C# 折叠树状视图时,选择项不会得到维护
我有一个带有父节点的树视图,其中包含子项。我正在选择子节点,在折叠相应的父节点时,选择不会得到维护 XAML:C# 折叠树状视图时,选择项不会得到维护,c#,wpf,mvvm,C#,Wpf,Mvvm,我有一个带有父节点的树视图,其中包含子项。我正在选择子节点,在折叠相应的父节点时,选择不会得到维护 XAML: 代码隐藏: public partial class MainWindow : Window { public static List<Person> persons = new List<Person>(); public MainWindow() { InitializeComponent();
代码隐藏:
public partial class MainWindow : Window
{
public static List<Person> persons = new List<Person>();
public MainWindow()
{
InitializeComponent();
Person person1 = new Person() { Name = "John Doe", uniqueName="1", Age = 42 };
person1.Children.Add(new Person() { Name = "Sammy Doe", uniqueName = "2", parentUniqueName = "1", Age = 13 });
Person person2 = new Person() { Name = "Jane Doe", uniqueName = "3", Age = 39 };
person2.Children.Add(new Person() { Name = "Jenny Moe\\", uniqueName = "4", parentUniqueName = "3", Age = 17 });
person2.Children.Add(new Person() { Name = "Jenny Moe", uniqueName = "5", parentUniqueName = "3", Age = 17 });
Person person3 = new Person() { Name = "Becky Toe", uniqueName = "6", Age = 25 };
person3.Children.Add(new Person() { Name = "Jenny Moe", uniqueName = "7", parentUniqueName = "6", Age = 17 });
persons.Add(person1);
persons.Add(person2);
persons.Add(person3);
trvPersons.ItemsSource = persons;
}
private void trvPersons_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
}
public class Person : INotifyPropertyChanged
{
public List<Person> Children { get; set; }
public string uniqueName { get; set; }
public string parentUniqueName { get; set; }
public Person()
{
this.Children = new List<Person>();
}
public string Name { get; set; }
public int Age { get; set; }
private bool isChecked;
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public bool IsChecked
{
get { return this.isChecked; }
set
{
this.isChecked = value;
if (value && !string.IsNullOrEmpty(this.parentUniqueName))
{
persons.ForEach(i => i.IsChecked = false);
var p = MainWindow.persons.FirstOrDefault(i => i.uniqueName == this.parentUniqueName);
if (p != null)
{
p.IsChecked = true;
}
}
OnPropertyChanged("IsChecked");
}
}
}
}
公共部分类主窗口:窗口
{
公共静态列表人员=新列表();
公共主窗口()
{
初始化组件();
Person person1=new Person(){Name=“John Doe”,uniqueName=“1”,Age=42};
person1.Children.Add(newperson(){Name=“Sammy Doe”,uniqueName=“2”,parentUniqueName=“1”,Age=13});
Person person2=新人(){Name=“Jane Doe”,uniqueName=“3”,年龄=39};
person2.Children.Add(newperson(){Name=“Jenny Moe\\”,uniqueName=“4”,parentUniqueName=“3”,Age=17});
person2.Children.Add(newperson(){Name=“Jenny Moe”,uniqueName=“5”,parentUniqueName=“3”,Age=17});
Person person3=新人(){Name=“Becky Toe”,uniqueName=“6”,年龄=25};
person3.Children.Add(newperson(){Name=“Jenny Moe”,uniqueName=“7”,parentUniqueName=“6”,Age=17});
人员。添加(人员1);
人员。添加(人员2);
人员。添加(人员3);
trvPersons.itemsource=人;
}
私有无效trvPersons\u SelectedItemChanged(对象发送方,RoutedPropertyChangedEventArgs e)
{
}
公共类人员:INotifyPropertyChanged
{
公共列表子项{get;set;}
公共字符串uniqueName{get;set;}
公共字符串parentUniqueName{get;set;}
公众人士()
{
this.Children=新列表();
}
公共字符串名称{get;set;}
公共整数{get;set;}
私人住宅被检查;
公共事件属性更改事件处理程序属性更改;
公共void OnPropertyChanged(字符串propertyName)
{
if(PropertyChanged!=null)
{
PropertyChanged(这是新的PropertyChangedEventArgs(propertyName));
}
}
公共场所被检查
{
获取{返回this.isChecked;}
设置
{
this.isChecked=值;
if(value&!string.IsNullOrEmpty(this.parentUniqueName))
{
persons.ForEach(i=>i.IsChecked=false);
var p=MainWindow.persons.FirstOrDefault(i=>i.uniqueName==this.parentUniqueName);
如果(p!=null)
{
p、 IsChecked=true;
}
}
财产变更(“已检查”);
}
}
}
}
基本上在WPF树状视图中,如果单击父节点进行折叠,所选项目将更改为父节点提供您的检查代码i此,到目前为止,只有我们可以检查问题。如果没有代码,很难判断问题出在哪里。找到示例代码-是否有其他方法来维护选择?
public partial class MainWindow : Window
{
public static List<Person> persons = new List<Person>();
public MainWindow()
{
InitializeComponent();
Person person1 = new Person() { Name = "John Doe", uniqueName="1", Age = 42 };
person1.Children.Add(new Person() { Name = "Sammy Doe", uniqueName = "2", parentUniqueName = "1", Age = 13 });
Person person2 = new Person() { Name = "Jane Doe", uniqueName = "3", Age = 39 };
person2.Children.Add(new Person() { Name = "Jenny Moe\\", uniqueName = "4", parentUniqueName = "3", Age = 17 });
person2.Children.Add(new Person() { Name = "Jenny Moe", uniqueName = "5", parentUniqueName = "3", Age = 17 });
Person person3 = new Person() { Name = "Becky Toe", uniqueName = "6", Age = 25 };
person3.Children.Add(new Person() { Name = "Jenny Moe", uniqueName = "7", parentUniqueName = "6", Age = 17 });
persons.Add(person1);
persons.Add(person2);
persons.Add(person3);
trvPersons.ItemsSource = persons;
}
private void trvPersons_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
}
public class Person : INotifyPropertyChanged
{
public List<Person> Children { get; set; }
public string uniqueName { get; set; }
public string parentUniqueName { get; set; }
public Person()
{
this.Children = new List<Person>();
}
public string Name { get; set; }
public int Age { get; set; }
private bool isChecked;
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
public bool IsChecked
{
get { return this.isChecked; }
set
{
this.isChecked = value;
if (value && !string.IsNullOrEmpty(this.parentUniqueName))
{
persons.ForEach(i => i.IsChecked = false);
var p = MainWindow.persons.FirstOrDefault(i => i.uniqueName == this.parentUniqueName);
if (p != null)
{
p.IsChecked = true;
}
}
OnPropertyChanged("IsChecked");
}
}
}
}