C#反射(Reflection)對(duì)類的屬性get或set值實(shí)現(xiàn)思路
2024-09-07 17:05:33
供稿：網(wǎng)友
近段時(shí)間，有朋友叫Insus了解一下反射(Reflection)方面的知識(shí)，反射提供了封裝程序集、模塊和類型的對(duì)象(Type類型)?？梢允褂梅瓷鋭?dòng)態(tài)創(chuàng)建類型的實(shí)例，將類型綁定到現(xiàn)有對(duì)象，或從現(xiàn)有對(duì)象獲取類型并調(diào)用其方法或訪問(wèn)其字段和屬性。如果代碼中使用了屬性，可以利用反射對(duì)它們進(jìn)行訪問(wèn)。
下面的例子，是Insus練習(xí)對(duì)一個(gè)類別的屬性進(jìn)行set和get值。
首先寫一個(gè)類，再寫一個(gè)可讀寫的屬性：
代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
/// <summary>
/// Summary description for Member
/// </summary>
namespace Insus.NET
{
public class Member
{
private string _Name;
public string Name
{
get
{
return _Name;
}
set
{
_Name = value;
}
}
public Member()
{
//
// TODO: Add constructor logic here
//
}
}
}
Insus.NET一向是寫asp.net程序，練習(xí)也是在站點(diǎn)進(jìn)行。
創(chuàng)建一個(gè)網(wǎng)頁(yè)，引用兩個(gè)namespace:
代碼如下:
using Insus.NET;
using System.Reflection;
讀寫屬性：
代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Insus.NET;
using System.Reflection;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
//實(shí)例化類
Member objMember = new Member();
//對(duì)屬性set值
PropertyInfo pi = objMember.GetType().GetProperty("Name", BindingFlags.Public | BindingFlags.Instance);
if (null != pi && pi.CanWrite)
{
pi.SetValue(objMember, "Insus.NET", null);
}
//對(duì)屬性get值
PropertyInfo pii = objMember.GetType().GetProperty("Name", BindingFlags.Public | BindingFlags.Instance);
if (null != pii && pi.CanRead)
{
object obj_Name = pii.GetValue(objMember, null);
Response.Write(obj_Name.ToString());
}
}
}
