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Windows Phone???ListBox????????????????

???Windows Phone????ListBox??????????UI??????????????????????Operation not supported on read-only collection???????????????????????????????????????????????????????

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??????ListBox?????????????????????ListBox?ItemSource???????????List<string>?????????????????????????ListBox?ItemSource?????????????????????????

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??????????????ListBox?ItemSource?????ObservableCollection????????ListBox?????????????????? CRUD???????????????????????????????

1. ??ObservableCollection

????????????????????????????????????

using System.Collections.Generic;using System.Linq;public class MyViewModel{    private readonly ObservableCollection
   
     _items = new ObservableCollection
    
         {        "item1", "item2", "item3", "item4", "item5", "item6"    };    public ObservableCollection
     
       Items    {        get => _items;        private set => _items = value;    }}
     
    
   

2. ??ListBox?ItemSource

?XAML???ListBox?ItemSource???

3. ??????

??ObservableCollection?????????ListBox????????????????????????

private void deleteBtn_Click(object sender, RoutedEventArgs e){    if (ListBox1.Items.Count > 0)    {        ListBox1.Items.RemoveAt(1);    }}private void addBtn_Click(object sender, RoutedEventArgs e){    ListBox1.Items.Add("item7");}private void clearBtn_Click(object sender, RoutedEventArgs e){    ListBox1.Items.Clear();}

4. ??????

??ObservableCollection???INotifyCollectionChanged???ListBox??????????????????????????????????????CollectionChanged??????

5. ????

• ??DataContext?????ViewModel??DataContext?????????????????
• ???????ObservableCollection?????????UI???????UI???????????
• ???????????????????????????????????

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???ListBox?ItemSource???ObservableCollection?????????????????????????????????????????????UI???????????????Windows Phone?????????????????????????????????????????

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