C#反射使用

using System.Reflection;

namespace TestReflection
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("TestReflection");
            Console.WriteLine("****************************************");
            Console.WriteLine("****************************************");

            #region dll加载与反射
            //加载dll获取程序集
            Assembly dllAssembly = Assembly.LoadFrom("IndustryLib.dll");

            //获取程序集中所有类型
            Type[] dlltypes = dllAssembly.GetTypes();
            foreach (Type type in dlltypes) { Console.WriteLine(type.Namespace + "." + type.Name); }
            Console.WriteLine("****************************************");

            //实例化指定类型
            Type classType = dllAssembly.GetType("IndustryLib.DataConvert.DataConvert");
            object classObj = Activator.CreateInstance(classType);
            Console.WriteLine("****************************************");

            //获取类中所有方法及参数
            MethodInfo[] methods = classType.GetMethods();
            foreach (MethodInfo method in methods) { method.GetParameters().ToArray().ToList().ForEach(p => Console.WriteLine(method.Name + ":" + p.Name + "," + p.ParameterType.Name + ",")); }
            Console.WriteLine("****************************************");

            //调用方法
            MethodInfo methodInfo = classType.GetMethod("StringToIntArray");
            object result = methodInfo.Invoke(classObj, new object[] { "12345" });
            foreach (int i in result as int[]) { Console.Write(i.ToString("x") + " "); }
            Console.WriteLine();
            Console.WriteLine("****************************************");
            Console.WriteLine("****************************************");
            #endregion

            #region 类加载反射
            TestReflectionClass testCase = new TestReflectionClass() { publicUnStatic = 5 };
            TestReflectionClass.publicStatic = 10;

            //获得指定类型所在程序集
            Assembly testClassAssembly = Assembly.GetAssembly(typeof(TestReflection.TestReflectionClass));

            //获取测试类型
            Type testClass = testClassAssembly.GetType("TestReflection.TestReflectionClass");


            //获取所有public字段
            FieldInfo[] publicFields = testClass.GetFields();
            foreach (FieldInfo field in publicFields) { Console.WriteLine(field.Name); }
            Console.WriteLine("****************************************");

            //获取所有private非static字段
            FieldInfo[] privateFields = testClass.GetFields(BindingFlags.NonPublic | BindingFlags.Instance);
            foreach (FieldInfo field in privateFields) { Console.WriteLine(field.Name); }
            Console.WriteLine("****************************************");

            //获取所有private static字段
            FieldInfo[] privateStaticFields = testClass.GetFields(BindingFlags.NonPublic | BindingFlags.Static);
            foreach (FieldInfo field in privateStaticFields) { Console.WriteLine(field.Name); }
            Console.WriteLine("****************************************");

            //获取public非static字段
            FieldInfo publicUnstaticField = testClass.GetField("publicUnStatic");
            Console.WriteLine("publicUnstaticField value:" + publicUnstaticField.GetValue(testCase));
            Console.WriteLine("****************************************");

            //获取public static字段
            FieldInfo publicStaticField = testClass.GetField("publicStatic");
            Console.WriteLine("publicStaticField ByInstance value:" + publicStaticField.GetValue(testCase));
            Console.WriteLine("publicStaticField ByClass value:" + publicStaticField.GetValue(null));
            Console.WriteLine("****************************************");

            //获取private非static字段
            FieldInfo privateUnstaticField = testClass.GetField("privateUnStatic", BindingFlags.Instance | BindingFlags.NonPublic);
            Console.WriteLine("privateUnstaticField value:" + privateUnstaticField.GetValue(testCase));
            Console.WriteLine("****************************************");

            //获取private static字段
            FieldInfo privateStaticField = testClass.GetField("privateStatic", BindingFlags.Static | BindingFlags.NonPublic);
            Console.WriteLine("privateStaticField ByInstance value:" + privateStaticField.GetValue(testCase));
            Console.WriteLine("privateStaticField ByClass value:" + privateStaticField.GetValue(null));
            privateStaticField.SetValue(null, 100);
            Console.WriteLine("privateStaticField after Set:" + privateStaticField.GetValue(null));
            Console.WriteLine("****************************************");
            Console.WriteLine("****************************************");


