>>229
newとoverride/virtualは機能が違う。↓実行してみて。
using System;
class Base {
　internal virtual string CallMe() {
　　return "Base";
　}
}

class DerivedOverride : Base {
　internal override string CallMe() {
　　return "Override";
　}
}

class DerivedNew : Base {
　internal new string CallMe() {
　　return "New";
　}
}

class c {
　static void Main() {
　　DerivedOverride over = new DerivedOverride();
　　Console.WriteLine(over.CallMe());
　　DerivedNew dnew = new DerivedNew();
　　Console.WriteLine(dnew.CallMe());
　　Base b1 = over;
　　Console.WriteLine(b1.CallMe());
　　Base b52 = dnew;
　　Console.WriteLine(b52.CallMe());
　}
}