C recursively obtains all files under the folder and binds them to the treeview control

introduction ：C# Recursively get all the files under the folder And bind to TreeView Control code snippet

One 、 code snippet

• 1、 The front-end code ：

 <TreeView x:Name="BookMarkTree" SelectedItemChanged="BookMarkTree_SelectedItemChanged" BorderThickness="2" >
	<TreeView.ItemTemplate>
		<HierarchicalDataTemplate ItemsSource="{Binding Children}">
			<StackPanel Orientation="Vertical">
                 <TextBlock Text="{Binding Name}"></TextBlock>
			</StackPanel>
		</HierarchicalDataTemplate>
	</TreeView.ItemTemplate>
</TreeView>

• 2、 Back end code

// Data node to be bound 
public class Node
{
    
	public string Name {
     get; set; }
	public List<Node> Children {
     set; get; }
	public Node()
	{
    
		Children = new List<Node>();
	}
}

// Recursively get files and generate nodes 
 public Node GetChildren(DirectoryInfo directoryInfo)
{
    
	Node node = new Node() {
     Name = directoryInfo.Name };
	var subDirectory = directoryInfo.GetDirectories();
	var files = directoryInfo.GetFiles();
	if(files.Length !=0)
	{
    
		foreach (var item in files)
		{
    
			// Get the file name , Remove suffix 
			node.Children.Add(new Node {
     Name = item.Name.Replace(".html","")});
		}
	}

	if (subDirectory.Length != 0)
	{
    
		foreach (var item in subDirectory)
		{
    
			// Continuous iteration 
			node.Children.Add(GetChildren(item));
		}
	}
	
	return node;
}

// binding treeview Select response 
private void BookMarkTree_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
{
    
	TreeView treeView = (TreeView)sender;

	Node item = (Node)treeView.SelectedItem;

	// The following can be true of  item  To operate 
}

Two 、 Use cases

// Access to the node 
DirectoryInfo directoryInfo = new DirectoryInfo("./Documents/Help/Pages");
List<Node> nodes = new List<Node>();      
nodes.Add(GetChildren(directoryInfo));

// by TreeView binding  ItemsSource
BookMarkTree.ItemsSource = nodes;

3、 ... and 、 test result

• nodes Data view ：
  

• Software screenshot ：