wpf学习笔记-更新数据源时间:2021-07-07 03:57:15此示例基于 wpf学习笔记-指定数据源 1.让对象实现 INotifyPropertyChanged接口,以便属性更改发出通知 public class Person : INotifyPropertyChanged { public Person() { } public Person(string name, int age) { this.name = name; this.age = age; } string name; public string Name { get { return this.name; } set { this.name = value; OnPropertyChanged("Name"); } } int age; public int Age { get { return this.age; } set { this.age = value; OnPropertyChanged("Age"); } } public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propName) { if (this.PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propName)); } } } 2.xaml(略去布局) < Label Content =" {Binding Name} " ></ Label > < Label Content =" {Binding Age} " ></ Label > < TextBox Text =" {Binding Path=Name, Source={StaticResource Tom}} " /> < TextBox Text =" {Binding Age} " /> 这里又出现了新的绑定语法 ,{Binding Path=Age}等价{Binding Age} 3.目标: 当更改目标属性的时候,更新数据源(更新以后则绑定的对象也发生变化,如更改TextBox的Text则Label的Content也发生变化) 4.设置更新数据源执行时间 通过设置 Binding对象的UpdateSourceTrigger 来确定执行时间. 根据需要设置UpdateSourceTrigger 属性 完