public async void AddNewsItem(NieuwsItem nitem)
 {
     await InitLocalStoreAsync();
     await Table.InsertAsync(nitem);
     await SyncAsync();
     await RefreshItems();
 }
 public async void DeleteItem(NieuwsItem nitem)
 {
     await InitLocalStoreAsync();
     await Table.DeleteAsync(nitem);
     await SyncAsync();
     await RefreshItems();
 }
 public async void AdjustNewsItem(NieuwsItem nitem)
 {
     await InitLocalStoreAsync();
     await Table.UpdateAsync(nitem);
     await SyncAsync();
     await RefreshItems();
 }