static void Main(string[] args)
        {
            //定义lib路径
            var libPath = Path.Combine(Environment.CurrentDirectory,"Libs");
            var files = Directory.GetFiles(libPath);
            //遍历dll文件
            var classes = new List<Type>();
            foreach (var file in files)
            {
                string fileExt = Path.GetExtension(file);
                if (fileExt != ".dll")
                    continue;
                var assemblys = Assembly.LoadFrom(file);
                //遍历dll中的class
                var types = assemblys.GetTypes();
                foreach (var type in types)
                {
                    var obj = assemblys.CreateInstance(type.FullName);
                    //遍历class中的属性
                    var props = type.GetProperties();
                    foreach (var prop in props)
                    {
                        if (prop.Name == "version")
                            prop.SetValue(obj,"V1.0",null);
                    }
                    //遍历class中的方法
                    var methods = type.GetMethods();
                    foreach (var method in methods)
                    {
                        if (method.Name == "Show")
                        {
                            Console.WriteLine("已找到目标方法\"Show()\"");
                            Console.WriteLine("dll路径为 {0}",file);
                            Console.WriteLine("类名为 {0}",type.FullName);
                            Console.WriteLine("运行结果 ");
                            method.Invoke(obj,new object[] { });
                            Console.WriteLine();
                        }
                    }
                }
            }
            Console.ReadKey();
        }