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Asked: 2026-05-12T07:44:53+00:00

How does the OleDbConnection constructor know what provider DLL (I assume it’s a DLL)

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How does the OleDbConnection constructor know what provider DLL (I assume it’s a DLL) to call for a given provider name in the connection string? For example, in the following code…

string cnStr = "Provider=Sybase.ASEOLEDBProvider.2;Server Name=etc...";
OleDbConnection cn = new OleDbConnection(cnStr);

How does OleDbConnection know where to find Provider=Sybase.ASEOLEDBProvider.2?

I’m trying to debug a data access problem in my Winforms app and I think it may be related to a driver bug that’s been fixed, so I may need to upgrade my DLL.

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1 Answer

  1. Editorial Team

    The mapping is done in the registry. For SQLOLEDB, I have a assembly location of %CommonProgramFiles%\System\Ole DB\sqloledb.dll under the appropriate class id.

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