C#实现简单小说阅读器

使用C#实现的简单小说阅读器   

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string path = @"C:\Users\sww\Desktop";//初始路径
            string[] dirs = Directory.GetDirectories(path);
            for (int i = 0; i < dirs.Length; i++)
            {
                int count = 0;
                if (hassubfile(dirs[i], count))
                {
                    TreeNode node = treeView1.Nodes.Add(Path.GetFileName(dirs[i]));
                    addnodes(dirs[i], node);
                }
              
            }
            string[] files = Directory.GetFiles(path,"*.txt");
            for (int i = 0; i < files.Length; i++)
            {
                TreeNode nod = treeView1.Nodes.Add(Path.GetFileName(files[i]));
                nod.Tag = files[i];
            }
                       

        }
        private void addnodes(string path, TreeNode node)//使用递归,查找文件夹并添加txt文件到treewiew中!
        {
            string[] dir = Directory.GetDirectories(path);
            for (int i = 0; i < dir.Length; i++)
            {
                int count = 0;
                if (hassubfile(dir[i], count))
                {
                    TreeNode nod = node.Nodes.Add(Path.GetFileName(dir[i]));
                    addnodes(dir[i], nod);
                }
               
            }
            string[] file = Directory.GetFiles(path,"*.txt");
            for (int i = 0; i < file.Length; i++)
            {
               TreeNode nod = node.Nodes.Add(Path.GetFileName(file[i]));
               nod.Tag = file[i];
            }
        }

        private void treeView1_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (e.Node.Tag != null)
            {
                textBox1.Text = File.ReadAllText(e.Node.Tag.ToString(),Encoding.Default);
            }
         
        }

        private bool hassubfile(string path,int count)//判断文件夹以及其子文件夹是否包含txt文件,使用递归调用;
        {
           
            string[] files = Directory.GetFiles(path, "*.txt");
            if (files.Length != 0)
            {
                count += files.Length;
              
            }
            string[] dirs = Directory.GetDirectories(path);
            for (int i = 0; i < dirs.Length; i++)
            {
                hassubfile(dirs[i],count);
            }
            if (count != 0)
            {
                return true;
            }
            else return false;
        }
   

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