C # Runtime instantiates class objects by string

Memo, write a C # version.

Using system;using system.collections.generic;using system.linq;using system.text;using System.Threading.Tasks;        Namespace cs_test{public class Basebullet {public float x;        public float y;        public int color;        public string name;            Public Basebullet (string name, int color) {this.name = name;        This.color = color;            } public virtual void say (String str) {Console.WriteLine (str);            Console.WriteLine ("Name is" + name);        Console.WriteLine ("Color is" + color);         }} public class Bullettype1:basebullet {public BulletType1 (string name, int color): base (name, color)            {} public override void Say (String str) {Base.say (str);        Console.WriteLine ("Shoot from BulletType1");         }} public class Bullettype2:basebullet {public BulletType2 (string name, int color): base (name, color)     {   } public override void Say (String str) {Base.say (str);        Console.WriteLine ("Shoot from BulletType2");            }} class Program {static void Main (string[] args) {int id = 1; String className = "Cs_test.bullettype" + ID.            ToString ();            System.Type t = System.Type.GetType (className);            Basebullet B1 = activator.createinstance (t, "John", 1) as Basebullet;            B1.say ("Hello");            ++id; ClassName = "Cs_test.bullettype" + ID.            ToString ();            t = System.Type.GetType (className);            Basebullet B2 = activator.createinstance (t, "Sam", 2) as Basebullet;        B2.say ("Goodbye"); }    }}

　　

C # Runtime instantiates class objects by string