1. change the day that the week started on based on a stored text value
2. select all days from the current week from today's date back to and including the starting day of the week (whatever that was configured to)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebCalendar

{
public partial class _Default
: System.Web.UI.Page

{
protectedvoid Page_Load(object sender,
EventArgs e)

{

_cal.SelectionMode = CalendarSelectionMode.DayWeek;

//
setup today's date values

DateTime dtCurrent = DateTime.Now;

DayOfWeek dowCurrent = dtCurrent.DayOfWeek;

//
setup day to start week
string strDayToStartWeek ="Thursday"; //
test text value - TODO: from database

DayOfWeek dowDayToStartWeek = (DayOfWeek)Enum.Parse(typeof(DayOfWeek),
strDayToStartWeek);

FirstDayOfWeek configLeadingDOW = (FirstDayOfWeek)Enum.Parse(typeof(FirstDayOfWeek),
strDayToStartWeek);

//
set calendar to start week on stored preference

_cal.FirstDayOfWeek = configLeadingDOW;

//
select the dates

SelectDatesForWeeklyReport(dtCurrent, dowDayToStartWeek);

}

///
<summary>
///
Select all the days from today back to the day which is nominated as the beginning
of the week
///
</summary>
///
<param name="dtCurrent">Today's date</param>
///
<param name="dowDayToStartWeek">Day which is nominated as the beginning of the
week</param>
privatevoid SelectDatesForWeeklyReport(DateTime
dtCurrent, DayOfWeek dowDayToStartWeek)

{

DateTime dtSelectedDate = dtCurrent;

bool exitLoop =true;

while (exitLoop)

{
if (dtSelectedDate.DayOfWeek
== dowDayToStartWeek)

{
//
select the start of the week

_cal.SelectedDates.Add(dtSelectedDate);

exitLoop =false;

}
else

{

_cal.SelectedDates.Add(dtSelectedDate);

}

dtSelectedDate = dtSelectedDate.AddDays(-1);

}

}

}

}