例1
代码如下 | 复制代码 |
function public_GetParentByTagName(element, tagName) { var parent = element.parentNode; var upperTagName = tagName.toUpperCase(); //如果这个元素还不是想要的tag就继续上溯 while (parent && (parent.tagName.toUpperCase() != upperTagName)) { parent = parent.parentNode ? parent.parentNode : parent.parentElement; } return parent; } //设置节点的父节点Cheched——该节点可访问,则他的父节点也必能访问 function setParentChecked(objNode) { var objParentDiv = public_GetParentByTagName(objNode,"div"); if(objParentDiv==null || objParentDiv == "undefined") { return; } var objID = objParentDiv.getAttribute("ID"); objID = objID.substring(0,objID.indexOf("Nodes")); objID = objID+"CheckBox"; var objParentCheckBox = document.getElementById(objID); if(objParentCheckBox==null || objParentCheckBox == "undefined") { return; } if(objParentCheckBox.tagName!="INPUT" && objParentCheckBox.type == "checkbox") return; objParentCheckBox.checked = true; setParentChecked(objParentCheckBox); } //设置节点的子节点uncheched——该节点不可访问,则他的子节点也不能访问 function setChildUnChecked(divID) { var objchild = divID.children; var count = objchild.length; for(var i=0;i<objchild.length;i++) { var tempObj = objchild[i]; if(tempObj.tagName=="INPUT" && tempObj.type == "checkbox") { tempObj.checked = false; } setChildUnChecked(tempObj); } } //设置节点的子节点cheched——该节点可以访问,则他的子节点也都能访问 function setChildChecked(divID) { var objchild = divID.children; var count = objchild.length; for(var i=0;i<objchild.length;i++) { var tempObj = objchild[i]; if(tempObj.tagName=="INPUT" && tempObj.type == "checkbox") { tempObj.checked = true; } setChildChecked(tempObj); } } //触发事件 function CheckEvent() { var objNode = event.srcElement; if(objNode.tagName!="INPUT" || objNode.type!="checkbox") return; if(objNode.checked==true) { setParentChecked(objNode); var objID = objNode.getAttribute("ID"); var objID = objID.substring(0,objID.indexOf("CheckBox")); var objParentDiv = document.getElementById(objID+"Nodes"); if(objParentDiv==null || objParentDiv == "undefined") { return; } setChildChecked(objParentDiv); } else { var objID = objNode.getAttribute("ID"); var objID = objID.substring(0,objID.indexOf("CheckBox")); var objParentDiv = document.getElementById(objID+"Nodes"); if(objParentDiv==null || objParentDiv == "undefined") { return; } setChildUnChecked(objParentDiv); } } 服务器端控件操作 this.tvPrivilege.Attributes.Add("OnClick", "CheckEvent()"); |
例2
TreeView 控件无刷新
3、tree.aspx代码如下:
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代码如下 | 复制代码 |
<%@ Page language="c#" Codebehind="createTree.aspx.cs" AutoEventWireup="false" Inherits="treeviewDemo.createTree" %> <%@ Register TagPrefix="iewc" Namespace="Microsoft.Web.UI.WebControls" Assembly="Microsoft.Web.UI.WebControls" %> <%@ Register TagPrefix="ajax" Namespace="MagicAjax.UI.Controls" Assembly="MagicAjax" %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > <HTML> <HEAD> <title>createTree</title> <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1"> <meta name="CODE_LANGUAGE" Content="C#"> <meta name="vs_defaultClientScript" content="JavaScript"> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"> </HEAD> <body MS_POSITIONING="GridLayout"> <form id="Form1" runat="server" method="post"> 查询动态数据库信息,并分类显示。 <ajax:AjaxPanel id="panel1" runat="server" Width="584px" Height="216px" style="Z-INDEX: 101; LEFT: 64px; POSITION: absolute; TOP: 56px"> <iewc:TreeView id="TreeView1" runat="server" AutoPostBack="True" SelectExpands="True"></iewc:TreeView> <asp:TextBox id="tbNode" Runat="server"></asp:TextBox> </ajax:AjaxPanel> </form> </body> </HTML> |
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4、*.cs代码如下:
代码如下 | 复制代码 |
using System; using System.Collections; using System.ComponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using Microsoft.Web.UI.WebControls; using MagicAjax; namespace treeviewDemo #region Web 窗体设计器生成的代码 } return data; // 从DataSet中取数据建树 foreach(DataRow row in rows) private void TreeView1_SelectedIndexChange(object sender, Microsoft.Web.UI.WebControls.TreeViewSelectEventArgs e) |
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到目前为止,TreeView加载完毕!
5、运行后会发现一个问题:
**PostBack时会丧失树的效果;查看错误是无法访问 about:blank/webctrl_client/1_0/.htc
该问题解决如下:
在web.config里 添加
代码如下 | 复制代码 |
<configSections> <section name="MicrosoftWebControls" type="System.Configuration.NameValueSectionHandler, System, System.Configuration.NameValueSectionHandler, System, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" /> </configSections> <MicrosoftWebControls> <add key="CommonFiles" value="/webctrl_client/1_0" /> </MicrosoftWebControls> |
可以修改调用树的htc的位置
把以上配置中的
代码如下 | 复制代码 |
/webctrl_client/1_0 |
改为
网址全称
代码如下 | 复制代码 |
http://localhost/webctrl_client/1_0 |