/// <summary>
/// Gets the complete list of customers from the database.
/// </summary>
private async void GetCustomerList()
{
IsLoading = true;
var db = new ContosoDataSource();
var customers = await db.Customers.GetAsync();
await Utilities.CallOnUiThreadAsync(() =>
{
if (customers != null)
{
ErrorText = null;
Customers.Clear();
foreach (var c in customers)
{
Customers.Add(new CustomerViewModel(c));
}
}
else
{
// There was a problem retreiving customers. Let the user know.
ErrorText = "Couldn't retrieve customers. Check your connection and " +
"click Refresh to try again.";
}
IsLoading = false;
});
}
/// <summary>
/// Returns the order with the specified ID.
/// </summary>
/// <param name="orderId">The ID of the order to retrieve.</param>
/// <returns>The order, if it exists; otherwise, null. </returns>
private static async Task <Order> getOrder(Guid orderId)
{
var db = new ContosoDataSource();
var order = await db.Orders.GetAsync(orderId);
return(order);
}
private async void GetOrdersList()
{
IsLoading = true;
var db = new ContosoDataSource();
var orders = await db.Orders.GetAsync(Model);
await Utilities.CallOnUiThreadAsync(() =>
{
if (orders != null)
{
foreach (Order o in orders)
{
Orders.Add(o);
}
}
else
{
// There was a problem retreiving customers. Let the user know.
ErrorText = "Couldn't retrieve orders.";
}
IsLoading = false;
});
}
/// <summary>
/// Loads the customer with the specified ID.
/// </summary>
/// <param name="customerId">The ID of the customer to load.</param>
private async void loadCustomer(Guid customerId)
{
var db = new ContosoDataSource();
var customer = await db.Customers.GetAsync(customerId);
await Utilities.CallOnUiThreadAsync(() =>
{
Customer = customer;
});
}
/// <summary>
/// Loads the customer with the specified ID.
/// </summary>
/// <param name="customerId">The ID of the customer to load.</param>
private async void LoadCustomer(Guid customerId)
{
var db = new ContosoDataSource();
var customer = await db.Customers.GetAsync(customerId);
await DispatcherHelper.ExecuteOnUIThreadAsync(() =>
{
Customer = customer;
});
}
/// <summary>
/// Queries the database for a current list of customers.
/// </summary>
private void OnSync()
{
Task.Run(async() =>
{
IsLoading = true;
var db = new ContosoDataSource();
foreach (var modifiedCustomer in Customers
.Where(x => x.IsModified).Select(x => x.Model))
{
await db.Customers.PostAsync(modifiedCustomer);
}
await GetCustomerListAsync();
IsLoading = false;
});
}
/// <summary>
/// Queries the database for a customer result matching the search text entered.
/// </summary>
private async void CustomerSearchBox_TextChanged(AutoSuggestBox sender,
AutoSuggestBoxTextChangedEventArgs args)
{
// We only want to get results when it was a user typing,
// otherwise we assume the value got filled in by TextMemberPath
// or the handler for SuggestionChosen
if (args.Reason == AutoSuggestionBoxTextChangeReason.UserInput)
{
// If no search query is entered, refresh the complete list.
if (string.IsNullOrEmpty(sender.Text))
{
sender.ItemsSource = null;
}
else
{
ContosoDataSource data = new ContosoDataSource();
sender.ItemsSource = await data.Customers.GetAsync(sender.Text);
}
}
}
private async void OnSave()
{
if (CanSave == true)
{
Model.FirstName = _firstNameOriginal = FirstName;
Model.LastName = _lastNameOriginal = LastName;
Model.Company = _companyOriginal = Company;
Model.Email = _emailOriginal = Email;
Model.Phone = _phoneOriginal = Phone;
Model.Address = _addressOriginal = Address;
var db = new ContosoDataSource();
await db.Customers.PostAsync(Model);
HasChanges = true;
if (IsNewCustomer == true)
{
IsNewCustomer = false;
}
}
}
/// <summary>
/// Gets the complete list of customers from the database.
/// </summary>
public async Task GetCustomerListAsync()
{
await Utilities.CallOnUiThreadAsync(() => IsLoading = true);
var db = new ContosoDataSource();
var customers = await db.Customers.GetAsync();
if (customers == null)
{
return;
}
await Utilities.CallOnUiThreadAsync(() =>
{
Customers.Clear();
foreach (var c in customers)
{
Customers.Add(new CustomerViewModel(c)
{
Validate = true
});
}
IsLoading = false;
});
}
