我有一個ListBox
,簡單的DataTemplate
,CheckBox
和TextBox
。 如果用戶檢查CheckBox
我想獲取此更改的項目,如ListBox
的屬性SelectedItem
。帶DataTemplate的ListBox識別SelectedItem
我怎樣才能從List2
,這已改變的元素?
MyListItem
:
public class MyListItem2 : ReactiveObject
{
private string _name;
public string Name
{
get { return _name; }
set
{
this.RaiseAndSetIfChanged(ref _name, value, "Name");
}
}
private bool _isMarked;
public bool IsMarked
{
get { return _isMarked; }
set
{
this.RaiseAndSetIfChanged(ref _isMarked, value, "IsMarked");
}
}
}
查看:
<Window xmlns="https://github.com/avaloniaui"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:DataTemplate.Views.MainWindow"
xmlns:viewsmodels="clr-namespace:DataTemplate.ViewModels;assembly=DataTemplate"
xmlns:dt="clr-namespace:DataTemplate;assembly=DataTemplate"
Title="DataTemplate" Width="700">
<Window.DataContext>
<viewsmodels:MainWindowViewModel />
</Window.DataContext>
<Grid ColumnDefinitions="250">
<ListBox Grid.Column="1" Items="{Binding List2}">
<ListBox.ItemTemplate>
<DataTemplate DataType="dt:MyListItem2">
<Grid ColumnDefinitions="50*,50*">
<CheckBox Grid.Column="0" Content="Mark" IsChecked="{Binding IsMarked}"/>
<TextBox Grid.Column="1" Text="{Binding Name}"/>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
視圖模型:
public class MainWindowViewModel : ReactiveObject
{
public ObservableCollection<MyListItem2> List2 { get; set; }
public MainWindowViewModel()
{
List2 = new ObservableCollection<MyListItem2>();
Random rand = new Random();
for (int i = 0; i < rand.Next(1, 20); i++)
{
MyListItem2 mli = new MyListItem2();
mli.Name = "ListItem" + i;
mli.IsMarked = false;
mli.PropertyChanged += ItemChanged;
List2.Add(mli);
}
}
private void ItemChanged(object sender, PropertyChangedEventArgs e)
{
var item = sender as MyListItem2;
Console.WriteLine(string.Format("changed: {0} {1}", item.Name, item.IsMarked));
}
}
對不起,我更新了問題。請注意,它是.net核心和AvaloniaUI。 – EinApfelBaum
我把你的第一點和這個作品。我只需要將PropertyChanged事件路由到我的ViewModel。 我更新了問題中的代碼。 – EinApfelBaum