Question

我为WindowsPhone 8.1开发MVVM crud app

App向ListBox添加一些数据。每个项目都有复选框。如果选中或取消选中复选框 - 事件处理程序有效，属性更改值。但是，IsSelected属性的值在存储集合中不会更改。

View.xaml - 复选框代码

  <CheckBox  x:Name="checkbox" IsChecked="{Binding IsSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" >
<CheckBox.DataContext>
<loal:DataStorageModel/>
 </CheckBox.DataContext>
  </CheckBox>

DataStorageModel.cs

  public class DataStorageModel : INotifyPropertyChanged
    {
        public string Name { get; set; }
        public string Surname { get; set; }
        public int Age { get; set; }
        private bool _isSelected;
        public bool IsSelected
        {
            get { return _isSelected; }
            set
            {
                if (_isSelected != value)
                {
                    _isSelected = value;
                    OnPropertyChanged("IsSelected");
                }
            }
        }
            public event PropertyChangedEventHandler PropertyChanged;
            protected virtual void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }
    }

GitHub上的所有代码 - https://github.com/OlegZarevych/CRUD_WP81

Answer 1

尝试删除应该解决问题的UpdateSourceTrigger = PropertyChanged

WindowsPhone：IsSelected属性在集合中不会更改

1 个答案: