VB.Net OleDbDataReader Vs SqlDataReader

Posted on 2009-07-09
Last Modified: 2012-05-07
In ASP.Net (3.5)

What is the main difference between  
OleDbDataReader  Vs  SqlDataReader    ?
- performance, versatility, syntax.

Does it make a difference when the Connection in web.config is using providerName="System.Data.SqlClient"
Question by:dennisdominic
  • 3
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Accepted Solution

lppperes earned 500 total points
ID: 24820271
Hi dennisdominic,
All documentation of microsoft says that you should use SqlDataReader when you connect to a SQL Server database and OleDbDataReader when you connect to a database that doesn´t have a specific data provider (like access databases).
Because all DataReaders, including the OleDbDataReader, the SqlDataReader, and other managed provider's DataReaders implement the same IDataReader interface, they should all provide the same base set of functionality.
If your config is using System.Data.SqlClient, you are using a SQL Server database, so you should use SqlDataReader, that Microsoft recomends.

Author Comment

ID: 24820568
Does it provide more flexibility in the Code to use OleDbDataReader, if I may change from SQL Server to other Database?

Expert Comment

ID: 24820623
Exactly. It is the benefit of using OleDbDataReader: you can change of database type (SQL Server, Oracle, Access, MySQL, etc) without any changes to your code, just to your connection string.
But, if your application will use only one database, it´s better to use a specialized data provider.

Author Comment

ID: 24820635
Will it be better performance wise if I use SqlDataReader on SQL Server?

Expert Comment

ID: 24820663
All documentation says that. I use OleDb classes, cause my applications always have to work with several databases, and never had problems with performance.

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