Access Private Fields And Invoke Private Methods In .NET

using System;
using System.Reflection;

class Test
{
    private int _number;
    private int Number
    {
        get { return _number; }
        set { _number = value; }
    }

    private int PrivateAdd(int a, int b)
    {
        return a + b;
    }

    private static int StaticAdd(int a, int b)
    {
        return a + b;
    }

    static void Main()
    {
        //Instance method
        Test test = new Test();
        MethodInfo privateMethod = test.GetType().GetMethod("PrivateAdd",
            BindingFlags.NonPublic | BindingFlags.Instance);
        object[] parameters = new object[] { 1, 2 };
        int result = (int)privateMethod.Invoke(test, parameters);

        //Static method 
        MethodInfo staticMethod = typeof(Test).GetMethod("StaticAdd",
            BindingFlags.NonPublic | BindingFlags.Static);
        result = (int)staticMethod.Invoke(null, parameters);

        //Private field 
        FieldInfo privateField = test.GetType().GetField("_number",
            BindingFlags.NonPublic | BindingFlags.Instance);
        privateField.SetValue(test, 123);
        result = (int)privateField.GetValue(test);

        //Private property
        PropertyInfo privateProperty = test.GetType().GetProperty("Number",
            BindingFlags.NonPublic | BindingFlags.Instance);
        privateProperty.SetValue(test, 456, null);
        result = (int)privateProperty.GetValue(test, null);

        Console.WriteLine("Done");
        Console.Read();
    }
}