Naming conventions: “State” versus “Status”

See Python PEP 8: Function and Variable Names:

Function names should be lowercase, with words separated by underscores as necessary to improve readability.

Variable names follow the same convention as function names.

mixedCase is allowed only in contexts where that's already the prevailing style (e.g. threading.py), to retain backwards compatibility.

The definition of "Off", "Starting" and "Moving" is what i would call a "State". And when you are implying that you are using a "State", it is your "Status". So!

public class Car
{
  public enum State
  {
    Off,
    Starting,
    Moving
  };

  State state = State.Off;

  public State Status
  {
    get { return state ; }
    set { state= value; DoSomething(); }
  }
}

If we take another example from the one stated where you'd like to use the word "Type" such in this case:

public class DataReader
{
    public enum Type
    {
        Sql,
        Oracle,
        OleDb
    }

    public Type Type { get; set; } // <===== Won't compile =====

}

You really need to see that there is a difference between enums and enums, right? But when creating a framework or talking about architecture you need to focus on the simillarities, ok lets find them:

When something is set to a State, it's defined as the "things" Status

Example: The Car's Status is in Running State, Stopped State, and so on.

What you want to acheive in the second example is somewhat this:

myDataReader.Type = DataReader.Database.OleDb

You might think that this says against what i've been preaching about to others, that you need to follow a standard. But, you are following a standard! The Sql-case is a specific case aswell and therefore need a somewhat specific solution.

However, the enum would be re-usable within your System.Data space, and that's what the patterns is all about.

Another case to look at with the "Type" is "Animal" where Type defines the Species.

public class Animal
    {
        public enum Type
        {
            Mammal,
            Reptile,
            JonSkeet
        }

        public Type Species{ get; set; }

    }

This is following a pattern, you don't specificly need to "know" the Object for this and you are not specifing "AnimalType" or "DataReaderType", you can re-use the enums in your namespace of choice.