c# - 如何检查特定项目已选中或未选中

Question

我在 wpf 中创建了复选框，它是从互联网上获得的。我想看看哪个项目被选中或未被选中。知道如何做到这一点这是代码

类

public class CheckedListItem
{
    public int Id { get; set; }
    public string Name { get; set; }
    public bool IsChecked { get; set; }
    public string Email { get; set; }
}

用法

List<CheckedListItem> AvailablePresentationObjects = new List<CheckedListItem>();
        CheckedListItem item = new CheckedListItem();
        for (int i = 0; i < 10; i++)
        {
            item = new CheckedListItem();
            item.Id = i;
            item.Name = i.ToString();
            item.IsChecked = false;
            AvailablePresentationObjects.Add(item);

        }
        list.ItemsSource = AvailablePresentationObjects;

XMAL

<ListBox x:Name="list"  Margin="3,277,0,0" Height="234" VerticalAlignment="Top" Selec
tionMode="Extended">
                        <ListBox.ItemTemplate>
                            <HierarchicalDataTemplate>
                                <my:RibbonCheckBox Label="{Binding Name}" IsChecked="{Binding IsChecked}"  />
                            </HierarchicalDataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>

取自这里 Checked ListBox

问题是

How to implement property change so that i can know which item was checked and which was unchecked

My Code solution

Answer 1

您可以获得selected items的收藏: list.SelectedItems。您可以将每个项目转换到 CheckedListItem 并检查该项目是否已选中。如果你想处理属性变化，你应该实现接口(interface) INotifyPropertyChanged在 CheckedListItem 类中

INotifyPropertyChanged 示例:将其添加到您的类中并在属性中调用 OnPropertyChanged:

    private boolean _isChecked;
    public boolean IsChecked
    {
        get { return _isChecked; }
        set
        {
            _isChecked= value;
            OnPropertyChanged("IsChecked");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected void OnPropertyChanged(string name)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(name));
        }
    }