winform中的树

    来平安不是很久，公司的业务逻辑理解得并不清晰，只是做些项目里的小功能，来的第一天就开始做winform中的tree的所有节点的增删改查的操作，代码很基础，但还是想写下来留个纪念，毕竟技术不高，只能实现简单的逻辑，但我相信时间，时间会把我简单的代码变得高深，变得强大。

public partial class FunctionsMenuForm : Form //一个tree窗体 { #region 该类的构造函数 public FunctionsMenuForm() { InitializeComponent(); } #endregion public void Initialize() //初始化方法 { _FunMenuTree.AfterSelect += new TreeViewEventHandler(_Tree_AfterSelect);//自定义挂接一个事件 _FunMenuTree.ExpandAll(); //展开所有树节点 if (_FunMenuTree.SelectedNode == null || GetButtonType(_FunMenuTree.SelectedNode.ImageIndex) != TouchButtonType.Menu) { _AddChidButton.Enabled = false; } } #region 具体实现这个挂接的事件 void _Tree_AfterSelect(object sender, TreeViewEventArgs e) { if (GetButtonType(e.Node.ImageIndex) == TouchButtonType.Menu) { _AddChidButton.Enabled = true; } else { _AddChidButton.Enabled = false; } } #endregion #region 定义一个方法，获取图标的索引 private int GetImageIndex(TouchButtonType buttonType) { return (int)buttonType; } #endregion #region 根据索引再获取它的值 private TouchButtonType GetButtonType(int imageIndex) { return (TouchButtonType)imageIndex; } #endregion #region 实现子节点上移的方法 private void SetUPTree(TreeNode node) { //如果没有子节点，上面也没有同级的节点 if (node == null) { MessageBox.Show("请选择您要操作的按键", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } if (node.PrevNode == null) { MessageBox.Show("已经是第一个了，不能移动。", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } TreeNode newNode = (TreeNode)node.Clone();//复制树节点和以此树节点为根的整个子树 if (node.Parent != null)//父节点不为空 { node.Parent.Nodes.Insert(node.PrevNode.Index, newNode); } else { node.TreeView.Nodes.Insert(node.PrevNode.Index, newNode); } //添加一个新的节点，这个新的节点时复制的 node.TreeView.SelectedNode = newNode; this._FunMenuTree.Nodes.Remove(node); } #endregion #region 实现节点下移的方法 private void SetDownTree(TreeNode node) { //如果没有子节点，上面也没有同级的节点 if (node == null) { MessageBox.Show("请选择您要操作的按键", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } if (node.NextNode == null) { MessageBox.Show("已经是最后一个了，不能移动。", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } TreeNode newNode = (TreeNode)node.Clone();//复制树节点和以此树节点为根的整个子树 if (node.Parent != null)//父节点不为空 { node.Parent.Nodes.Insert(node.NextNode.Index + 1, newNode); } else { node.TreeView.Nodes.Insert(node.NextNode.Index + 1, newNode); } node.TreeView.SelectedNode = newNode; this._FunMenuTree.Nodes.Remove(node); } #endregion #region 点击“上移”按钮，触发的事件 private void _RemoveUP_Click(object sender, EventArgs e) { SetUPTree(this._FunMenuTree.SelectedNode); } #endregion #region 点击"下移"按钮，触发的事件 private void _RemoveDown_Click(object sender, EventArgs e) { //调用下移的方法 SetDownTree(this._FunMenuTree.SelectedNode); } #endregion #region 点击"添加根节点"按钮，触发的事件 private void _AddRootButton_Click(object sender, EventArgs e) { var form = new AddTreeForm(TreeOperation.RootTree); //给事件追加一个方法 form.ReturnAddRoot += new EventHandler(form_ReturnAdd); //模式窗体打开子窗体 form.ShowDialog(); } #endregion #region 具体实现添加根节点的方法 void form_ReturnAdd(object sender, EventArgs e) { AddTreeForm form = sender as AddTreeForm; TreeNode node = new TreeNode(); node.Text = form.TreeNodeName; node.ImageIndex = GetImageIndex(form.ButtonType); node.SelectedImageIndex = GetImageIndex(form.ButtonType); this._FunMenuTree.Nodes.Add(node); this._FunMenuTree.SelectedNode = node; form.Close(); } #endregion #region 点击"添加子节点"触发的事件 private void _AddChidButton_Click(object sender, EventArgs e) { TreeNode node = _FunMenuTree.SelectedNode; if (node == null) { MessageBox.Show("请选择您要操作的按键", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } //当它选中的是菜单按钮，可以添加子节点 if (GetButtonType(_FunMenuTree.SelectedNode.ImageIndex) == TouchButtonType.Menu) { var form = new AddTreeForm(TreeOperation.ChildTree); //给事件追加一个方法 form.ReturnAddChild += new EventHandler(form_ReturnAddChild); form.ShowDialog(); } } #endregion #region 具体实现添加子节点的方法 void form_ReturnAddChild(object sender, EventArgs e) { AddTreeForm form = sender as AddTreeForm; var node = new TreeNode(); node.Text = form.TreeNodeName; //添加的节点的名称 node.ImageIndex = GetImageIndex(form.ButtonType); //图片索引 node.SelectedImageIndex = GetImageIndex(form.ButtonType);//当前选中节点的索引==图片索引 //给树的当前选中的节点添加子节点 this._FunMenuTree.SelectedNode.Nodes.Add(node); //添加子节点后，树的当前选中节点的子节点都展开 this._FunMenuTree.SelectedNode.Expand(); this._FunMenuTree.SelectedNode = node; form.Close(); } #endregion #region 点击修改按钮，触发的事件 private void _UpdateButton_Click(object sender, EventArgs e) { //获取当前选中的节点，如果为空 TreeNode node = _FunMenuTree.SelectedNode; if (node == null) { MessageBox.Show("请选择您要操作的按键", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } //实例化子窗体，同时把枚举类型修改的操作传给它 