sql exception was unhandled by user code

 
Whatz wrong with below code??? im getting  'sql exception was unhandled by user code' exception..

Why im am getting this??


public DataSet GetInterestData(DateTime dtSaleDate)

    {

        Database database = DatabaseFactory.CreateDatabase(CTBConnectionString);

        DbConnection con = database.CreateConnection();

        DbCommand command1 = database.GetStoredProcCommand("spGetInterestCalculationValue");

        database.AddInParameter(command1, "@TransferDate", DbType.DateTime, dtSaleDate);

        return database.ExecuteDataSet(command1);

    }