|  AcknowledgedChanged | Indicates to the application that the Acknowledged state of the condition has changed.   DISPID (Dispatch ID):   For more information, see AcknowledgedChanged in .NET Reference. | 
|  ActiveChanged | Indicates to the application that the Active state of the condition has changed.   DISPID (Dispatch ID):   For more information, see ActiveChanged in .NET Reference. | 
|  Arguments | Holds arguments that were used to subscribe to events in an OPC-A&E server.   DISPID (Dispatch ID):   For more information, see Arguments in .NET Reference. | 
|  AttributeChanged | Indicates to the application that one or more attributes of the condition have changed.   DISPID (Dispatch ID):   For more information, see AttributeChanged in .NET Reference. | 
|  ChangeMask | Indicates to the client which properties of the condition have changed, to have caused the server to send the event notification.   DISPID (Dispatch ID):   For more information, see ChangeMask in .NET Reference. | 
|  Diagnostics | Diagnostics information (such as warnings) assembled during the operation.   DISPID (Dispatch ID):   For more information, see Diagnostics in .NET Reference. | 
|  DiagnosticsCount | Count of diagnostic information elements assembled during the operation.   DISPID (Dispatch ID):   For more information, see DiagnosticsCount in .NET Reference. | 
|  DiagnosticsSummary | Textual summary of diagnostics information, one message per line.   DISPID (Dispatch ID):   For more information, see DiagnosticsSummary in .NET Reference. | 
|  DisplayString | The display string for the current object.   DISPID (Dispatch ID): 0   For more information, see ToString in .NET Reference. | 
|  EnabledChanged | Indicates to the application that the Enabled state of the condition has changed.   DISPID (Dispatch ID):   For more information, see EnabledChanged in .NET Reference. | 
|  ErrorId | Gets or sets the error ID of the error.   DISPID (Dispatch ID):   For more information, see ErrorId in .NET Reference. | 
|  ErrorMessage | Gets or sets a message that describes the current exception.   DISPID (Dispatch ID):   For more information, see ErrorMessage in .NET Reference. | 
|  ErrorMessageBrief | The first line of the error message.   DISPID (Dispatch ID):   For more information, see ErrorMessageBrief in .NET Reference. | 
|  EventData | Event notification information.   DISPID (Dispatch ID):   For more information, see EventData in .NET Reference. | 
|  Exception | Gets the current exception. Contains null reference when no exception.   DISPID (Dispatch ID):   For more information, see Exception in .NET Reference. | 
|  MessageChanged | Indicates to the application that the Message of the condition has changed.   DISPID (Dispatch ID):   For more information, see MessageChanged in .NET Reference. | 
|  NormalizedDiagnostics | A normalized Diagnostics collection.   DISPID (Dispatch ID):   For more information, see NormalizedDiagnostics in .NET Reference. | 
|  NormalizedException | A normalized Exception object, or null if there was no error.   DISPID (Dispatch ID):   For more information, see NormalizedException in .NET Reference. | 
|  QualityChanged | Indicates to the application that the Quality of the condition has changed.   DISPID (Dispatch ID):   For more information, see QualityChanged in .NET Reference. | 
|  Refresh | Denotes whether this notification was triggered by subscription refresh.   DISPID (Dispatch ID):   For more information, see Refresh in .NET Reference. | 
|  RefreshComplete | When True, this notification denotes that the subscription refresh is complete.   DISPID (Dispatch ID):   For more information, see RefreshComplete in .NET Reference. | 
|  SeverityChanged | Indicates to the application that the Severity of the condition has changed.   DISPID (Dispatch ID):   For more information, see SeverityChanged in .NET Reference. | 
|  SubconditionChanged | Indicates to the application that the subcondition (SubconditionName) of the condition has changed.   DISPID (Dispatch ID):   For more information, see SubconditionChanged in .NET Reference. | 
|  Succeeded | Gets indication whether the operation has succeeded.   DISPID (Dispatch ID):   For more information, see Succeeded in .NET Reference. | 
|  ToString | Returns a string that represents the current object.   DISPID (Dispatch ID):   For more information, see ToString in .NET Reference. |