Question

asp.net中日期算法

如何把2008-05-01到2008-09-30这段时间内的所有的星期二和星期四的日期全都取出来放到一个集合里
请给我一段参考代码

Answer 1

后台 Default.aspx.cs 代码:

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

public partial class _Default : System.Web.UI.Page
{
int mondayCount, tuesdayCount, wednesdayCount, thursdayCount, fridayCount, satursdayCount, sundayCount;//每个星期日(星期一,星期二...)的总天数
protected void Page_Load(object sender, EventArgs e)
{

}
protected void btnSubmit_Click(object sender, EventArgs e)
{
getDate(this.txtStartDay.Text.Trim(), this.txtEndDay.Text.Trim());
}

private void getDate(string startDate, string endDate)
{
this.lbl246.Text = "";
this.lbl135.Text = "";
this.lblMonday.Text = "";
this.lblTuesday.Text = "";
this.lblWednesday.Text = "";
this.lblThursday.Text = "";
this.lblFriday.Text = "";
this.lblSaturday.Text = "";
this.lblSunday.Text = "";

DateTime startDT = Convert.ToDateTime(startDate); //开始时间
DateTime endDT = Convert.ToDateTime(endDate); //结束时间
TimeSpan dt = endDT - startDT;
int dayCount=dt.Days; //总天数
this.lblDayCount.Text = dayCount.ToString();//总天数
for (int i = 0; i < dayCount; i++)
{
switch (startDT.AddDays(i).DayOfWeek)
{
case DayOfWeek.Monday:
mondayCount += 1;
this.lblMonday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
break;
case DayOfWeek.Tuesday:
this.lblTuesday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
tuesdayCount += 1;
break;
case DayOfWeek.Wednesday:
wednesdayCount += 1;
this.lblWednesday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
break;
case DayOfWeek.Thursday:
thursdayCount += 1;
this.lblThursday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
break;
case DayOfWeek.Friday:
fridayCount += 1;
this.lblFriday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
break;
case DayOfWeek.Saturday:
satursdayCount += 1;
this.lblSaturday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
break;
case DayOfWeek.Sunday:
sundayCount += 1;
this.lblSunday.Text += startDT.AddDays(i).ToLongDateString() + " �0�7 �0�7";
break;
}
}
this.lblMonday.Text += "星期一总天数为:" + mondayCount.ToString();
this.lblTuesday.Text += "星期二总天数为:" + tuesdayCount.ToString();
this.lblWednesday.Text += "星期三总天数为:" + wednesdayCount.ToString();
this.lblThursday.Text += "星期四总天数为:" + thursdayCount.ToString();
this.lblFriday.Text += "星期五总天数为:" + fridayCount.ToString();
this.lblSaturday.Text += "星期六总天数为:" + satursdayCount.ToString();
this.lblSunday.Text += "星期日总天数为:" + sundayCount.ToString();

this.lbl135.Text = (mondayCount + wednesdayCount + fridayCount).ToString();//星期1.3.5总天数
this.lbl246.Text = (tuesdayCount + thursdayCount + satursdayCount + sundayCount).ToString();
}
}

希望对你有点帮助

Answer 2

两个字段的数据类型不一样，
乖之前转成一样的数据类型。要不乖之后转。