public static HistoryEntity Previous()
{
var cur_entity = cur_index >= 1 ? HistoryList.ElementAt(cur_index - 1) : null;
if (cur_entity != null)
{
cur_index -= 1;
}
return(cur_entity);
}
public static HistoryEntity Next()
{
var cur_entity = cur_index < HistoryList.Count - 1 ? HistoryList.ElementAt(cur_index + 1) : null;
if (cur_entity != null)
{
cur_index += 1;
}
return(cur_entity);
}
public HistoryViewModel()
{
using (var context = new EventDatabaseEntities())
{
int CurrentIndex = 0;
// Get every date when was an event.
var dates = context.Events.Where(x => DbFunctions.TruncateTime(x.Date) < DateTime.Today)
.GroupBy(r => DbFunctions.TruncateTime(r.Date)).OrderByDescending(x => x.Key).ToList();
// Set the date indicators.
ToDate = dates.ElementAt(0).Key.ToString();
FromDate = dates.ElementAt(dates.Count() - 1).Key.ToString();
foreach (var events in dates)
{
// Every event that happend at this day.
var Events = context.Events.Where(x => DbFunctions.TruncateTime(x.Date) == events.Key).ToList();
// Add the date to the list.
HistoryList.Add(new HistoryModel()
{
EventDate = (DateTime)events.Key
});
// Get the tasks for the events if there any.
foreach (var task in Events)
{
var tasks = context.Tasks.Where(x => x.EventID == task.ID).ToList();
HistoryList.ElementAt(CurrentIndex).EventList.Add(new HistoryListModel(task, tasks));
}
CurrentIndex++;
}
}
DateFilterCommand = new RelayCommand(DateFilterEvent);
DeleteEventCommand = new RelayParamCommand <Event>(DeleteEvent);
CloseEventCommand = new RelayCommand(CloseEvent);
}
