C# Online Compiler | .NET Fiddle

<no name> by Anonymous

using System;

namespace Oooo
{
    class Base
    {
        public int Some { get; private set; }

        public Base()
        {
            Some = 12345;
        }
    }

    class Der : Base { }

    public class Program
    {
        public static void Main()
        {
            Der d = new Der();
			
			foreach (var i in d.GetType().GetProperties())
			{
				Console.WriteLine("{0}: {1};", i.Name, i.CanWrite);
			}
			
            var pi = d.GetType().GetProperty("Some");
			pi.SetValue(d, 12);
            Console.WriteLine(d.Some);
        }

    }
}

​x
 
using System;
​
namespace Oooo
{
    class Base
    {
        public int Some { get; private set; }
​
        public Base()
        {
            Some = 12345;
        }
    }
​
    class Der : Base { }
​
    public class Program
    {
        public static void Main()
        {
            Der d = new Der();
            
            foreach (var i in d.GetType().GetProperties())
            {
                Console.WriteLine("{0}: {1};", i.Name, i.CanWrite);
            }
            
            var pi = d.GetType().GetProperty("Some");
            pi.SetValue(d, 12);
            Console.WriteLine(d.Some);
        }
​
    }
}

Some: False;
Run-time exception (line -1): Property set method not found.

Stack Trace:

[System.ArgumentException: Property set method not found.]
   at System.Reflection.RuntimePropertyInfo.SetValue(Object obj, Object value, BindingFlags invokeAttr, Binder binder, Object[] index, CultureInfo culture)
   at System.Reflection.RuntimePropertyInfo.SetValue(Object obj, Object value, Object[] index)
   at Oooo.Program.Main()

Last Run:	12:55:40 am
Compile:	0.063s
Execute:	0s
Memory:	48kb
CPU:	0.047s

View IL Code