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Asked: 2026-05-11T15:39:42+00:00

I am using a COM DLL, a function call which returns an ADO RecordSet

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I am using a COM DLL, a function call which returns an ADO RecordSet object and want to refer to it in my C# application.

Have added the reference, put the msado15,interop.adodb dll in the bin directory and debug directory, added assembly key in web.config but still get the following error:

The type ‘ADODB.Recordset’ is defined in an assembly that is not referenced. You must add a reference to assembly ‘ADODB, Version=7.0.3300.0, Culture=neutral,PublicKeyToken=b03f5f7f11d50a3a’.

Any ideas on what is the right way to do this?

Edit:Which assembly do I add to GAC? Where can i find the ADODB.dll?

Added the reference to c:\program files\microsoft.net\primary interop assemlies\adodb.dll and got it working finally

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1 Answer

  1. Try changing your reference to ADODB.dll in your project to ‘Copy Local’ true.

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