c#简单判断是否是闰年的方法代码

复制代码 代码如下:
///

        /// 判断是否闰年？
        ///

        ///
        ///
        public static bool IsLeapYear(int a_year)
        {
            String s;
            DateTime dt;
            try
            {
                s = (a_year.ToString() + "-02-29");
                dt = Convert.ToDateTime(s);
                return true;
            }
            catch
            {
                return false;
            }
        }