“Read only” Property Accessor in C#

Question

I have the following class:

class SampleClass
{
   private ArrayList mMyList;

   SampleClass()
   {
       // Initialize mMyList
   }

   public ArrayList MyLis         


        

Answer 1

Just make the property as Sealed (or NotInheritable in VB.NET) and readonly, like this:

   public sealed readonly ArrayList MyList
   {
       get { return mMyList;}
   }

Also don't forget to make the backing field as readonly:

   private readonly ArrayList mMyList;

But in order to initialize the value of mMyList, you must initialize it ONLY in the constructor, as in this example:

public SampleClass()
{
   // Initialize mMyList
   mMyList = new ArrayList();
}