You can do really crazy things with C#

TypeWrapper.cs

public class TypeWrapper
{
    private readonly dynamic dyn;
    private readonly Dictionary<string, CallSite<Action<CallSite, object, object>>> setters
        = new Dictionary<string, CallSite<Action<CallSite, object, object>>>();

    private readonly Dictionary<string, CallSite<Func<CallSite, object, object>>> getters
        = new Dictionary<string, CallSite<Func<CallSite, object, object>>>();

    public TypeWrapper(object d)
    {
        this.dyn = d;
        Type type = d.GetType();
        foreach (var p in type.GetProperties(BindingFlags.Instance | BindingFlags.Public))
        {
            string name = p.Name;
            CallSite<Action<CallSite, object, object>> set = CallSite<Action<CallSite, object, object>>.Create(
            Microsoft.CSharp.RuntimeBinder.Binder.SetMember(
                CSharpBinderFlags.None,
                name,
                type,
                new[] { CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null) ,
                        CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null) }));

            this.setters.Add(name, set);

            CallSite<Func<CallSite, object, object>> get = CallSite<Func<CallSite, object, object>>.Create(
            Microsoft.CSharp.RuntimeBinder.Binder.GetMember(
                CSharpBinderFlags.None,
                name,
                type,
                new[] { CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null) }));

            this.getters.Add(name, get);
        }
    }

    public void Set(string name, object value)
    {
        var set = this.setters[name];
        set.Target(set, this.dyn, value);
    }

    public object Get(string name)
    {
        var get = this.getters[name];
        return get.Target(get, this.dyn);
    }
}

How can you make this work for nested properties?

Way old, but it might be faster if you change the dyn field to an object instead of dynamic. That way it doesn't compile like this.

EDIT: Note the use of dynamic binding in your Get and Set functions.