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近段时间,有朋友叫Insus.NET了解一下反射(Reflection)方面的知识,反射提供了封装程序集、模块和类型的对象(Type类型)。可以使用反射动态创建类型的实例,将类型绑定到现有对象,或从现有对象获取类型并调用其方法或访问其字段和属性。如果代码中使用了属性,可以利用反射对它们进行访问。 首先写一个类,再写一个可读写的属性:
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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 // } } }
创建一个网页,引用两个namespace:
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using Insus.NET; using System.Reflection;
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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) { //实例化类 Member objMember = new Member(); //对属性set值 PropertyInfo pi = objMember.GetType().GetProperty("Name", BindingFlags.Public | BindingFlags.Instance); if (null != pi && pi.CanWrite) { pi.SetValue(objMember, "Insus.NET", null); } //对属性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()); } } }
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