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 }

View Code

 

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。