Created
October 22, 2017 16:14
-
-
Save reicheltp/e2fa08c8401ce62d0dca8dfe98f261a5 to your computer and use it in GitHub Desktop.
INPC INCC
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| using System; | |
| using System.Collections.Generic; | |
| using System.Collections.ObjectModel; | |
| using System.ComponentModel; | |
| using System.Linq; | |
| using System.Runtime.CompilerServices; | |
| namespace ConsoleApp1 | |
| { | |
| class Program | |
| { | |
| static void Main(string[] args) | |
| { | |
| var list = new ObservableCollection<int>(); | |
| list.CollectionChanged += (_, e) => | |
| { | |
| Console.WriteLine($"CollectionChanged: {e.Action} - {string.Join(" - ", e.NewItems?.OfType<int>() ?? Enumerable.Empty<int>())} | {string.Join(" - ", e.OldItems?.OfType<int>() ?? Enumerable.Empty<int>())}"); | |
| }; | |
| list.Add(5); | |
| list.Add(6); | |
| list.Add(7); | |
| list.Add(8); | |
| list.RemoveAt(2); | |
| list.Move(0, 2); | |
| Console.WriteLine(string.Join(" - ", list)); | |
| // Property Changed | |
| var vm = new ViewModel(); | |
| vm.PropertyChanged += (_, e) => | |
| { | |
| Console.WriteLine($"PropertyChanged: {e.PropertyName}"); | |
| }; | |
| vm.Text = "Hallo"; | |
| vm.Text = "Hallo"; | |
| vm.Text = "Hallo World"; | |
| vm.Text = "Hallo World 2"; | |
| Console.ReadLine(); | |
| } | |
| class ViewModel : INotifyPropertyChanged | |
| { | |
| public event PropertyChangedEventHandler PropertyChanged; | |
| private string _text; | |
| public string Hello | |
| { | |
| get { return "Hello " + Text; } | |
| } | |
| public string Text | |
| { | |
| get | |
| { | |
| return _text; | |
| } | |
| set | |
| { | |
| if(_text != value) | |
| { | |
| _text = value; | |
| OnPropertyChanged(); | |
| OnPropertyChanged(nameof(Hello)); | |
| } | |
| } | |
| } | |
| void OnPropertyChanged([CallerMemberName] string name = "") // EventInvocator | |
| { | |
| PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name)); | |
| } | |
| } | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment