C#

# define OPEN  1
# define CLOSE 2
# define READ  3
# define WRITE 4

namespace Support
{
  public static class Command
  {
    public const int Open  = OPEN ;
    public const int Close = CLOSE ;
    public const int Read  = READ ;
    public const int Write = WRITE ;
  }

  // or

  public enum Command
  {
    Open  = OPEN
  ,
    Close = CLOSE
  ,
    Read  = READ
  ,
    Write = WRITE
  }
}

namespace Support
{
  public static class Command
  {
    public const int Open  = 1 ;
    public const int Close = 2 ;
    public const int Read  = 3 ;
    public const int Write = 4 ;
  }

  // or

  public enum Command
  {
    Open  = 1
  ,
    Close = 2
  ,
    Read  = 3
  ,
    Write = 4
  }
}

PIEBALDconsult wrote:

the quick and dirty way would be to pass it through a C pre-processor.

O.Calderbank wrote:

I am currently creating a media player

O.Calderbank wrote:

What will I need to create e.g. access database ?, and what will I need to do for it like create a class coding to list in a drop down box etc.

[XmlRoot("Persons")]
public class People : List<Person>
{

}

[XmlRoot("Person")]
public class Person
{
    public Person()
    {
    }

    public Person(string name)
    {
        Name = name;
    }

    [XmlElement("Name")]
    public string Name { get; set; }

}

using (StringWriter writer = new StringWriter())
            {
                XmlSerializer serializer = new XmlSerializer(typeof(Persons));
                XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
                namespaces.Add(string.Empty, string.Empty);
                XmlWriter xmlWriter = XmlWriter.Create(writer, settings);
                serializer.Serialize(xmlWriter, personList, namespaces);
            }

using (Stream stream = File.Open("people.bin", FileMode.Create))
            {
                BinaryFormatter bin = new BinaryFormatter();
                bin.Serialize(stream, People);
            }

using (Stream stream = File.Open("people.bin", FileMode.Open))
            {
                BinaryFormatter bin = new BinaryFormatter();
                var people = (List<Person>)bin.Deserialize(stream);
            }