反射 动态激活代码

创建一个自定义特性类

namespace UseAttribute
{
    [AttributeUsage(AttributeTargets.All, AllowMultiple = false, Inherited = false)] 
    public class UserAttribute:Attribute
    {
        private string comment;
        public UserAttribute(string mm)
        {
            comment = mm;
        }
        public string Comment
        {
            set
            {
                comment=value;
            }
            get
            {
                return comment;
            }
        }


    }
}

创建类 DLL

[assembly:UserAttribute("use attribute for namespace ReflectDll")]
namespace ReflectDll
{
    public interface IC
    {
         void show();
    }
    [UserAttribute("use attribute for TC1 ")]
    public class TC1:IC
    {
        public TC1(string t)
        {
            m_show=t;
        }


        public string Text 
        {
            get{
                return m_show;
            }
        }
       
        public  void show()
        {
            Console.WriteLine(m_show);
        }
        private string m_show = "this is init for TC1";
    }
    public class TC2
    {
        public TC2()
        {


        }
        public  void show()
        {
            Console.WriteLine("This is TC2");
        }
    }
}

动态激活代码 

static void Main(string[] args)
        {
            Assembly asm = Assembly.Load("ReflectDll");
           //调用一个方法
            Type classtype = asm.GetType("ReflectDll.TC1");
            Type[] classtypes = asm.GetTypes();
            foreach(Type t in classtypes)
            {
                Console.WriteLine(t.Name);
            }
            object reflectobj = Activator.CreateInstance(classtype,"This is TC1");
            MethodInfo meth = classtype.GetMethod("show");
            meth.Invoke(reflectobj, null);
           //调用一个属性
            PropertyInfo prop = classtype.GetProperty("Text");
            MethodInfo prop_meth= prop.GetGetMethod();
            Console.WriteLine(prop_meth.Invoke(reflectobj, null));
            //调用一个特性
            Attribute attri = Attribute.GetCustomAttribute(asm, typeof(UserAttribute));
            Console.WriteLine(attri.ToString());
            Attribute[] attri2 = Attribute.GetCustomAttributes(classtype);
            foreach (Attribute at in attri2)
            {
                UserAttribute uat = at as UserAttribute;
                Console.WriteLine(uat.Comment);
            }
        }