The data and XML namespaces in the .NET for data access. 1. System.Data 2. System.Data.Common 3. System.Xml 4. System.Data.OleDb 5. System.Data.SqlClient 6. System.Data.Sql 7. System.Data.SqlTypes 8. Microsoft.SqlServer.Server 9. System.Data.Odbc 10. System.Data.OracleClient 11. System.Transactions

Using system.data

using System.Data; using System.Data.SqlClient if Connection with SqlServer or using System.Data.Oledb if connection with Access

using system.datausing system.configuration

hello friend,using System.Data