根据当前时间获取本周 下周 上周日期

实现点击按钮更改周，并获取本周，上周，下周对应的具体日期

借鉴了一些网上的方法

/// <summary>/// 定义/// </summary>DateTime beginDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Monday, 0);//默认开始时间为本周周一DateTime endDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Sunday, 1); //默认结束时间为本周周日，因为周日为每周第一天，所以本周周日为下周第一天 /// <param name="dt">指定日期</param>/// <param name="weekday">需要获取周几</param>/// <param name="Number">控制获取哪周（-1：上周； 0：本周； 1：下周； 2：下下周）</param>private static DateTime getWeekUpOfDate(DateTime dt, DayOfWeek weekday, int Number){int wd1 = (int)weekday;int wd2 = (int)dt.DayOfWeek;return wd2 == wd1 ? dt.AddDays(7 * Number) : dt.AddDays(7 * Number - wd2 + wd1);//周日为每周第一天}

1 #region 更改周 按钮事件 2 /// <summary> 3 /// 本周 4 /// </summary> 5 private void btnThisWeek_Click(object sender, EventArgs e) 6 { 7 beginDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Monday, 0);//本周周一 8 endDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Sunday, 1); //下周周日 9 DateBind();10 11 }12 13 /// <summary>14 /// 上周15 /// </summary>16 private void btnLastWeek_Click(object sender, EventArgs e)17 {18 beginDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Monday, -1);//上周周一19 endDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Sunday, 0); //本周周日20 DateBind();21 22 }23 24 /// <summary>25 /// 下周26 /// </summary>27 private void btnNextWeek_Click(object sender, EventArgs e)28 {29 beginDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Monday, 1);//下周周一30 endDate = getWeekUpOfDate(DateTime.Now, DayOfWeek.Sunday, 2); //下下周周日31 DateBind();

32 33 }34 #endregion

1 /// <summary> 2 /// 绑定每天对应的日期 3 /// </summary> 4 private void DateBind() 5 { 6 DateTime beginTime = beginDate; 7 DateTime endTime = endDate; 8 DateTime[] times = GetDateTime(beginTime, endTime);//查出星期一到星期日的日期 9 if (times.Length > 0)10 {11 TextBox1.Text= times[0].ToShortDateString(); //星期一的日期12 TextBox2.Text = times[1].ToShortDateString(); //星期二的日期13 TextBox3.Text = times[2].ToShortDateString(); //星期三的日期14 TextBox4.Text = times[3].ToShortDateString(); //星期四的日期15 TextBox5.Text = times[4].ToShortDateString(); //星期五的日期16 TextBox6.Text = times[5].ToShortDateString(); //星期六的日期17 TextBox7.Text = times[6].ToShortDateString(); //星期日的日期18 }19 20 }

1 /// <summary> 2 /// 计算每周每天对应的日期 3 /// </summary> 4 private DateTime[] GetDateTime(DateTime beginTime, DateTime endTime) 5 { 6 List<DateTime> timeList = new List<DateTime>(); 7 for (; beginTime <= endTime; beginTime = beginTime.AddDays(1))//周一到周日的日期 8 { 9 timeList.Add(beginTime);10 11 }12 DateTime[] times = timeList.ToArray();13 return times;14 }