This property is only valid for incoming DicomConnection objects passed as parameters to ImageReceivedAsync events, where the C-STORE operation was initiated by an asynchronous  C-MOVE (DicomConnection’s Move method) from the same program.   In addition the remote SCP must include the optional originating MessageID in it’s responses (many appear not to).  If these conditions are fulfilled, then this property provides a pointer to the originating DicomConnection.

The property is provided as an IDispatch which in many languages will need to be cast to a DicomConnection.  This is to avoid an annoying bug in Visual Basic, which refuses to accept that an object can have a property of the same type as itself!

DicomConnection Object  | DicomConnection Members