Hi, i got a problem that is i create a program based on pervious program that do from others. Now i using the asp.net to create and the sql express 2005 to do it. So the question do anyone know how to open the mdf(master database file) file. I try to use the ms sql & sql express also fail to open. Can anyone tell me how to open the it??

Please help me

Use classes of System.Data.SqlClient/System.Data.OleDB, System.Data.Odbc namespace.

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