Hi Everyone,

We are using the XamDayView (in XamOutlookCalendarView) (version 11.1). When I have multiple ResourceCalendars (Infragistics.Controls.Schedules.ResourceCalendar), and one of the ResourceCalendars has NO activities, tabbing to this calendar will freeze the whole application. When debugging it looks like we are stuck in a infinite loop inside the code below. It looks like the next group never ends up null. 

We can easily reproduce this with a simple test app. I can attach it if requested.

InfragisticsWPF4.Controls.Schedules.v11.1.dll!Infragistics.Controls.Schedules.ScheduleControlBase.NavigateActivities

                           // if we didn't find it in the source panel then work forward/back from that panel

                           if (null == activityToSelect && foundActivity)

                           {

                                  do

                                  {

                                        int adjustment = next ? 1 : -1;

                                        startingPanelIndex += adjustment;

                                        int end = next ? panels.Count : -1;

                                        for ( int i = startingPanelIndex; i != end; i += adjustment )

                                        {

                                               var item = panels[i];

                                               activityToSelect = item.Item1.GetNextActivity(activity, next, item.Item2, out foundActivity);

                                               if ( null != activityToSelect )

                                               {

                                                      containingPanel = item.Item1;

                                                      break;

                                               }

                                        }

                                        if ( null != activityToSelect )

                                               break;

                                        // move to the next group

                                        startingGroup = this.GetNextPreviousGroup(startingGroup, next);

                                        panels = this.GetActivityNavigationList(startingGroup);

                                        startingPanelIndex = next ? -1 : panels.Count;

                                  } while ( startingGroup != null );

                           }