protected override void OnDispose()
{
if (IncrementalLoadingItems.Source is HohoemaIncrementalSourceBase <ITEM_VM> )
{
(IncrementalLoadingItems.Source as HohoemaIncrementalSourceBase <ITEM_VM>).Error -= HohoemaIncrementalSource_Error;
}
IncrementalLoadingItems?.Dispose();
}
protected override void OnDispose()
{
if (IncrementalLoadingItems != null)
{
IncrementalLoadingItems.BeginLoading -= BeginLoadingItems;
IncrementalLoadingItems.DoneLoading -= CompleteLoadingItems;
if (IncrementalLoadingItems.Source is HohoemaIncrementalSourceBase <ITEM_VM> )
{
(IncrementalLoadingItems.Source as HohoemaIncrementalSourceBase <ITEM_VM>).Error -= HohoemaIncrementalSource_Error;
}
IncrementalLoadingItems.Dispose();
IncrementalLoadingItems = null;
}
}
protected async Task ResetList()
{
HasItem.Value = true;
LoadedItemsCount.Value = 0;
IsSelectionModeEnable.Value = false;
SelectedItems.Clear();
if (IncrementalLoadingItems != null)
{
if (IncrementalLoadingItems.Source is HohoemaIncrementalSourceBase <ITEM_VM> )
{
(IncrementalLoadingItems.Source as HohoemaIncrementalSourceBase <ITEM_VM>).Error -= HohoemaIncrementalSource_Error;
}
IncrementalLoadingItems.BeginLoading -= BeginLoadingItems;
IncrementalLoadingItems.DoneLoading -= CompleteLoadingItems;
IncrementalLoadingItems.Dispose();
IncrementalLoadingItems = null;
}
try
{
var source = GenerateIncrementalSource();
MaxItemsCount.Value = await source.ResetSource();
IncrementalLoadingItems = new IncrementalLoadingCollection <IIncrementalSource <ITEM_VM>, ITEM_VM>(source);
OnPropertyChanged(nameof(IncrementalLoadingItems));
IncrementalLoadingItems.BeginLoading += BeginLoadingItems;
IncrementalLoadingItems.DoneLoading += CompleteLoadingItems;
if (IncrementalLoadingItems.Source is HohoemaIncrementalSourceBase <ITEM_VM> )
{
(IncrementalLoadingItems.Source as HohoemaIncrementalSourceBase <ITEM_VM>).Error += HohoemaIncrementalSource_Error;
}
PostResetList();
}
catch
{
IncrementalLoadingItems = null;
NowLoadingItems.Value = false;
HasItem.Value = true;
HasError.Value = true;
Debug.WriteLine("failed GenerateIncrementalSource.");
}
}
