AppDomain.CreateInstance Method (String, String)
Assembly: mscorlib (in mscorlib.dll)
'Declaration Public Function CreateInstance ( _ assemblyName As String, _ typeName As String _ ) As ObjectHandle 'Usage Dim instance As AppDomain Dim assemblyName As String Dim typeName As String Dim returnValue As ObjectHandle returnValue = instance.CreateInstance(assemblyName, typeName)
public final function CreateInstance ( assemblyName : String, typeName : String ) : ObjectHandle
The display name of the assembly. See Assembly.FullName.
The fully qualified name of the requested type, including the namespace but not the assembly, as returned by the Type.FullName property.
Return ValueAn object that is a wrapper for the new instance specified by typeName. The return value needs to be unwrapped to access the real object.
Operations are attempted on an unloaded application domain.
assemblyName or typeName is a null reference (Nothing in Visual Basic).
assemblyName is not a valid assembly.
An assembly or module was loaded twice with two different evidences.
assemblyName was not found.
The caller does not have permission to call this constructor.
No matching public constructor was found.
typename was not found in assemblyName.
This method calls the default constructor for typeName.
See AssemblyName for the format of assemblyName.
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.
- FileIOPermission for access to read from a file or directory, and for access to the information in the path itself. Associated enumerations: FileIOPermissionAccess.Read, FileIOPermissionAccess.PathDiscovery.
- WebPermission for the ability to access the location of the assembly if the assembly is not local.
- SecurityPermission for the ability to call unmanaged code when creating an instance of a delegate. Associated enumeration: SecurityPermissionFlag.UnmanagedCode
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.