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