app.cs

using System;
using System.Diagnostics;
using System.Reflection;

class App {
    const int C = 1000000;
    
    static void TimeReflection (PropertyInfo p, string value)
    {
        var sw = Stopwatch.StartNew ();
        for (int i = 0; i < C; ++i) {
            int n = (int) p.GetValue (value);
        }
        sw.Stop ();
        Console.WriteLine ("# Reflection: {0}", sw.Elapsed);
    }
    
    static void TimeDelegate (PropertyInfo p, string value)
    {
        var d = (Func<string, int>) Delegate.CreateDelegate (
                typeof (Func<string, int>),
                p.GetGetMethod ());
        var sw = Stopwatch.StartNew ();
        for (int i = 0; i < C; ++i) {
            d (value);
        }
        sw.Stop ();
        Console.WriteLine ("#   Delegate: {0}", sw.Elapsed);
    }
    
    static void Main ()
    {
        var p = "".GetType ().GetProperty ("Length");
        TimeReflection (p, "");
        TimeDelegate (p, "");
    }
}

out.txt

# Reflection: 00:00:00.4263301
#   Delegate: 00:00:00.0028287