: System.AppDomain
The remote domain where the type named typeName is created.
- Type: System.String
The name of a file that contains an assembly where the type named typeName is sought.
- Type: System.String
The name of the preferred type.
- Type: System.Boolean
true to specify that the search for typeName is not case-sensitive; false to specify that the search is case-sensitive.
- 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.
- Type: System.Reflection.Binder
An object that uses bindingAttr and args to seek and identify the typeName constructor. If binder is null, the default binder is used.
- Type: System.Object
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 null, the constructor that takes no parameters (the default constructor) is invoked.
- 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.
- Type: System.Object
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.
- Type: System.Security.Policy.Evidence
Information used to make security policy decisions and grant code permissions.
Return ValueType: System.Runtime.Remoting.ObjectHandle
A handle that must be unwrapped to access the newly created instance.
domain or typeName is null.
No matching constructor was found.
typename was not found in assemblyFile.
assemblyFile was not found.
The caller does not have permission to call this constructor.
Cannot create an instance of an abstract class, or this member was invoked with a late-binding mechanism.
The constructor, which was invoked through reflection, threw an exception.
The caller does have the required FileIOPermission.
activationAttributes is not an empty array, and the type being created does not derive from MarshalByRefObject.
assemblyFile is not a valid assembly.
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 application domain that has restricted security permissions.
Use the ObjectHandle.Unwrap method to unwrap the return value.
The activationAttributes parameter is related to client-activated objects; see Client Activation.
This method uses SecurityAction.LinkDemand to require the immediate caller to have full trust. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.
for the ability to call unmanaged code when creating an instance of a delegate. Associated enumeration: SecurityPermissionFlag.UnmanagedCode
for supplying evidence. Associated enumeration: SecurityPermissionFlag.ControlEvidence
for accessing nonpublic types and members when the grant set of the nonpublic types and members is restricted to the caller's grant set or to a subset thereof. Associated enumeration: ReflectionPermissionFlag.RestrictedMemberAccess
for accessing nonpublic types and members regardless of their grant set. Associated enumeration: ReflectionPermissionFlag.MemberAccess
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.