WPF(Windows Presentation Foundation)\ub294 Microsoft\uc5d0\uc11c \uac1c\ubc1c\ud55c \uac15\ub825\ud55c UI \ud504\ub808\uc784\uc6cc\ud06c\ub85c, MVVM(Model-View-ViewModel) \ub514\uc790\uc778 \ud328\ud134\uc774 \ub110\ub9ac \ucc44\ud0dd\ub418\uace0 \uc788\uc2b5\ub2c8\ub2e4. MVVM \ud328\ud134\uc740 UI\uc640 \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 \ubd84\ub9ac\ud558\uc5ec \uac1c\ubc1c \uc2dc \uc720\uc9c0\ubcf4\uc218\uc131\uacfc \ud14c\uc2a4\ud2b8 \uc6a9\uc774\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4. \ucd5c\uadfc \uba87\uba87 \uac1c\ubc1c\uc790\ub4e4\uc740 Reactive Extensions (Rx)\ub97c \ud1b5\ud574 \uc0c1\ud0dc \ubcc0\ud654\uc640 \ubc18\uc751\ud615 \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \ud6a8\uc728\uc801\uc778 \ud1b5\ud569\uc744 \uc774\ub8e8\uace0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uae00\uc5d0\uc11c\ub294 MVVM \ud328\ud134\uc5d0\uc11c Rx\ub97c \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uacfc \uc608\uc81c\ub97c \ud1b5\ud574 \uc774\ub97c \uc124\uba85\ud558\uace0\uc790 \ud569\ub2c8\ub2e4.<\/p>\n
Reactive Extensions\ub294 \ubc18\uc751\ud615 \ud504\ub85c\uadf8\ub798\ubc0d\uc744 \uc704\ud55c \ub77c\uc774\ube0c\ub7ec\ub9ac\ub85c, \ube44\ub3d9\uae30 \ub370\uc774\ud130 \uc2a4\ud2b8\ub9bc\uacfc \uc774\ubca4\ud2b8 \uae30\ubc18 \ud504\ub85c\uadf8\ub7a8\uc744 \ub354 \uc27d\uac8c \uad6c\ud604\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc90d\ub2c8\ub2e4. Rx\ub97c \uc0ac\uc6a9\ud558\uba74 Observable \uc2dc\ud000\uc2a4\ub97c \ub9cc\ub4e4\uace0, \ub2e4\uc591\ud55c \uc5f0\uc0b0\uc790\ub4e4\uc744 \ud1b5\ud574 \ub370\uc774\ud130\ub97c \ud544\ud130\ub9c1, \ubcc0\ud658 \ubc0f \uc870\ud569\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \uae30\ub2a5\ub4e4\uc740 MVVM \ud328\ud134\uc5d0\uc11c ViewModel\uacfc View \uac04\uc758 \uacbd\ub7c9\ud654\ub41c \ub370\uc774\ud130 \ubc14\uc778\ub529\uc744 \ud1b5\ud574 \uc0c1\ud0dc \uad00\ub9ac\ub97c \ubcf4\ub2e4 \uc27d\uac8c \ub9cc\ub4e4\uc5b4 \uc90d\ub2c8\ub2e4.<\/p>\n
MVVM \ud328\ud134\uacfc Reactive Extensions\ub97c \ud1b5\ud569\ud558\uae30 \uc704\ud574\uc11c\ub294 \uc8fc\ub85c \ub2e4\uc74c\uacfc \uac19\uc740 \uac1c\ub150\ub4e4\uc774 \ud544\uc694\ud569\ub2c8\ub2e4:<\/p>\n
\uc6b0\uc120 MVVM \uad6c\uc870\ub97c \ud65c\uc6a9\ud558\uc5ec \uac04\ub2e8\ud55c \uce74\uc6b4\ud130 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ub9cc\ub4e4\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4. \uc774 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc740 \ubc84\ud2bc \ud074\ub9ad \uc2dc \uce74\uc6b4\ud130 \uac12\uc744 \uc99d\uac00\uc2dc\ud0a4\uace0 \ud654\uba74\uc5d0 \ud45c\uc2dc\ud569\ub2c8\ub2e4. \uc774\ub97c \uc704\ud574 Rx\ub97c \uc0ac\uc6a9\ud558\uc5ec \uce74\uc6b4\ud130 \uac12\uc758 \ubcc0\ud654\uc5d0 \ubc18\uc751\ud558\ub3c4\ub85d \ub9cc\ub4e4\uc5b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\n\nusing System;\nusing System.Reactive.Subjects;\nusing System.Windows.Input;\n\npublic class CounterViewModel : BaseViewModel\n{\n private int _count;\n public int Count\n {\n get => _count;\n set => SetProperty(ref _count, value);\n }\n\n private readonly Subject _countSubject = new Subject();\n public ICommand IncrementCommand { get; }\n\n public CounterViewModel()\n {\n IncrementCommand = new RelayCommand(Increment);\n \n \/\/ Observable \ud328\ud134 \uc0ac\uc6a9\n _countSubject.Subscribe(value =>\n {\n Count = value; \/\/ \uc0c1\ud0dc \ubcc0\ud654 \uac10\uc9c0\n });\n }\n\n private void Increment()\n {\n Count++;\n _countSubject.OnNext(Count); \/\/ \uc0c1\ud0dc \ubcc0\ud654 \uc804\ud30c\n }\n}\n<\/int><\/int><\/code>\n<\/pre>\n2. View \uc124\uacc4<\/h4>\n\n\n\n \n <\/textblock>\n