资料管理

过程

添加一个TreeView控件：

窗体加载的时候把文件添加到树；

View Code

 1         private void Form1_Load(object sender, EventArgs e)
 2         {
 3             CreateParentNode();
 4         }
 5 
 6         void CreateParentNode()
 7         {
 8             tvType.Nodes.Clear();
 9             string path = "资料";
10             TreeNode parent = new TreeNode();
11             parent.Text = path;
12             tvType.Nodes.Add(parent);
13             CreateChildNode(path, parent);
14         }
15 
16         void CreateChildNode(string path,TreeNode parent)
17         {
18             DirectoryInfo di = new DirectoryInfo(path);
19             DirectoryInfo[] dis = di.GetDirectories();
20             foreach (DirectoryInfo item in dis)
21             {
22                 TreeNode child = new TreeNode();
23                 child.Text = item.Name;
24                 child.Tag = item.FullName;
25                 parent.Nodes.Add(child);
26                 CreateFileNode(item.FullName,child);
27             }
28         }
29         void CreateFileNode(string path, TreeNode child)
30         {
31             DirectoryInfo di = new DirectoryInfo(path);
32             FileInfo[] fis = di.GetFiles();
33             foreach (FileInfo  item in fis)
34             {
35                 TreeNode tn = new TreeNode();
36                 tn.Text = item.Name;
37                 tn.Tag = item.FullName;
38                 child.Nodes.Add(tn);
39             }
40         }

选中文件的时候把文件的内容加到文本框上

View Code

        private void tvType_AfterSelect(object sender, TreeViewEventArgs e)
        {
            if (e.Node.Level == 2)
            {
                if (!e.Node.Text.ToString().Contains(".txt")) return;
                
                    txtContens.Text = File.ReadAllText(e.Node.Tag.ToString(), Encoding.GetEncoding("gb2312"));
                    txtTitle.Text = Path.GetFileNameWithoutExtension(e.Node.Text);
                
            }
        }

添加一个保存按钮

View Code

        private void btnSave_Click(object sender, EventArgs e)
        {
            if (tvType.SelectedNode == null)
                return;
            if (tvType.SelectedNode.Tag == null)
                return;
            string path = tvType.SelectedNode.Tag.ToString();
            if (path.LastIndexOf(".txt") > 0)
            {
                string content = txtContens.Text;
                File.WriteAllText(path,content,Encoding.GetEncoding("gb2312"));
                MessageBox.Show("保存成功");
                CreateParentNode();
            }
        }