Activator.CreateInstance Method (Type)
Assembly: mscorlib (in mscorlib.dll)
| Exception type | Condition |
|---|---|
| type is a null reference (Nothing in Visual Basic). | |
| type is not a RuntimeType. | |
| type cannot be a TypeBuilder. -or- Creation of TypedReference, ArgIterator, Void, and RuntimeArgumentHandle types, or arrays of those types, is not supported. | |
| The constructor being called throws an exception. | |
| 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 COM type was not obtained through GetTypeFromProgID or GetTypeFromCLSID. | |
| No matching public constructor was found. | |
| type is a COM object but the class identifier used to obtain the type is invalid, or the identified class is not registered. | |
| type is not a valid type. |
The following code example demonstrates calling the CreateInstance method. This code example is part of a larger example provided for the Activator class.
' Create an instance of the StringBuilder type using Activator.CreateInstance. Dim o As Object = Activator.CreateInstance(GetType(StringBuilder)) ' Append a string into the StringBuilder object and display the StringBuilder. Dim sb As StringBuilder = CType(o, StringBuilder) sb.Append("Hello, there.") Console.WriteLine(sb)
- SecurityPermission for the ability to call unmanaged code when creating an instance of a delegate. Associated enumeration: UnmanagedCode
- ReflectionPermission for the ability to invoke operations on all type members. Associated enumeration: MemberAccess
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.
