一、開發環境

操作系統：Win7

編譯器：VS2010

.net版本：.net4.0

二、項目結構

三、開發流程

0.編寫實體類

namespace ReflectDemo
{
    public class Bird
    {
        public string _id;

        public string Name { get; set; }

        public int Age { get; set; }

        public void Eat()
        {
            Console.WriteLine("我是個吃貨");
        }

        public void Eat(string birdName)
        {
            Console.WriteLine("我和" + birdName + "都是個吃貨");
        }

        public Bird()
        {

        }

        public Bird(string name, int age)
        {
            this.Name = name;
            this.Age = age;
        }

        public void BirdIntroducion()
        {
            Console.WriteLine("我叫" + Name + ",我" + Age + "歲了");
        }
    }
}

1.獲取Assembly對象

namespace ReflectDemo
{
    public class GetAssembly
    {
        public void MethodGetAllAssembly()
        {
            //獲取當前應用程式域中的Assembly
            Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
            Console.WriteLine(assemblies.ToString());
        }

        public void MethodGetCurrentObjAssembly()
        {
            //獲取當前對象所在的Assembly
            Assembly assembly = this.GetType().Assembly;
            Console.WriteLine(assembly.ToString());
        }

        public void MethodGetFromBin()
        {
            //獲取bin目錄下的指定Assembly
            Assembly assembly = Assembly.LoadFrom("ReflectDemo.exe");
            Console.WriteLine(assembly.ToString());
        }
    }
}

2.獲取Type對象

namespace ReflectDemo
{
    public class GetType
    {
        public void MethodGetByClassName()
        {
            //通過類名獲得Type
            Type type = typeof(Bird);
            Console.WriteLine(type.ToString());
        }

        public void MethodGetByObjName()
        {
            //通過對象名獲得Type
            Bird bird = new Bird();
            Type type = bird.GetType();
            Console.WriteLine(type.ToString());
        }

        public void MethodGetByFullName()
        {
            //通過 命名空間.類名獲取
            Assembly assembly = this.GetType().Assembly;
            Type type = assembly.GetType("ReflectDemo.Bird");
        }

        public void MethodGetAll()
        {
            //獲取Assembly中所有的類型
            Assembly assembly = this.GetType().Assembly;
            Type[] types = assembly.GetTypes();
        }

        public void MethodGetAllPublic()
        {
            //獲取Assembly中定義的所有public類
            Assembly assembly = this.GetType().Assembly;
            Type[] types = assembly.GetExportedTypes();
        }
    }
}

3.獲取Type成員對象

3.1獲取欄位信息

namespace ReflectDemo
{
    public class GetFieldInfo
    {
        public void MethodGetPublicField()
        {
            Bird bird = new Bird()
            {
                _id = "1"
            };
            Type type = bird.GetType();
            FieldInfo idInfo = type.GetField("_id");
            string id = idInfo.GetValue(bird).ToString();
            Console.WriteLine(id);
            idInfo.SetValue(bird, "2");
            string newId = bird._id;
            Console.WriteLine(newId);
        }
    }
}

3.2獲取屬性信息

namespace ReflectDemo
{
    public class GetPropertyInfo
    {
        public void MethodGetAllPublic()
        {
            Bird bird = new Bird()
            {
                Name = "小黃"
            };
            Type type = bird.GetType();
            PropertyInfo nameInfo = type.GetProperty("Name");
            string name = nameInfo.GetValue(bird, null).ToString();
            Console.WriteLine(name);
            nameInfo.SetValue(bird, "小黃黃", null);
            Console.WriteLine(bird.Name);
        }
    }
}

3.3獲取方法信息

namespace ReflectDemo
{
    public class GetMethodInfo
    {
        public void MethodGetWithNoParas()
        {
            Bird bird = new Bird();
            Type type = bird.GetType();
            MethodInfo eatMethodInfo = type.GetMethod("Eat", new Type[] { });
            eatMethodInfo.Invoke(bird, null);
        }

        public void MethodWithParas()
        {
            Bird bird = new Bird();
            Type type = bird.GetType();
            MethodInfo eatMethodInfo = type.GetMethod("Eat", new Type[] { typeof(string) });
            eatMethodInfo.Invoke(bird, new object[] { "小黑" });
        }
    }
}

3.4獲取構造函數

namespace ReflectDemo
{
    public class GetConstructorInfo
    {
        public void MethodGetActivator()
        {
            Type type = typeof(Bird);
            Bird bird = Activator.CreateInstance(type, new object[] { "小白", 3 }) as Bird;
            bird.BirdIntroducion();
        }

        public void MethodGetConstructor()
        {
            Type type = typeof(Bird);
            ConstructorInfo ctor = type.GetConstructor(new Type[] { typeof(string), typeof(int) });
            Bird bird = ctor.Invoke(new object[] { "小黑", 5 }) as Bird;
            bird.BirdIntroducion();
        }
    }
}

4.編寫控制台程式

namespace ReflectDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("---獲取Assembly---");
            GetAssembly getAssembly = new GetAssembly();
            getAssembly.MethodGetAllAssembly();
            getAssembly.MethodGetCurrentObjAssembly();
            getAssembly.MethodGetFromBin();

            Console.WriteLine("\n---獲取Type對象---");
            GetType getType = new GetType();
            getType.MethodGetByClassName();
            getType.MethodGetByObjName();
            getType.MethodGetByFullName();
            getType.MethodGetAll();
            getType.MethodGetAllPublic();


            Console.WriteLine("\n---獲取欄位信息---");
            GetFieldInfo getFieldInfo = new GetFieldInfo();
            getFieldInfo.MethodGetPublicField();

            Console.WriteLine("\n---獲取屬性信息---");
            GetPropertyInfo getPropertyInfo = new GetPropertyInfo();
            getPropertyInfo.MethodGetAllPublic();

            Console.WriteLine("\n---獲取方法信息---");
            GetMethodInfo getMethodInfo = new GetMethodInfo();
            getMethodInfo.MethodGetWithNoParas();
            getMethodInfo.MethodWithParas();

            Console.WriteLine("\n---獲取構造函數信息---");
            GetConstructorInfo getConstructorInfo = new GetConstructorInfo();
            getConstructorInfo.MethodGetActivator();
            getConstructorInfo.MethodGetConstructor();

            Console.ReadKey();
        }
    }
}

四、項目說明

1.什麼是反射：

(1).在程式運行時，
動態 獲取 載入程式集
動態 獲取 類型（類，介面）
動態 獲取 類型的成員 信息（欄位，屬性，方法）
(2).在運行時，
動態 創建類型實例，以及 調用 和訪問 這些 實例 成員

程式集（Assembly對象）===》類，介面（Type對象）===》類的成員（**Info）

五、其他信息