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| ArcObjects namespaces > Geodatabase > ESRI.ArcGIS.GeoDatabase > Interfaces > IA > IAttachment Interface > IAttachment.AttachmentID Property (ArcObjects .NET 10.4 SDK) | 
ID that uniquely identifies the attachment.
[Visual Basic .NET] Public ReadOnly Property AttachmentID As Integer
[C#] public int AttachmentID {get;}
[C++]
HRESULT get_AttachmentID(
  long* attID
);
[C++]
Parameters attID [out, retval] attID is a parameter of type long