Deselect dates in ASP.NET Calendar Control
- by yomismo
I'm trying to select and de-select dates on a C# Web Calendar control.
The problem I have is that I can select or deselect dates except when there is only a single date selected.
Clicking on it does not trigger the selection changed event, so Ineed to do something on the dayrender event but I'm not sure what or how.
Edit: Added the Pre_Render event code. This seems to work now, however it seems a little bit erratic,e.g.
select date A : OK
Select date B :OK
deselect them both: OK
select date A: Does not work, need to select it twice
deselect date A : Ok
Select Date C: dates A and c are selected
@John
Yes, I am aware that the control is part of the .NET 2.0 framework and nothing to do with C# per se.
Code so far:
public static List<DateTime> list = new List<DateTime>();
protected void Calendar1_DayRender(object sender, DayRenderEventArgs e)
{
if (e.Day.IsSelected == true)
{
list.Add(e.Day.Date);
}
Session["SelectedDates"] = list;
}
protected void Calendar1_SelectionChanged(object sender, EventArgs e)
{
DateTime selection = Calendar1.SelectedDate;
if (Session["SelectedDates"] != null)
{
List<DateTime> newList = (List<DateTime>)Session["SelectedDates"];
foreach (DateTime dt in newList)
{
Calendar1.SelectedDates.Add(dt);
}
if (searchdate(selection, newList))
{
Calendar1.SelectedDates.Remove(selection);
}
list.Clear();
}
}
public bool searchdate(DateTime date, List<DateTime> dates)
{
var query = from o in dates
where o.Date == date
select o;
if (query.ToList().Count == 0)
{
return false;
}
else
{
return true;
}
}
protected void Calendar1_PreRender(object sender, EventArgs e)
{
if (Calendar1.SelectedDates.Count == 1)
{
foreach (DateTime dt in list)
{
if (searchdate(dt, list) && list.Count == 1)
{
Calendar1.SelectedDates.Clear();
break;
}
}
}
}
