C#中获取某个日期所对应的星期数

C#中获取日期所对应的星期。下面的函数就是用来处理传递过来的日期所对应的星期几。这在C#中相对较容易些，因为C#的DateTime类中有一个属性DayOfWeek专门用来获取某个日期所对应的星期的，只要将其转换成相应的数字就可以了，具体源代码如下

        /// <summary>
        /// 获取日期对应的星期
        /// </summary>
        /// <param name="dateTime">要判定的人日期</param>
        /// <returns>返回日期所对应的星期</returns>
        public static int GetWeekIntDay(DateTime dateTime)
        {
            switch (dateTime.DayOfWeek)
            {
                case DayOfWeek.Monday: return 1;
                case DayOfWeek.Tuesday: return 2;
                case DayOfWeek.Wednesday: return 3; 
                case DayOfWeek.Thursday: return 4;
                case DayOfWeek.Friday: return 5;
                case DayOfWeek.Saturday: return 6;
                case DayOfWeek.Sunday: return 7;
                default: return 0;
            }
        }