我正在尝试绑定一个从Window派生的类(MainWindow)的属性(MyTitle)的值。 我创建了一个名为MyTitleProperty的依赖属性,实现了INotifyPropertyChanged接口,并修改了MyTitle的set方法,调用PropertyChanged事件并将"MyTitle"作为属性名称参数传递。 我在构造函数中将MyTitle设置为"Title",但是当窗口打开时,标题为空白。 如果我在Loaded事件上放置一个断点,则MyTitle = "Title" ,但this.Title = ""。 我肯定是没有注意到的一些极其明显的事情。 请帮帮我!
MainWindow.xaml
<Window
x:Class="WindowTitleBindingTest.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:this="clr-namespace:WindowTitleBindingTest"
Height="350"
Width="525"
Title="{Binding Path=MyTitle, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type this:MainWindow}}}"
Loaded="Window_Loaded">
<Grid>
</Grid>
</Window>
MainWindow.xaml.cs:
public partial class MainWindow : Window, INotifyPropertyChanged
{
public static readonly DependencyProperty MyTitleProperty = DependencyProperty.Register("MyTitle", typeof(String), typeof(MainWindow));
public String MyTitle
{
get { return (String)GetValue(MainWindow.MyTitleProperty); }
set
{
SetValue(MainWindow.MyTitleProperty, value);
OnPropertyChanged("MyTitle");
}
}
public MainWindow()
{
InitializeComponent();
MyTitle = "Title";
}
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(String propertyName)
{
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
}
}