Passing an array of Structs to a COM Interface

Question

I have a COM interface with an IDL file with the following declared:

typedef [uuid(D7B6C495-FFF3-11E0-8A39-08002700D831)]
struct PORT_CONFIG
{
  unsigned char  r         


        

Answer 1

I now have the answer to my own problem. For some reason the interop layer fails on SAFEARRAY parameters when the interop type is embedded (the default in VS2010). To work around this issue right-click the reference to the COM object and set Embed Interop Type to False.

I wish that I could take credit for figuring out this answer, but the credit belongs to Michael Taylor:

http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/1325d24c-db0f-43a1-9780-b68a843d816b