I use SPCalendarView control as part of my UserControl in WebPart. Does anybody have problem switching between days/weeks in daily/weekly view in SPCalendarView control? There are no problem with switching months (when I'm inheriting System.Web.UI.WebControls.WebParts.WebPart and set EnableV4Rendering to false; when I inherited Microsoft.Sharepoint.WebPartPages.WebPart and set EnableV4Rendering to true I was unable even to switch between months), but when user tries to switch days nothing happens (well, happens post-back and view for same day/week is been loaded). How did you resolve this problem? Sorry for my English.