private void SearchResultProcessing(NotifyTaskCompletion <List <APIData> > searchResult, PropertyChangedEventArgs e = null)
{
// ... вимикаємо ActivityIndicator
if (e == null || e.PropertyName == "IsCompleted")
{
if (searchResult.IsCompleted)
{
ActivityIndicatorOff();
}
}
// ... обробляємо помилки, якщо вони є
if (e == null || e.PropertyName == "IsFaulted")
{
if (searchResult.ErrorMessage != null)
{
searchBar.Unfocus();
Text = null;
OutputDataObject = null;
ErrorMessage = searchResult.ErrorMessage;
return;
}
}
// ... виводимо результат пошуку у вигляді списку
if (e == null || e.PropertyName == "Result")
{
dropDownList.ItemsSource = searchResult.Result;
}
}
NotifyTaskCompletion <List <APIData> > Search(string queryTemplate, int id, string inputText)
{
var encodedInputText = WebUtility.UrlEncode(inputText.Replace("'", "''"));
var query = string.Format(queryTemplate, encodedInputText, id);
var serchResult = new NotifyTaskCompletion <List <APIData> >(InternetHelper.LoadControlsDataAsync <APIData>(query));
return(serchResult);
}
// При отриманны результату пошуку...
private static void OnSearchResultChanged(BindableObject bindable, object oldValue, object newValue)
{
ImproveSearchBar control = (ImproveSearchBar)bindable;
NotifyTaskCompletion <List <APIData> > searchResult = (NotifyTaskCompletion <List <APIData> >)newValue;
// ...очищаємо можливе повідомлення про помилку з минулого пошуку
control.ErrorMessage = null;
searchResult.PropertyChanged += control.OnSearchResultPropertyChanged;
control.SearchResultProcessing(searchResult);
}
public AppVM(ICommandsMethods commandsMethods)
{
DellComand = new NotifyTaskCompletion <int>(MyStaticService.DoNothing());
this.close = commandsMethods.DoCloseWindowCommand;
chekRemoveBook = commandsMethods.ChekSelected;
newAdd = commandsMethods.DoAddBookCommand;
changeBook = commandsMethods.DoChangeCommand;
give = commandsMethods.DoGiveCommand;
chekGiveBook = commandsMethods.ChekGiveAllowed;
take_away = commandsMethods.DoReturnCommand;
chekNail = commandsMethods.ChekReturnAllowed;
chuse = commandsMethods.DoChuseGivenBooksCommand;
using (AppContext db = new AppContext())
{
Books = new ObservableCollection <Book>(db.Books.ToList());
}
}
private async Task ChooseState(NotifyTaskCompletion <List <APIData> > stateSource)
{
if (Conditions == null && Conditions?.Count == 0)
{
return;
}
if (stateSource.IsFaulted)
{
if (ErrorMessage != stateSource.ErrorMessage)
{
ErrorMessage = stateSource.ErrorMessage;
}
await ShowState("Error");
}
else if (stateSource.IsNotCompleted)
{
await ShowState("Loading");
}
else
{
await ShowState("Normal");
}
}
private void LoadRegions()
{
Regions = new NotifyTaskCompletion <List <APIData> >(InternetHelper.LoadControlsDataAsync <APIData>(_urlAPIRegions));
}