//clear the current list of items and load the new items through GetItemsAsync
//this is executed when the user refreshes the list
async Task ExecuteLoadItemsCommand()
{
//the code will run only when IsBusy is false
if (IsBusy)
{
return;
}
//make is busy ture so that the user can't run this twice while it is runnig
IsBusy = true;
Debug.WriteLine("[ExecuteLoadItemsCommand]Start loading items...");
try
{
//clear all the items in the list
Items.Clear();
ItemGrouped.Clear();
Debug.WriteLine("[ExecuteLoadItemsCommand]Cleared items list");
//update the list only if it is connected to the internet
if (CrossConnectivity.Current.IsConnected)
{
//get new events online, and add them to the database if there is a new one
await SyncEvents.UpdateAcaEventsAsync();
}
else
{
Debug.WriteLine("No internet connection");
}
var itemsInDb = await App.Database.SortListByDate();
//add all the items to the list
foreach (var item in itemsInDb)
{
//add items to the list
Items.Add(item);
}
//refresh the grouped item list
SetupGroup(Items);
}
catch (Exception ex)
{
await SyncEvents.SendErrorEmail(ex.Message);
}
finally
{
//set the IsBusy to false after the program finishes
IsBusy = false;
ScrollToEvent = true;
Debug.WriteLine("[ExecuteLoadItemsCommand]There are " + Items.Count + " items in the database");
}
}
