如何编写与此XAML代码对应的C#等效代码，以自定义选定的treeviewItem颜色

现在很少有树视图项目添加到此树视图中。 树看起来很好，但一旦焦点从树上移除，它的选定树项将变灰

也请参考此问题

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你可以这样做

TreeView treeNode = new TreeView();

//In some loop
TreeViewItem childTreeNode = new TreeViewItem();
childTreeNode.Header = "Item 1";
childTreeNode.ToolTip = "File Path";

childTreeNode.Foreground = Brushes.Black;
childTreeNode.Background = Brushes.White;

treeNode.Items.Add(childTreeNode);
//End Loop

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感谢您使用类似的语句SolidColorBrush colorBrush=新SolidColorBrush（Colors.DodgerBlue）；添加（SystemColor.ControlBrushKey、colorBrush）；

TreeView treeNode = new TreeView();

//In some loop
TreeViewItem childTreeNode = new TreeViewItem();
childTreeNode.Header = "Item 1";
childTreeNode.ToolTip = "File Path";

childTreeNode.Foreground = Brushes.Black;
childTreeNode.Background = Brushes.White;

treeNode.Items.Add(childTreeNode);
//End Loop

var colorBrush = new SolidColorBrush(Colors.Transparent);
treeNode.Resources.Add(SystemColors.HighlightBrushKey, colorBrush);