using System;

using System.Reflection;

public class Program

{

    public static void Main()

    {

        Type type = typeof(MyClass);

        // 使用 Activator.CreateInstance

        Activator.CreateInstance(type, new object[] { 10 });

        Activator.CreateInstance(type, new object[] { "10" });

        // 指定用 MyClass(string n) 執行 constructor

        ConstructorInfo ctor = type.GetConstructor(new[] { typeof(string) });

        object instance = ctor.Invoke(new object[] { "10" });

    }

}

​

​

class MyClass

{

    public MyClass(int n)

    {

        Console.WriteLine("Int parameter {0}", n);

    }

​

    public MyClass(string n)

    {

        Console.WriteLine("String parameter {0}", n);

    }

}