实现INotifyPropertyChanged接口时,每次在类中更新属性时,您都要负责调用PropertyChanged事件.
这通常会导致以下代码:
public class MyClass: INotifyPropertyChanged
private bool myfield;
public bool MyField
{
get { return myfield; }
set
{
if (myfield == value)
return;
myfield = value;
OnPropertyChanged(new PropertyChangedEventArgs("MyField"));
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(PropertyChangedEventArgs e)
{
PropertyChangedEventHandler h = PropertyChanged;
if (h != null)
h(this, e);
}
}
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这是每个属性12行.
如果一个人能够装饰这样的自动属性会简单得多:
[INotifyProperty]
public double MyField{ get; set; }
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但不幸的是,这是不可能的(例如,请参阅msdn上的这篇文章)
如何减少每个属性所需的代码量?
.net c# automatic-properties inotifypropertychanged .net-3.5