Error when trying to return a array from a COM+ Object

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Bill Smith - 12 May 2004 01:10 GMT

I have written a COM+ DLL in vb.net to return all the user samaccount name
in a given OU. The results are returned as a dataview.
As the ASP.NET page calls the function from the COM+ it fails with the
following error:

The type System.Data.DataView in Assembly System.Data, Version=1.0.5000.0,
Culture=neutral, PublicKeyToken=b77a5c561934e089 is not marked as
serializable.

I tried just returning one name as a string and it worked fine. So is there
something I should be doing to return Arraylists and datasets??

Thanks

Bill

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SqlRanger - 12 May 2004 07:51 GMT

You can't return a dataview from a serviced component in a COM+ server
application because datatviews are not serializable. If the component were
in a library application you could return a dataview because library
applications load in the same proccess as the client and so don't need to be
serialized. I suggest you return a dataset or an array.

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MVP Microsoft .NET

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Error when trying to return a array from a COM+ Object

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