WPF中如何优雅的实现INotifyPropertyChanged接口

我用的比较多的框架是Prism,我们就可以借鉴一下Prism的INotifyPropertyChanged实现的源码

WPF中如何优雅的实现INotifyPropertyChanged接口
 1 public abstract class BindableBase : INotifyPropertyChanged
 2 {
 3     public event PropertyChangedEventHandler PropertyChanged;
 4 
 5     protected virtual bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
 6     {
 7         if (EqualityComparer<T>.Default.Equals(storage, value))
 8         {
 9             return false;
10         }
11         storage = value;
12         RaisePropertyChanged(propertyName);
13         return true;
14     }
15 
16     protected virtual bool SetProperty<T>(ref T storage, T value, Action onChanged, [CallerMemberName] string propertyName = null)
17     {
18         if (EqualityComparer<T>.Default.Equals(storage, value))
19         {
20             return false;
21         }
22         storage = value;
23         onChanged?.Invoke();
24         RaisePropertyChanged(propertyName);
25         return true;
26     }
27 
28     protected void RaisePropertyChanged([CallerMemberName] string propertyName = null)
29     {
30         OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
31     }
32 
33     protected virtual void OnPropertyChanged(PropertyChangedEventArgs args)
34     {
35         this.PropertyChanged?.Invoke(this, args);
36     }
37 }
View Code

怎么使用呢?其实很简单,继承一下BindableBase,然后就可以很简单的实现动态通知了

WPF中如何优雅的实现INotifyPropertyChanged接口
1 class Sample : BindableBase
2     {
3         private string name;
4         public string Name
5         {
6             get { return name; }
7             set { SetProperty(ref name, value); }
8         }
9     }
View Code

 

WPF中如何优雅的实现INotifyPropertyChanged接口

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