C#根据日期计算星期几的实例代码

$.get('CaculateWeekDay', { y: 2016, m: 8, d: 9 }, function (result) {alert(result);})

/// <summary>/// 计算具体某个日期是星期几/// </summary>/// <param name="y">年</param>/// <param name="m">月</param>/// <param name="d">日</param>/// <returns></returns>public string CaculateWeekDay(int y, int m, int d) {if (m == 1 || m == 2) {m += 12;y--;}int week = (d + 2 * m + 3 * (m + 1) / 5 + y + y / 4 - y / 100 + y / 400) % 7;string weekstr = "";switch (week){case 0: weekstr = "星期一"; break;case 1: weekstr = "星期二"; break;case 2: weekstr = "星期三"; break;case 3: weekstr = "星期四"; break;case 4: weekstr = "星期五"; break;case 5: weekstr = "星期六"; break;case 6: weekstr = "星期七"; break;}return weekstr;}