C#

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

namespace SimpleTestApp
{
    class Program
    {
        static void Main(string[] args)
        {
            BindingFlags flags = BindingFlags.Instance | BindingFlags.NonPublic;
            MethodInfo mi = typeof(Program).GetMethod("MyMethod", flags);
            Attribute[] att = (Attribute[])mi.GetCustomAttributes(typeof(MyAttribute), true);
            if (att != null)
            {
            }
        }

        [MyAttribute("Hello")]
        private void MyMethod()
        {
        }
    }


    public class MyAttribute : Attribute
    {
        private string _name;

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }
        public MyAttribute(string name)
            : base()
        {
            _name = name;
        }
    }
}

Pete O`Hanlon wrote:

Did it find the method? I suspect that it hasn't found the method because the binding flags haven't included the BindingFlags.NonPublic flag. The following code finds a custom attribute on a private member with no problem.

<br />
using System;<br />
using System.Runtime.InteropServices;<br />
<br />
[DllImport("shell32.dll")]<br />
public static extern int test(int MyInt);<br />

ArrayList al = new ArrayList();
for (int x = 0; x < 15000000; x++)
{
    al.Add(System.Guid.NewGuid().ToString());
}
MessageBox.Show("Finished loading.");
al.Sort();
MessageBox.Show("Finished Sort.");