InvalidOperationException Class

The exception that is thrown when a method call is invalid for the object's current state.

For a list of all members of this type, see InvalidOperationException Members.


[Visual Basic]
Public Class InvalidOperationException
   Inherits SystemException
public class InvalidOperationException : SystemException
public __gc class InvalidOperationException : public
class InvalidOperationException extends SystemException

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.


InvalidOperationException is used in cases when the failure to invoke a method is caused by reasons other than invalid arguments. For example, InvalidOperationException is thrown by:

  • MoveNext if objects of a collection are modified after the enumerator is created.
  • GetString if the resource set is closed before the method call is made.

If the method invocation failure is due to invalid arguments, then ArgumentException or one of its derived classes, ArgumentNullException or ArgumentOutOfRangeException, should be thrown instead.

  • The Ldflda Microsoft intermediate language (MSIL) instruction throws InvalidOperationException.

InvalidOperationException uses the HRESULT COR_E_INVALIDOPERATION, which has the value 0x80131509.

For a list of initial property values for an instance of InvalidOperationException, see the InvalidOperationException constructors.


Namespace: System

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

Assembly: Mscorlib (in Mscorlib.dll)

See Also

InvalidOperationException Members | System Namespace | Exception | IEnumerator | ResourceSet | Handling and Throwing Exceptions