/// <summary>
/// Gets the house-style description of a period from one date/time to another
/// </summary>
/// <param name="startDate">The start date.</param>
/// <param name="endDate">The end date.</param>
/// <param name="showStartTime">if set to <c>true</c> show start time.</param>
/// <param name="showEndTime">if set to <c>true</c> show end time.</param>
/// <param name="useShortDateText">if set to <c>true</c> omit day name and use short month names.</param>
/// <returns>
/// A text string which includes HTML entities
/// </returns>
public static string DateRange(DateTime startDate, DateTime endDate, bool showStartTime, bool showEndTime, bool useShortDateText)
{
bool multiDay = (startDate.DayOfYear != endDate.DayOfYear || startDate.Year != endDate.Year);
bool showTime = (showStartTime || showEndTime);
bool sameMonth = (startDate.Month == endDate.Month && startDate.Year == endDate.Year);
if (!multiDay && !showTime)
{
/*
* One day, no time
* ---------------------------------------
* Friday 26 May 2006
*/
if (useShortDateText)
{
return(ShortBritishDate(startDate));
}
return(FullBritishDateWithDay(startDate));
}
else if (!multiDay && showStartTime && !showEndTime)
{
/*
* One day, with start time
* ---------------------------------------
* 9am, Friday 26 May 2006
*/
if (useShortDateText)
{
return(ShortBritishDateWithTime(startDate));
}
return(DateTimeFormatter.FullBritishDateWithDayAndTime(startDate));
}
else if (!multiDay && showStartTime && showEndTime)
{
/*
* One day, with start and finish times
* ---------------------------------------
* 9am-2pm, Friday 26 May 2006
*/
if (useShortDateText)
{
return(new StringBuilder(DateTimeFormatter.Time(startDate)).Append(" to ").Append(DateTimeFormatter.Time(endDate)).Append(", ").Append(DateTimeFormatter.ShortBritishDate(startDate)).ToString());
}
return(new StringBuilder(DateTimeFormatter.Time(startDate)).Append(" to ").Append(DateTimeFormatter.Time(endDate)).Append(", ").Append(DateTimeFormatter.FullBritishDateWithDay(startDate)).ToString());
}
else if (multiDay && !showTime && sameMonth)
{
/*
* Different days, no times, same month
* ---------------------------------------
* 26-27 May 2006
*/
if (useShortDateText)
{
return(new StringBuilder(startDate.Day.ToString(CultureInfo.CurrentCulture)).Append(" to ").Append(DateTimeFormatter.ShortBritishDate(endDate)).ToString());
}
return(new StringBuilder(startDate.Day.ToString(CultureInfo.CurrentCulture)).Append(" to ").Append(DateTimeFormatter.FullBritishDate(endDate)).ToString());
}
else if (multiDay && !showTime && !sameMonth)
{
/*
* Different days, no times, different month
* ---------------------------------------
* Friday 26 May 2006 - Thursday 1 June 2006
*/
if (useShortDateText)
{
return(new StringBuilder(DateTimeFormatter.ShortBritishDate(startDate)).Append(" to ").Append(DateTimeFormatter.ShortBritishDate(endDate)).ToString());
}
return(new StringBuilder(DateTimeFormatter.FullBritishDateWithDay(startDate)).Append(" to ").Append(DateTimeFormatter.FullBritishDateWithDay(endDate)).ToString());
}
else if (multiDay && showStartTime && !showEndTime)
{
/*
* Different days, with start time
* ---------------------------------------
* 9am, Friday 26 May 2006 to Saturday 27 May 2006
*/
if (useShortDateText)
{
return(new StringBuilder(DateTimeFormatter.ShortBritishDateWithTime(startDate)).Append(" to ").Append(DateTimeFormatter.ShortBritishDate(endDate)).ToString());
}
