我有一个字符串依赖属性(SearchText),当更新时,需要更新一个集合依赖属性(Results)。
我的集合依赖属性:
public IEnumerable<string> Results{
get { return (IEnumerable<string>) GetValue(ResultsProperty); }
set { SetValue(ResultsProperty, value); }
}
public static readonly DependencyProperty ResultsProperty=
DependencyProperty.Register("Results", typeof(IEnumerable<string>), typeof(MainWindowVM), new UIPropertyMetadata(new List<string>()));
我尝试过这个方法,但没有成功。我在“Results = ...”行设置了断点,但它从未被触发。
public string SearchText{
get { return (string) GetValue(SearchTextProperty); }
set {
Results =
from T in Tree.GetPeople(value)
select T.FullName;
SetValue(SearchTextProperty, value);
}
}
public static readonly DependencyProperty SearchTextProperty=
DependencyProperty.Register("SearchText", typeof(string), typeof(MainWindowVM), new UIPropertyMetadata(""));
XAML:
<TextBox DockPanel.Dock="Top" Text="{Binding SearchValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
<ListBox DockPanel.Dock="Top" ItemsSource="{Binding NameResults}" SelectedItem="{Binding Search}" />