SPCalendarView control, same events are displayed each month in a VisualWebPart UserControl.ascx.cs file

Question

I am creating a custom SharePoint Calendar to pull from multiple SharePoint Calendar Lists.

In the markup I have the following:

<SharePoint:SPCalendarView ID="EventsCalendar2" width="100%" runat="server"></SharePoint:SPCalendarView>

I bind it like this in page load after getting the site and list myItems is a SPListItemCollection:

EventsCalendar2.DataSource = MakeSchedule(myItems);
EventsCalendar2.DataBind(); 

The MakeSchedule(myItems) is the following:

private SPCalendarItemCollection MakeSchedule(SPListItemCollection myItems)
        {
            SPCalendarItemCollection items = new SPCalendarItemCollection(); 

            for (int i = 0; i < myItems.Count; i++)
            {
                SPListItem item = myItems[i];

                DateTime StartTime = Convert.ToDateTime(item["EventDate"]);
                DateTime EndTime = Convert.ToDateTime(item["EndDate"]);

                string Description = "";
                if (item["Description"] != null)
                    Description = item["Description"].ToString();

                string Location = "";
                if (item["Location"] != null)
                    Location = item["Location"].ToString(); 

                bool Recurrance = false;
                if (item["fRecurrence"] != null)
                    Recurrance = (bool)item["fRecurrence"];

                bool AllDayEvent = false;
                if (item["fAllDayEvent"] != null)
                    AllDayEvent = (bool)item["fAllDayEvent"];



                items.Add(
                    new SPCalendarItem()
                    {
                        ItemID = item["ID"].ToString(),
                        StartDate = StartTime,
                        EndDate = EndTime,
                        hasEndDate = true,
                        Title = item["Title"].ToString(),
                        Location = Location,
                        Description = Description,
                        IsAllDayEvent = AllDayEvent,
                        IsRecurrence = Recurrance,
                        CalendarType = (int)SPCalendarType.Gregorian
                    }


                    );
            }

            return items; 
        }

NOW I can't figure out why the events are being displayed in all of the months when they should only be displayed in the months specified by StartDate & EndDate. Any ideas on what I am doing wrong??

Could it be that the SPCalendarView control cannot be used in a VisualWebPart?

Answer 1

had to set the SPCalendarView's V4Rendering property to false to get it working (EnableV4Rendering="false"). Of course this isn't the best solution as this removes some functionality added onto the Calendar from SharePoint 2007.

Other things I have come across in my research was that this is definitely a VisualWebPart issue in particular the UserControl. I will edit this answer with the link.

A solution offered by others is updating the SharePoint server with the December2011 cumulative update. I will try that tomorrow, but for now that is the temporary solution.

http://www.sharepointdevelopment.me/2012/03/harnessing-the-spcalendarview/

&& Yes the HotFix I applied fixed it, here is the link: http://support.microsoft.com/kb/2596998

Answer 2

for starters, you are calculating start and end dates differently

  DateTime StartTime = Convert.ToDateTime(item["EventDate"]);
  DateTime EndTime   = Convert.ToDateTime(item["EndDate"]  ).Date;

You should also use Convert.ToBoolean() rather than casting it as x = (bool) object. I've seen the latter fail in strange ways and if that happens to be the case here, then you could be ending up with Recurrance being true when it shouldn't be.