            //获取所有属性
            PropertyInfo[] properties = testClass.GetProperties();
            foreach (PropertyInfo property in properties) { Console.WriteLine(property.Name); }
            Console.WriteLine("property value:" + testClass.GetProperty("PublicProperty").GetValue(testCase));
            testClass.GetProperty("PublicProperty").SetValue(testCase, 100);
            Console.WriteLine("property value:" + testClass.GetProperty("PublicProperty").GetValue(testCase));
            Console.WriteLine("****************************************");
            Console.WriteLine("****************************************");

            //获取所有public方法
            MethodInfo[] publicMethods = testClass.GetMethods();
            foreach (MethodInfo method in publicMethods) { Console.WriteLine(method.Name); }
            Console.WriteLine("****************************************");

            //获取所有private方法
            MethodInfo[] privateMethods = testClass.GetMethods(BindingFlags.NonPublic | BindingFlags.Instance);
            foreach (MethodInfo method in privateMethods) { Console.WriteLine(method.Name); }
            Console.WriteLine("****************************************");

            //反射调用公共普通方法
            MethodInfo testFunc1 = testClass.GetMethod("TestFunc");
            testFunc1.Invoke(testCase, null);
            Console.WriteLine("****************************************");

            //反射调用公共带参方法
            MethodInfo testFunc2 = testClass.GetMethod("TestFuncWithParam");
            Console.WriteLine(testFunc2.Invoke(testCase, new object[] { "Hello" }));
            Console.WriteLine("****************************************");

            //反射调用私有普通方法
            MethodInfo testFuncp1 = testClass.GetMethod("PTestFunc", BindingFlags.NonPublic | BindingFlags.Instance);
            testFuncp1.Invoke(testCase, null);
            Console.WriteLine("****************************************");

            //反射调用私有带参方法
            MethodInfo testFuncp2 = testClass.GetMethod("PTestFuncWithParam", BindingFlags.NonPublic | BindingFlags.Instance);
            Console.WriteLine(testFuncp2.Invoke(testCase, new object[] { "Hello" }));
            Console.WriteLine("****************************************");
            #endregion

            Console.WriteLine();
            Console.ReadKey();
        }
    }

    public class TestReflectionClass
    {
        /// <summary>
        /// 私有字段
        /// </summary>
        private int privateUnStatic;
        /// <summary>
        /// 私有静态字段
        /// </summary>
        private static int privateStatic;

        /// <summary>
        /// 公共字段
        /// </summary>
        public int publicUnStatic;
        /// <summary>
        /// 公共静态字段
        /// </summary>
        public static int publicStatic;

        /// <summary>
        /// 公共属性
        /// </summary>
        public int PublicProperty
        {
            set
            {
                privateUnStatic = value;
                Console.WriteLine("PublicProperty Set 已执行");
            }
            get
            {
                Console.WriteLine("PublicProperty Get 已执行");
                return privateUnStatic;
            }
        }

        /// <summary>
        /// 公共无参方法
        /// </summary>
        public void TestFunc()
        {
            Console.WriteLine("公共无参方法已执行");
        }

        /// <summary>
        /// 公共有参方法
        /// </summary>
        public int TestFuncWithParam(string msg) { Console.WriteLine("公共有参方法已执行:" + msg); return 4; }

        /// <summary>
        /// 私有无参方法
        /// </summary>
        private void PTestFunc()
        {
            Console.WriteLine("私有无参方法已执行");
        }

        /// <summary>
        /// 私有有参方法
        /// </summary>
        private int PTestFuncWithParam(string msg) { Console.WriteLine("私有有参方法已执行:" + msg); return 14; }
    }
}