var form = new AddTreeForm(TreeOperation.EditTree); form.Initialize(node.Text, GetButtonType(node.ImageIndex)); //给事件挂接一个方法 form.ReturnEditTree += new EventHandler(form_ReturnEditTree); //子窗体以模式窗体打开 form.ShowDialog(); } #endregion #region 具体实现修改的方法 void form_ReturnEditTree(object sender, EventArgs e) { AddTreeForm form = sender as AddTreeForm; TreeNode node = _FunMenuTree.SelectedNode; if (node.Nodes.Count > 0 && form.ButtonType != TouchButtonType.Menu) { MessageBox.Show("只有菜单按键能有子按键", "按键菜单设置", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); return; } //获取到了选中节点的名称，并放在封装的属性中 node.Text = form.TreeNodeName; //获取图片索引 node.ImageIndex = GetImageIndex(form.ButtonType); //图片索引 node.SelectedImageIndex = GetImageIndex(form.ButtonType); _AddChidButton.Enabled = form.ButtonType == TouchButtonType.Menu; form.Close(); } #endregion #region 点击"删除"按钮触发的事件 private void _DelButton_Click(object sender, EventArgs e) { if (this._FunMenuTree.SelectedNode != null) { this._FunMenuTree.SelectedNode.Remove(); } } #endregion #region 点击"确定"按钮 private void _OkButton_Click(object sender, EventArgs e) { this.DialogResult = System.Windows.Forms.DialogResult.OK; } #endregion #region 点击取消按钮触发的事件 private void _CancelButton_Click(object sender, EventArgs e) { Close(); } #endregion /// <summary> /// 加载功能按键菜单树 /// </summary> /// <param name="_TouchButtons"></param> public void InitFuncMenuTree(List<ITouchButton> _TouchButtons) { foreach (ITouchButton btn in _TouchButtons) { TreeNode node = new TreeNode(); node.Text = (btn as ITouchComponent).TouchTheme.Text; node.ImageIndex = GetImageIndex(btn.ButtonType); node.SelectedImageIndex = GetImageIndex(btn.ButtonType); switch (btn.ButtonType) { case TouchButtonType.Menu: AddChildNodes(node, btn as MenuButton); _FunMenuTree.Nodes.Add(node); break; default: _FunMenuTree.Nodes.Add(node); break; } } } /// <summary> /// 添加菜单按键子节点 /// </summary> /// <param name="parentNode"></param> /// <param name="menuButton"></param> private void AddChildNodes(TreeNode parentNode, MenuButton menuButton) { foreach (ITouchButton btn in menuButton.ChildButtons) { TreeNode node = new TreeNode(); node.Text = (btn as ITouchComponent).TouchTheme.Text; node.ImageIndex = GetImageIndex(btn.ButtonType); node.SelectedImageIndex = GetImageIndex(btn.ButtonType); switch (btn.ButtonType) { case TouchButtonType.Menu: AddChildNodes(node, btn as MenuButton); parentNode.Nodes.Add(node); break; default: parentNode.Nodes.Add(node); break; } } } /// <summary> /// 获取功能按键菜单树 /// </summary> /// <returns></returns> public List<ITouchButton> GetFuncMenuTree() { List<ITouchButton> _TouchButtons = new List<ITouchButton>(); foreach (TreeNode node in _FunMenuTree.Nodes) { switch (GetButtonType(node.ImageIndex)) { case TouchButtonType.Ticket: TicketButton ticket = new TicketButton(); ticket.TouchTheme.Text = node.Text; _TouchButtons.Add(ticket); break; case TouchButtonType.Function: FunctionButton function = new FunctionButton(); function.TouchTheme.Text = node.Text; _TouchButtons.Add(function); break; case TouchButtonType.Navigate: NavigateButton navigate = new NavigateButton(); navigate.TouchTheme.Text = node.Text; _TouchButtons.Add(navigate); break; case TouchButtonType.Menu: MenuButton menu = new MenuButton(); menu.TouchTheme.Text = node.Text; AddChildButtons(node, menu); _TouchButtons.Add(menu); break; default : break; } } return _TouchButtons; } /// <summary> /// 菜单按键添加子按键 /// </summary> /// <param name="parentNode"></param> /// <param name="menuButton"></param> private void AddChildButtons(TreeNode parentNode, MenuButton menuButton) { foreach (TreeNode childNode in parentNode.Nodes) { switch (GetButtonType(childNode.ImageIndex)) { case TouchButtonType.Ticket: TicketButton ticket = new TicketButton(); ticket.TouchTheme.Text = childNode.Text; menuButton.ChildButtons.Add(ticket); break; case TouchButtonType.Function: FunctionButton function = new FunctionButton(); function.TouchTheme.Text = childNode.Text; menuButton.ChildButtons.Add(function); break; case TouchButtonType.Navigate: NavigateButton navigate = new NavigateButton(); navigate.TouchTheme.Text = childNode.Text; menuButton.ChildButtons.Add(navigate); break; case TouchButtonType.Menu: MenuButton menu = new MenuButton(); menu.TouchTheme.Text = childNode.Text; AddChildButtons(childNode, menu); menuButton.ChildButtons.Add(menu); break; default: break; } } } } 

    以上的代码功能是我在平安的第一个任务，我是在同事的帮助下完成的，做完以后还是觉得学到了些东西的，原来能力就是这样一点一点储蓄起来的，继续加油！。。。。

本文链接地址为：http://blog.csdn.net/evonne520/archive/2011/07/01/6579640.aspx