return(new StringBuilder(DateTimeFormatter.FullBritishDateWithDayAndTime(startDate)).Append(" to ").Append(DateTimeFormatter.FullBritishDateWithDay(endDate)).ToString());
}
else if (multiDay && showStartTime && showEndTime)
{
/*
* Different days, with start and end time
* ---------------------------------------
* 9am, Friday 26 May 2006 to 2pm, Saturday 27 May 2006
*/
if (useShortDateText)
{
return(new StringBuilder(DateTimeFormatter.ShortBritishDateWithTime(startDate)).Append(" to ").Append(DateTimeFormatter.ShortBritishDateWithTime(endDate)).ToString());
}
return(new StringBuilder(DateTimeFormatter.FullBritishDateWithDayAndTime(startDate)).Append(" to ").Append(DateTimeFormatter.FullBritishDateWithDayAndTime(endDate)).ToString());
}
// Shouldn't get here
return(String.Empty);
}
/// <summary>
/// Gets the house-style description of a period from one date and time to another, with HTML controls which implement the hCalendar microformat
/// </summary>
/// <param name="startDate">The start date.</param>
/// <param name="endDate">The end date.</param>
/// <param name="startTimeKnown">if set to <c>true</c> the supplied start time is correct. If <c>false</c>, 00.00 is assumed.</param>
/// <param name="endTimeKnown">if set to <c>true</c> the supplied end time is correct. If <c>false</c> 00.00 the next morning is assumed.</param>
/// <param name="showStartTime">if set to <c>true</c> display the start time.</param>
/// <param name="showEndTime">if set to <c>true</c> display the end time.</param>
/// <returns>HTML controls with the date embedded</returns>
public static Control[] DateRangeHCalendar(DateTime startDate, DateTime endDate, bool startTimeKnown, bool endTimeKnown, bool showStartTime, bool showEndTime)
{
bool multiDay = (startDate.DayOfYear != endDate.DayOfYear || startDate.Year != endDate.Year);
bool showTime = (showStartTime || showEndTime);
bool sameMonth = (startDate.Month == endDate.Month && startDate.Year == endDate.Year);
// The display date may need to be different to the metadata (actual) date, so work with two copies
DateTime displayStartDate = startDate;
DateTime displayEndDate = endDate;
if (!startTimeKnown)
{
startDate = new DateTime(startDate.Year, startDate.Month, startDate.Day);
}
if (!startTimeKnown || !showStartTime)
{
displayStartDate = new DateTime(displayStartDate.Year, displayStartDate.Month, displayStartDate.Day);
}
// all-day event goes up to midnight at the start of the NEXT day
if (!endTimeKnown)
{
endDate = new DateTime(endDate.AddDays(1).Year, endDate.AddDays(1).Month, endDate.AddDays(1).Day);
}
if (!endTimeKnown || !showEndTime)
{
displayEndDate = new DateTime(displayEndDate.Year, displayEndDate.Month, displayEndDate.Day);
}
HtmlGenericControl tagStart = new HtmlGenericControl("time");
tagStart.Attributes["class"] = "dtstart"; // hCalendar
tagStart.Attributes["datetime"] = DateTimeFormatter.Iso8601DateTime(startDate); // hCalendar
HtmlGenericControl tagEnd = new HtmlGenericControl("time");
tagEnd.Attributes["class"] = "dtend"; // hCalendar
tagEnd.Attributes["datetime"] = DateTimeFormatter.Iso8601DateTime(endDate); // hCalendar
if (!multiDay && !showTime)
{
/*
* One day, no time
* ---------------------------------------
* Friday 26 May 2006
*/
Control[] hCal = new Control[1];
PlaceHolder ph = new PlaceHolder();
hCal[0] = ph;
ph.Controls.Add(tagStart);
ph.Controls.Add(tagEnd);
tagEnd.InnerText = DateTimeFormatter.FullBritishDateWithDay(displayStartDate);
return(hCal);
}
else if (!multiDay && ((showStartTime && !showEndTime) || (showStartTime && showEndTime && displayStartDate == displayEndDate)))
