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)
{
= name;
this.age = age;
}
string name;
public string Name
{
get
{ return ; }
set
{
= 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
















