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代码
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>无标题页</title> <style type="text/css" > .hidden{ display:none;} </style> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js" type="text/javascript"></script> <script type="text/javascript"> </script> </head> <body> <form id="form1" runat="server"> <div> <% NumWeeks(new DateTime(2009, 11, 15)); %> <script runat="server" type="text/C#"> /// <summary> /// 获得本月有几周 /// </summary> /// <param name="a"></param> /// <returns></returns> public void NumWeeks(DateTime dt) { //年 int year = dt.Year; //月 int month = dt.Month; //当前月第一天 DateTime weekStart = new DateTime(year, month, 1); //该月的最后一天 DateTime monEnd = weekStart.AddMonths(1).AddDays(-1); int i = 1; //当前月第一天是星期几 int dayOfWeek = Convert.ToInt32(weekStart.DayOfWeek.ToString("d")); //该月第一周结束日期 DateTime weekEnd = dayOfWeek == 0 ? weekStart : weekStart.AddDays(7 - dayOfWeek); richTextBox2.Text += "第" + i + "周起始日期: " + weekStart.ToShortDateString() + " 结束日期: " + weekEnd.ToShortDateString() + "\n"; //当日期小于或等于该月的最后一天 while (weekEnd.AddDays(1) <= monEnd) { i++; //该周的开始时间 weekStart = weekEnd.AddDays(1); //该周结束时间 weekEnd = weekEnd.AddDays(7) > monEnd ? monEnd : weekEnd.AddDays(7); richTextBox2.Text += "第" + i + "周起始日期: " + weekStart.ToShortDateString() + " 结束日期: " + weekEnd.ToShortDateString() + "\n"; } richTextBox2.Text += year + "年" + month + "月共有" + i + "周\n"; } </script> <asp:TextBox ID="richTextBox2" runat="server" TextMode="MultiLine" Height="321px" Width="845px" ></asp:TextBox> </div> </form> </body> </html>
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