玩轉C#之【反射 射爆妳】

介紹

Dll-IL-Metadata-反射

1. 透過VS編譯器　編譯成dll/exe
2. 點擊exe的時候，他有一個依賴的環境叫做CLR

反射＋屬性（Property/Field）

public class People

{

    public People()

    {

        Console.WriteLine("{0}",this.GetType().FullName);

    }

    public int Id{get;set;}//Property

    

    public string Name{get;set;}//Property

    

    public string Description;//Field

}

People people = new People();

people.Id = 123;

people.Name ="Lucy";

people.Description ="高級班";

Type type =typeof(People);

object oPeople = Activator.CreateInstance(type);

foreach(var item in type.GetProperties())

{

    Console.WriteLine(type.Name);

    Console.WriteLine(item.Name);

    Console.WriteLine(item.GetValue(oPeople));

    if(item.Name.Equals("Id"))

    {

        item.SetValue(oPeople,234);

    }else if(item.Name.Equals("Name"))

    {

        item.SetValue(oPeople,"風蕭蕭");

    }



}

foreach(var item in type.GetFields())

{

    Console.WriteLine(type.Name);

    Console.WriteLine(item.Name);

    Console.WriteLine(item.GetValue(oPeople));

    if(item.Name.Equals("Description"))

    {

        item.SetValue(oPeople,"昕學員");

    }

}

反射好處和限制

參考資料