mvvm.md

@@ -81,25 +81,24 @@ XAML 바인딩을 사용하면 아래와 같이 선언하여 의존성을 끊을
 ```csharp
  public class MainViewModel : INotifyPropertyChanged
 {
-        public event PropertyChangedEventHandler PropertyChanged;
-
-        [NotifyPropertyChangedInvocator]
-
-        protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
-        {
-            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
-        }
-
-        private string _productName;
-        public string ProductName
-        {
-            get { return _productName; }
-            set
-            {
-                _productName = value;
-                OnPropertyChanged();
-            }
-        }
+      public event PropertyChangedEventHandler PropertyChanged;
+
+      [NotifyPropertyChangedInvocator]
+      protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+      {
+          PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+      }
+
+      private string _productName;
+      public string ProductName
+      {
+          get { return _productName; }
+          set
+          {
+              _productName = value;
+              OnPropertyChanged();
+          }
+      }
 }
 ```
 ##### 4) ICommand