這段代碼為了使用?TreeNodeCheckChanged 事件，會有回刷新的效果；

不喜歡的可查看改進版，利用js控制選擇操作，無界面刷新，?“http://www.cnblogs.com/GoCircle/p/6231985.html”；

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前臺代碼

<style>.tn td {height: 18px;display: flex;}.tn tr {display: flex;}.tn a {line-height: 18px;}</style><script type="text/javascript">function postBackByObject() {var o = window.event.srcElement;if (o.type === "checkbox") {//第一個參數寫up_action的ID，否則就是整個頁面刷了 __doPostBack("up_action", "");}}</script><asp:UpdatePanel ID="up_action" runat="server"><ContentTemplate><asp:TreeView ID="tv_roleaction" runat="server" ShowCheckBoxes="All" CssClass="tn" OnTreeNodeCheckChanged="tv_roleaction_TreeNodeCheckChanged" ShowLines="True" CollapseImageToolTip="折疊"></asp:TreeView></ContentTemplate></asp:UpdatePanel>

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后臺

注：由于頁面加載問題，請在關閉或保存頁面信息后重新new一下兩個私有變量

private static SysRoleEntity role = new SysRoleEntity();private static List<object> roleaction = new List<object>();protected void Page_Load(object sender, EventArgs e){if (!IsPostBack){//調用遞歸函數，完成樹形結構的生成AddTree(0, (TreeNode)null);tv_roleaction.Attributes.Add("onclick", "postBackByObject()");}}//遞歸添加樹的節點public void AddTree(int ParentID, TreeNode pNode){DataView dvTree = new DataView(SysActionBLL.GetInstance().GetList(""));//過濾ParentID,得到當前的所有子節點dvTree.RowFilter = "[FPARENTACTIONID] = " + ParentID;foreach (DataRowView Row in dvTree){TreeNode Node = new TreeNode();Node.Value = Row["FACTIONID"].ToString();Node.Expanded = true;if (pNode == null){ //添加根節點Node.Text = "<font style='color:gray'>" + Row["FACTIONNAME"].ToString() + "</font>";tv_roleaction.Nodes.Add(Node);}else{ //?添加當前節點的子節點Node.Text = "<font style='color:gray'>" + Row["FACTIONNAME"].ToString() + "</font>";pNode.ChildNodes.Add(Node);}//判斷當前角色是否擁有該權限if (roleaction.Count > 0 && roleaction.Find(p => p.ToString() == Row["FACTIONID"].ToString()) != null){Node.Checked = true;Node.Text = Regex.Replace(Node.Text, @"gray", @"green");}AddTree(Int32.Parse(Row["FACTIONID"].ToString()), Node); //再次遞歸 }}/// <summary>/// 節點的選中事件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>protected void tv_roleaction_TreeNodeCheckChanged(object sender, TreeNodeEventArgs e){//設置該節點的屬性 變量roleaction的修改if (e.Node.Checked){roleaction.Add(e.Node.Value);e.Node.Text = Regex.Replace(e.Node.Text, @"gray", @"green");}else{roleaction.Remove(e.Node.Value);e.Node.Text = Regex.Replace(e.Node.Text, @"green", @"gray");}SetChildChecked(e.Node);SetParentChecked(e.Node);}//設置該結點的子節點private void SetChildChecked(TreeNode parentNode){foreach (TreeNode node in parentNode.ChildNodes){//子節點是否選并改變顏色node.Checked = parentNode.Checked;if (node.Checked){roleaction.Add(node.Value);node.Text = Regex.Replace(node.Text, @"gray", @"green");}else{roleaction.Remove(node.Value);node.Text = Regex.Replace(node.Text, @"green", @"gray");}if (node.ChildNodes.Count > 0){SetChildChecked(node);}}}//設置該結點的父節點private void SetParentChecked(TreeNode childNode){if (childNode.Parent != null){var ifnochecked = true;//檢查父節點下是否有選中的節點foreach (TreeNode node in childNode.Parent.ChildNodes){if (node.Checked){if (roleaction.Where(p => p.ToString().Equals(childNode.Parent.Value)).Count() == 0){roleaction.Add(childNode.Parent.Value);}ifnochecked = false;childNode.Parent.Checked = true;childNode.Parent.Text = Regex.Replace(childNode.Parent.Text, @"gray", @"green");break;}}if (ifnochecked){roleaction.Remove(childNode.Parent.Value);childNode.Parent.Checked = false;childNode.Parent.Text = Regex.Replace(childNode.Parent.Text, @"green", @"gray");}SetParentChecked(childNode.Parent);}}

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轉載于:https://www.cnblogs.com/GoCircle/p/6203095.html

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