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| ArcObjects Help for .NET developers > ArcObjects namespaces > System > ESRI.ArcGIS.esriSystem > Classes > A > AMFWriter CoClass (ArcObjects .NET 10.5 SDK) | 
A sequential AMF Writer.
Use the ISupportErrorInfo method InterfaceSupportsErrorInfo to determine if the object supports extended error information. If the object supports extended error info, VC++ developers should use the OLE/COM IErrorInfo interface to access the ErrorInfo object. Visual Basic developers should use the global error object Err to retrieve this extended error information.
| Interfaces | Description | 
|---|---|
| IAMFWriter | Provides access to members that control the sequential writing of AMF. | 
| ISupportErrorInfo (esriSystem) | Indicates whether a specific interface can return Automation error objects. |