/// <summary>
/// This constructor creates and instance of the class that uses a stub of the data access layer for testing.
/// </summary>
/// <param name="stub">A mock of the data access layer for testing.</param>
public NasBLL(INasDAL stub)
{
_db = stub;
}
/// <summary>
/// This constructor creates and instance of the class that uses the actual data access layer.
/// </summary>
public NasBLL()
{
_db = new NasDAL();
}
