if program successfully complie . but program is not run or execute.

then give an exception.

I think we can use

System.Data.Exception.

Let me know if I am wrong!!

framework is endowed with provider specific exception class that u can use to handle exception from database. for instance to handle exceptions from SQL Server u can use System.Data.SqlClient.SqlException class. Similarly for OLE DB data source use System.Data.OleDb.OleDbException class.