//Assembly.Load("namespace").GetType("namespace.class名稱");
            var t = Assembly.Load("Model").GetType("Model.AreaC");
            MethodInfo[] info = t.GetMethods(BindingFlags.DeclaredOnly | BindingFlags.Public | BindingFlags.Instance | BindingFlags.Static);

            foreach (var item in info)
            {
                
 
//方法名
                var methodName = item.Name;
                //獲取方法對應的引數
                var parameters = item.GetParameters();
                //返回型別
                var returnType=item.ReturnType.FullName;

            }

需要名稱空間：using System.Reflection