Cannot Open Database...requested By The Login...???

Hello,

I am using Visual Web Developer 2005 Express Edition and I am following the book:"Beginning ASP.NET 2.0 E-commerce in C# . I am encountering a problem and I haven't got the slightest idea how to solve the problem.

(If you have the book I got to p98)

If I debug then I get the next error: cannot open database"..." requested by the login...

In the book I had to make a GenericDataAccess.cs. What follows are snippets where the error occurs.

public static DataTable ExecuteSelectCommand(DbCommand command)

{

   DataTable table

   try

   {

      command.Connection.Open();

      DbDataReader reader = command.ExecuteReader();

      table = new DataTable();

      table.Load(reader);

      reader.Close();

   }

   catch (Exception ex)

   {

      Utilities.LogError(ex);

      throw ex;  //this is where my error occurs when I debug it

   }

   finally

   {

   commandConnection.close();

   }

   return table;

}

Ideas and sollutions are more than welcome :-)