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ExternalException Class

The base exception type for all COM interop exceptions and structured exception handling (SEH) exceptions.

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

[SerializableAttribute] 
[ComVisibleAttribute(true)] 
public class ExternalException : SystemException
/** @attribute SerializableAttribute() */ 
/** @attribute ComVisibleAttribute(true) */ 
public class ExternalException extends SystemException
SerializableAttribute 
ComVisibleAttribute(true) 
public class ExternalException extends SystemException

To enhance interoperability between legacy systems and the common language runtime, the ErrorCode property stores an integer value (HRESULT) that identifies the error. User defined exceptions should never derive from ExternalException, and an ExternalException should never be thrown by user code. Use the specific exceptions that derive from ExternalException instead.

ExternalException uses the HRESULT E_FAIL which has the value 0x80004005.

ExternalException uses the default Equals implementation, which supports reference equality.

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

System.Object
   System.Exception
     System.SystemException
      System.Runtime.InteropServices.ExternalException
         Derived Classes
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0
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