AsyncObservableDictionary

This collection extends the functionality of the AsyncObservableCollection by adding a dictionary behavior to the collection.

Type parameters

Name	Description
TKey	The dictionary key type
TValue	The collection value type, this type must implements the IUniqueObject because the GeyKey property will be automatically used as the key for each item in the dictionary

Added Methods

Name	Description
FillDicionaryValues	Copy the content of another collection

Added Properties

Name	Description
Item[TKey]	Gets the element with the specified key

Remarks

The best way to create an instance of this collection is to use the factory method AsyncObservableDictionary.Create() which will create the collection on the UI thread.

C# Example:

//Set the owning thread in start of the application
UISynchronizationContext.SetContext(SynchronizationContext.Current);
//Create the dictionary
var dictionary = AsyncObservableDictionary<int,Person>.Create();
//Subscribe to the SelectedItemChanged event
dictionary.SelectedItemChanged += (sender, item) =>
{
    MessageBox.Show($"An item was selected {item.FirstName}");
};
var person = new Person { ID = 1,FirstName = "Aghyad" };

//Add an item to the collection
dictionary.Add(person);
//Set the selected item (This will trigger the SelectedItemChanged event)
dictionary.SelectedItem = person;
//Add more items to the collection in this case using a method (GetFromDatabase) which returns Task<IEnumerable<Person>>
await dictionary.FillAsync(GetFromDatabase());
//Get the item by the ID properties
var samePesron = dictionary[1];