/// <summary>
2 /// 基姆拉尔森计算公式计算日期
3 /// </summary>
4 /// <param name="y">年</param>
5 /// <param name="m">月</param>
6 /// <param name="d">日</param>
7 /// <returns>星期几</returns>
8
9 protected string CaculateWeekDay(int y, int m, int d)
10 {
11 if (m == 1 || m == 2)
12 {
13 m += 12;
14 y--; //把一月和二月看成是上一年的十三月和十四月,例:如果是2004-1-10则换算成:2003-13-10来代入公式计算。
15 }
16 int week = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7;
17 string weekstr = "";
18 switch (week)
19 {
20 case 0: weekstr = "星期一"; break;
21 case 1: weekstr = "星期二"; break;
22 case 2: weekstr = "星期三"; break;
23 case 3: weekstr = "星期四"; break;
24 case 4: weekstr = "星期五"; break;
25 case 5: weekstr = "星期六"; break;
26 case 6: weekstr = "星期日"; break;
27 }
28 return weekstr;
29 }
2 /// 基姆拉尔森计算公式计算日期
3 /// </summary>
4 /// <param name="y">年</param>
5 /// <param name="m">月</param>
6 /// <param name="d">日</param>
7 /// <returns>星期几</returns>
8
9 protected string CaculateWeekDay(int y, int m, int d)
10 {
11 if (m == 1 || m == 2)
12 {
13 m += 12;
14 y--; //把一月和二月看成是上一年的十三月和十四月,例:如果是2004-1-10则换算成:2003-13-10来代入公式计算。
15 }
16 int week = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7;
17 string weekstr = "";
18 switch (week)
19 {
20 case 0: weekstr = "星期一"; break;
21 case 1: weekstr = "星期二"; break;
22 case 2: weekstr = "星期三"; break;
23 case 3: weekstr = "星期四"; break;
24 case 4: weekstr = "星期五"; break;
25 case 5: weekstr = "星期六"; break;
26 case 6: weekstr = "星期日"; break;
27 }
28 return weekstr;
29 }