Connect to master Database using your .NET object. Then run the stored procedure below :
EXEC sp_attach_db @dbname = 'dbname', <br /> @filename1 = 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\dbname.mdf', <br /> @filename2 = 'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\dbname_log.LDF'
Please replace the path to the existing mdf and ldf files.
You can also create using
CREATE DATABASE [dbname] ON <br />( FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\dbname.mdf' ),<br />( FILENAME = N'C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\Data\dbname_log.LDF' )<br /> FOR ATTACH<br />GO<br />
command
Hope you can do this now.