C# – What’s wrong with this reflection code? GetFields() is returning an empty array

c++reflectiontype-parameter

C#, Net 2.0

Here's the code (I took out all my domain-specific stuff, and it still returns an empty array):

using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            ChildClass cc = new ChildClass();
            cc.OtherProperty = 1;

            FieldInfo[] fi = cc.GetType().GetFields();
            Console.WriteLine(fi.Length);
            Console.ReadLine();
        }
    }
    class BaseClass<T>
    {
        private int myVar;

        public int MyProperty
        {
            get { return myVar; }
            set { myVar = value; }
        }


    }

    class ChildClass : BaseClass<ChildClass>
    {
        private int myVar;

        public int OtherProperty
        {
            get { return myVar; }
            set { myVar = value; }
        }

    }
}

Best Solution

The parameterless GetFields() returns public fields. If you want non-public ones, use:

cc.GetType().GetFields(BindingFlags.Instance | BindingFlags.NonPublic);

or whatever appropriate combination you want - but you do need to specify at least one of Instance and Static, otherwise it won't find either. You can specify both, and indeed public fields as well, to get everything:

cc.GetType().GetFields(BindingFlags.Instance | 
                       BindingFlags.Static |
                       BindingFlags.NonPublic |
                       BindingFlags.Public);
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