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Connecting to a Data Source (ADO.NET)

In ADO.NET you use a Connection object to connect to a specific data source by supplying necessary authentication information in a connection string. The Connection object you use depends on the type of data source.

Each .NET Framework data provider included with the .NET Framework has a DbConnection object: the .NET Framework Data Provider for OLE DB includes an OleDbConnection object, the .NET Framework Data Provider for SQL Server includes a SqlConnection object, the .NET Framework Data Provider for ODBC includes an OdbcConnection object, and the .NET Framework Data Provider for Oracle includes an OracleConnection object.

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Other Resources

Connection Strings (ADO.NET)

Connection Pooling (ADO.NET)

Commands and Parameters (ADO.NET)

DataAdapters and DataReaders (ADO.NET)

Transactions and Concurrency (ADO.NET)

ADO.NET Managed Providers and DataSet Developer Center