树形checkbox的选择(用JS实现)
ASPX页面:
<%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls, Version=1.0.2.226, Culture=neutral, PublicKeyToken=31bf3856ad364e35" %>
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="webapp2.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" ><HTML> <HEAD> <title>WebForm1</title> <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR"> <meta content="C#" name="CODE_LANGUAGE"> <meta content="JavaScript" name="vs_defaultClientScript"> <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema"> <script language="javascript">
//选择所有下级节点 function tree_onClick(tree)
{
var node = tree.getTreeNode(tree.clickedNodeIndex); var isCheck = node.getAttribute("checked"); setNodes(node,isCheck);
} function setNodes(node,isCheck) { var nodes = node.getChildren(); var node; for(var i=0;i<nodes.length;i++) { node = nodes[i]; node.setAttribute("checked",isCheck); setNodes(node,isCheck); } } //取得所有选中节点的ID值,数祖返回 function getNodes(tv) { var a = getTvNodes(tv.getChildren()); alert(a); } function getTvNodes(nodes) { var matches = []; var node,isCheck; for(var i=0;i<nodes.length;i++) { node = nodes[i]; isCheck = node.getAttribute("checked"); if(isCheck) { matches.push(node.getAttribute("id")); } matches = matches.concat(getTvNodes(node.getChildren())); } return matches } function hasChild(node){return node.getChildren().lenght>0;}
</script> </HEAD> <body bgColor="#cccccc"> <form id="Form1" method="post" runat="server"> <FONT face="宋体"> <P> <iewc:TreeView id="tv" runat="server" ExpandedImageUrl="images/folderOpen.gif" ImageUrl="images/folderClose.gif" ShowToolTip="False" SelectExpands="True"></iewc:TreeView><BR> <asp:Button id="Button1" runat="server" Text="Button"></asp:Button><INPUT id="hidValues" type="hidden" name="Hidden1" runat="server"> </P> </FONT> <input type="button" value="go" onclick="getNodes(document.all.tv)" </form> </body></HTML>CS:
//部分this.tv.Attributes.Add("oncheck","tree_onClick(this)");this.FillNodes(this.tv.Nodes,0);private void FillNodes(TreeNodeCollection nodes,int ID) { DataSet ds = dal.DataAdapter(CommandType.Text, "SELECT * FROM Tree WHERE ParentID=" +ID.ToString(), "tbl0" ,null); foreach(DataRow dataRow in ds.Tables[0].Rows) { TreeNode node = new TreeNode(); int nodeID = (int)dataRow[0]; bool hasChild = this.HasChild(nodeID); node.ID = nodeID.ToString(); node.Text = dataRow[1].ToString(); node.CheckBox = true; if(!hasChild) { node.NavigateUrl = "http://www.google.com"; } nodes.Add(node); if(hasChild) { this.FillNodes(node.Nodes,nodeID); } } }posted on 2004-08-09 16:35 HelloSnoopy 阅读(1097) 评论(0) 编辑 收藏 举报
