first commit

ZR.Common/Tools.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace ZR.Common
+{
+    public class Tools
+    {
+        /// <summary>
+        /// 要分割的字符串 eg: 1,3,10,00
+        /// </summary>
+        /// <param name="infoIds"></param>
+        /// <returns></returns>
+        public static long[] SpitLongArrary(string str)
+        {
+            string[] strIds = str.Split(',', (char)StringSplitOptions.RemoveEmptyEntries);
+            long[] infoIdss = Array.ConvertAll(strIds, s => long.Parse(s));
+            return infoIdss;
+        }
+
+        public static int[] SpitIntArrary(string str)
+        {
+            string[] strIds = str.Split(',', (char)StringSplitOptions.RemoveEmptyEntries);
+            int[] infoIdss = Array.ConvertAll(strIds, s => int.Parse(s));
+            return infoIdss;
+        }
+
+        /// <summary>
+        /// 根据日期获取星期几
+        /// </summary>
+        public static string GetWeekByDate(DateTime dt)
+        {
+            var day = new[] { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
+            return day[Convert.ToInt32(dt.DayOfWeek.ToString("d"))];
+        }
+
+        /// <summary>
+        /// 得到这个月的第几周
+        /// </summary>
+        /// <param name="daytime">年月日</param>
+        /// <returns>传递过来的时间是第几周</returns>
+        public static int GetWeekNumInMonth(DateTime daytime)
+        {
+            int dayInMonth = daytime.Day;
+            //本月第一天
+            DateTime firstDay = daytime.AddDays(1 - daytime.Day);
+            //本月第一天是周几
+            int weekday = (int)firstDay.DayOfWeek == 0 ? 7 : (int)firstDay.DayOfWeek;
+            //本月第一周有几天
+            int firstWeekEndDay = 7 - (weekday - 1);
+            //当前日期和第一周之差
+            int diffday = dayInMonth - firstWeekEndDay;
+            diffday = diffday > 0 ? diffday : 1;
+            //当前是第几周,如果整除7就减一天
+            int weekNumInMonth = ((diffday % 7) == 0
+                ? (diffday / 7 - 1)
+                : (diffday / 7)) + 1 + (dayInMonth > firstWeekEndDay ? 1 : 0);
+            return weekNumInMonth;
+        }
+    }
+}