{
/*
* One day, with start time (or matching start and end times)
* ---------------------------------------
* 9am, Friday 26 May 2006
*/
Control[] hCal = new Control[1];
PlaceHolder ph = new PlaceHolder();
hCal[0] = ph;
ph.Controls.Add(tagStart);
ph.Controls.Add(tagEnd);
tagEnd.InnerText = DateTimeFormatter.FullBritishDateWithDayAndTime(displayStartDate);
return(hCal);
}
else if (!multiDay && showStartTime && showEndTime)
{
/*
* One day, with start and finish times
* ---------------------------------------
* 9am to 2pm, Friday 26 May 2006
*/
Control[] hCal = new Control[1];
PlaceHolder ph = new PlaceHolder();
hCal[0] = ph;
tagStart.InnerText = DateTimeFormatter.Time(displayStartDate);
ph.Controls.Add(tagStart);
ph.Controls.Add(new LiteralControl(" to "));
tagEnd.InnerText = (new StringBuilder(DateTimeFormatter.Time(displayEndDate)).Append(", ").Append(DateTimeFormatter.FullBritishDateWithDay(displayStartDate)).ToString());
ph.Controls.Add(tagEnd);
return(hCal);
}
else if (multiDay && !showTime && sameMonth)
{
/*
* Different days, no times, same month
* ---------------------------------------
* 26 to 27 May 2006
*/
Control[] hCal = new Control[1];
PlaceHolder ph = new PlaceHolder();
hCal[0] = ph;
tagStart.InnerText = displayStartDate.Day.ToString(CultureInfo.CurrentCulture);
ph.Controls.Add(tagStart);
ph.Controls.Add(new LiteralControl(" to "));
tagEnd.InnerText = DateTimeFormatter.FullBritishDate(displayEndDate);
ph.Controls.Add(tagEnd);
return(hCal);
}
else if (multiDay && !showTime && !sameMonth)
{
/*
* Different days, no times, different month
* ---------------------------------------
* Friday 26 May 2006 to Thursday 1 June 2006
*/
Control[] hCal = new Control[1];
PlaceHolder ph = new PlaceHolder();
hCal[0] = ph;
tagStart.InnerText = DateTimeFormatter.FullBritishDateWithDay(displayStartDate);
ph.Controls.Add(tagStart);
// Previous version using hyphen (for reference): ph.Controls.Add(new LiteralControl(" – "));
ph.Controls.Add(new LiteralControl(" to "));
tagEnd.InnerText = DateTimeFormatter.FullBritishDateWithDay(displayEndDate);
ph.Controls.Add(tagEnd);
return(hCal);
}
else if (multiDay && showStartTime && !showEndTime)
{
/*
* Different days, with start time
* ---------------------------------------
* Start: 9am, Friday 26 May 2006
* Finish: Saturday 27 May 2006
*/
Control[] hCal = new Control[2];
hCal[0] = tagStart;
hCal[1] = tagEnd;
tagStart.InnerText = DateTimeFormatter.FullBritishDateWithDayAndTime(displayStartDate);
tagEnd.InnerText = DateTimeFormatter.FullBritishDateWithDay(displayEndDate);
return(hCal);
}
else if (multiDay && showStartTime && showEndTime)
{
/*
* Different days, with start and end time
* ---------------------------------------
* Start: 9am, Friday 26 May 2006
* Finish: 2pm, Saturday 27 May 2006
*/
Control[] hCal = new Control[2];
hCal[0] = tagStart;
hCal[1] = tagEnd;
tagStart.InnerText = DateTimeFormatter.FullBritishDateWithDayAndTime(displayStartDate);
tagEnd.InnerText = DateTimeFormatter.FullBritishDateWithDayAndTime(displayEndDate);
return(hCal);
}
// Shouldn't get here
return(new Control[0]);
}
/// <summary>
/// Takes a string as a date and returns a string in full british format with date and time
/// </summary>
/// <param name="date"></param>
/// <returns></returns>
public static string FullBritishDateWithDayAndTimeString(string date)
{
return(DateTimeFormatter.FullBritishDateWithDayAndTime(DateTime.Parse(date, CultureInfo.CurrentCulture)));
}