C#中反射的使用（How to use reflect in CSharp）（1）

最近想做一个插件式的软件给公司的监控用，初步的想法是使用C#去反射Dll，Invoke其中的方法。此文仅供开发参考，不涉及原理，98%的代码以及2%的废话。

测试Solution是这么建的（.NET FRAMEWORK 4.5.1）：

Person类代码：

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4
 5 namespace PersonMoudle
 6 {
 7     public class Person
 8     {
 9         public Person()
10         {
11             Name = "Sirius";
12             Age = 25;
13             Height = 172;
14             Sex = "Middle";
15         }
16         public Person(string name, int age, float height, string sex)
17         {
18             Name = name;
19             Age = age;
20             Height = height;
21             Sex = sex;
22         }
23
24         public string Name { get; set; }
25         public int Age { get; set; }
26         public float Height { get; set; }
27         public string Sex { get; set; }
28
29         public void Speak(string words)
30         {
31             Console.WriteLine(words);
32         }
33         private string GetMyName()
34         {
35             return Name.Trim();
36         }
37
38         public string GetMySex()
39         {
40             return Sex;
41         }
42
43         public List<string> BeenCity()
44         {
45             return new List<string>
46             {
47                 "Beijing",
48                 "Jinan",
49                 "NewYork"
50             };
51         }
52
53         public List<string> BennCity(int count)
54         {
55             return new List<string>
56             {
57                 "Beijing",
58                 "Jinan",
59                 "NewYork"
60             }.Take(count).ToList();
61         }
62     }
63 }

控台中反射获取信息代码（控台引用类库项目，也可以load dll，后面的篇幅会写）：

 1 using System;
 2 using System.Linq;
 3 using PersonMoudle;
 4
 5 namespace ReflectionTest
 6 {
 7     class Program
 8     {
 9         static void Main(string[] args)
10         {
11             var count = 0;//public count set;
12
13             var person = new Person();
14             var personType = person.GetType();
15             Console.WriteLine("类型名： " + personType.Name);
16             Console.WriteLine("类全名： " + personType.FullName);
17             Console.WriteLine("命名空间名： " + personType.Namespace);
18             Console.WriteLine("程序集名： " + personType.Assembly);
19             Console.WriteLine("模块名： " + personType.Module.Name);
20             Console.WriteLine("是否支持泛型： "+personType.IsConstructedGenericType);
21
22             //获取构造函数信息
23             var conInfo = personType.GetConstructors();
24             Console.WriteLine(personType.FullName + "共有" + conInfo.Count() + "个构造函数");
25             foreach (var constructorInfo in conInfo)
26             {
27                 count += 1;
28                 Console.WriteLine("第" + count + "个构造函数：");
29                 var paramsInfo = constructorInfo.GetParameters();
30                 Console.WriteLine(paramsInfo.Any() ? "参数列表：" : "无参数。");
31                 foreach (var parameterInfo in paramsInfo)
32                 {
33                     Console.WriteLine("第" + (parameterInfo.Position + 1) + "参数名：" + parameterInfo.Name + ", 参数类型：" +
34                                       parameterInfo.ParameterType.FullName);
35                 }
36             }
37             count = 0;
38
39             //获取事件信息
40             var eventInfo = personType.GetEvents();
41             Console.WriteLine(personType.FullName+"共有"+eventInfo.Count()+"个事件");
42
43             //获取字段信息
44             var fields = personType.GetFields();
45             Console.WriteLine(personType.FullName + " has " + fields.Count() + "fields.");
46             foreach (var fieldInfo in fields)
47             {
48                 count += 1;
49                 Console.WriteLine("The "+count+"st field is"+fieldInfo.Name+", type is "+fieldInfo.FieldType);
50             }
51             count = 0;
52
53             //获取接口信息
54             var ifaces = personType.GetInterfaces();
55             Console.WriteLine(personType.FullName + " has " + ifaces.Count() + " interfaces.");
56
57
58             //获取成员信息
59             var members = personType.GetMembers();
60             Console.WriteLine(personType.FullName+" has "+members.Count()+" members.");
61             foreach (var memberInfo in members)
62             {
63                 count += 1;
64                 Console.WriteLine("The " + count + "st member name is " + memberInfo.Name + ", type is " +
65                                   memberInfo.ReflectedType);
66             }
67             count = 0;
68
69             //获取方法信息
70             var methods = personType.GetMethods();
71             Console.WriteLine(personType.FullName+" has "+methods.Count()+" methods.");
72             foreach (var methodInfo in methods)
73             {
74                 count += 1;
75                 var paramInfos = methodInfo.GetParameters();
76                 Console.WriteLine("The " + count + "st method is " + methodInfo.Name + ", return type is " +
77                                   methodInfo.ReturnType + ", param count is " + paramInfos.Count());
78
79                 Console.WriteLine(paramInfos.Any() ? "参数列表：" : "无参数。");
80                 foreach (var parameterInfo in paramInfos)
81                 {
82                     Console.WriteLine("param name:" + parameterInfo.Name + ", param type: " +
83                                       parameterInfo.ParameterType);
84                 }
85             }
86             count = 0;
87
88             //propertites
89             var pros = personType.GetProperties();
90             Console.WriteLine(personType.FullName+" has "+pros.Count()+ "public properties.");
91
92             Console.ReadKey();
93         }
94     }
95 }

下一篇讲如何调用方法。