WPF 多重绑定未按预期更新源；带有“全选”的复选框

使用WPF多重绑定时，有时我们可能会遇到源未按预期更新的问题。在这种情况下，我们可以通过添加一个带有"全选"功能的复选框来解决这个问题。本文将介绍如何 ，并提供一个案例代码来说明这个问题。

xaml
    
    
    
    

csharp
public class ViewModel : INotifyPropertyChanged
{
    private bool _isAllSelected;
    private bool _isOption1Selected;
    private bool _isOption2Selected;
    private bool _isOption3Selected;
    public bool IsAllSelected
    {
        get { return _isAllSelected; }
        set
        {
            _isAllSelected = value;
            OnPropertyChanged(nameof(IsAllSelected));
            // 更新其他选项的状态
            IsOption1Selected = value;
            IsOption2Selected = value;
            IsOption3Selected = value;
        }
    }
    public bool IsOption1Selected
    {
        get { return _isOption1Selected; }
        set
        {
            _isOption1Selected = value;
            OnPropertyChanged(nameof(IsOption1Selected));
            // 其他逻辑处理
        }
    }
    public bool IsOption2Selected
    {
        get { return _isOption2Selected; }
        set
        {
            _isOption2Selected = value;
            OnPropertyChanged(nameof(IsOption2Selected));
            // 其他逻辑处理
        }
    }
    public bool IsOption3Selected
    {
        get { return _isOption3Selected; }
        set
        {
            _isOption3Selected = value;
            OnPropertyChanged(nameof(IsOption3Selected));
            // 其他逻辑处理
        }
    }
    public event PropertyChangedEventHandler PropertyChanged;
    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}