判断输入字符串是否等效Int32位数字的两种方法

Code1
            for (int i = 0; i < 10; )
            {
                string str = Console.ReadLine();
                int num;
                if (int.TryParse(str, out num) == false)
                {
                    Console.WriteLine("输入的不是数字，请重新输入！");

                }
                else
                {
                    {
                        if (num % 2 == 0)
                        {
                            Console.WriteLine("偶数");
                        }
                        else
                        {
                            Console.WriteLine("奇数");
                        }
                    }
                }
                i++;
            }

Code2

        int temp=0;
            while (temp == 0)
            {
                string input = Console.ReadLine();
                try
                {
                    int num = int.Parse(input);
                    temp++;
                }

                catch
                {
                    Console.WriteLine("您输入的不是数字，请重新输入！");
                    temp = 0;
                }
            }