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4 天以前 2e889843b4c171f2d6ad8e0d53084040703d11f6

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using System.Windows;
using System.Windows.Controls;
 
namespace HMI.UI
{
    public class TreeListView : TreeView
    {
        public static readonly DependencyProperty ColumnsProperty =
            DependencyProperty.Register("Columns", typeof(GridViewColumnCollection), typeof(TreeListView),
                new PropertyMetadata(new GridViewColumnCollection()));
 
        public GridViewColumnCollection Columns
        {
            get { return (GridViewColumnCollection)GetValue(ColumnsProperty); }
            set { SetValue(ColumnsProperty, value); }
        }
 
        public static readonly DependencyProperty ColumnHeaderContainerStyleProperty =
            DependencyProperty.Register("ColumnHeaderContainerStyle", typeof(Style), typeof(TreeListView),
                new PropertyMetadata(null));
 
        public Style ColumnHeaderContainerStyle
        {
            get { return (Style)GetValue(ColumnHeaderContainerStyleProperty); }
            set { SetValue(ColumnHeaderContainerStyleProperty, value); }
        }
 
        static TreeListView()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(TreeListView),
                new FrameworkPropertyMetadata(typeof(TreeListView)));
        }
 
        public TreeListView()
        {
            Columns = new GridViewColumnCollection();
        }
 
        protected override DependencyObject GetContainerForItemOverride()
        {
            return new TreeListViewItem(0, this);
        }
    }
 
    public class TreeListViewItem : TreeViewItem
    {
        public static readonly DependencyProperty ColumnsProperty =
            DependencyProperty.Register("Columns", typeof(GridViewColumnCollection), typeof(TreeListViewItem),
                new PropertyMetadata(null));
 
        public int level { get; private set; }
        private TreeListView root;
 
        public TreeListViewItem(int level, TreeListView root)
        {
            this.level = level;
            this.root = root;
            this.Loaded += TreeListViewItem_Loaded;
        }
 
        public GridViewColumnCollection Columns
        {
            get { return (GridViewColumnCollection)GetValue(ColumnsProperty); }
            set { SetValue(ColumnsProperty, value); }
        }
 
        static TreeListViewItem()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(TreeListViewItem),
                new FrameworkPropertyMetadata(typeof(TreeListViewItem)));
        }
 
        private void TreeListViewItem_Loaded(object sender, RoutedEventArgs e)
        {
            if (root is TreeListView treeListView)
            {
                Columns = treeListView.Columns;
            }
        }
 
        protected override DependencyObject GetContainerForItemOverride()
        {
            return new TreeListViewItem(level + 1, root);
        }
    }
}