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1.Language Basics
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C# / C Sharp
C# / C Sharp by API
C# / CSharp Open Source
C# / CSharp Tutorial » GUI Windows Forms » TreeView 
23.31.7.Directory TreeView
using System;
using System.Drawing;
using System.IO;
using System.Windows.Forms;

class MyClass : Form
{
    public static void Main()
    {
        Application.Run(new MyClass());
    }
    public MyClass()
    {
        TreeView tree = new TreeView();
        tree.Parent = this;
        tree.Dock = DockStyle.Fill;

        TreeNode nodeDriveC = new TreeNode("C:\\");
        tree.Nodes.Add(nodeDriveC);

        AddDirectories(nodeDriveC);
    }
    void AddDirectories(TreeNode node)
    {
        string strPath = node.FullPath;
        DirectoryInfo dirinfo = new DirectoryInfo(strPath);
        DirectoryInfo[] adirinfo;

        adirinfo = dirinfo.GetDirectories();

        foreach (DirectoryInfo di in adirinfo)
        {
            TreeNode nodeDir = new TreeNode(di.Name);
            node.Nodes.Add(nodeDir);
            AddDirectories(nodeDir);
        }
    }
}
23.31.TreeView
23.31.1.Simple Treeview
23.31.2.Use TreeView.Nodes.AddRange to add nodes
23.31.3.TreeView selection event
23.31.4.Use TreeView to display Directories
23.31.5.TreeView: Add NodesTreeView: Add Nodes
23.31.6.Tree node foreground and background color, tooltipsTree node foreground and background color, tooltips
23.31.7.Directory TreeView
23.31.8.Hierarchical Tree View for displaying database table
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