treeview有关的几个问题？

所有的节点都有checkbox ,是父亲的checkbox 被选中。

这个问题很老了，你用的是.net中的，treeview 还是自己用js写的tree阿？

第二个问题，不刷新可以用icallbackhandle 或者用ajax

.net2005中的
<asp:TreeView ID="RoleTreeView" runat="server" ShowCheckBoxes="All" onclick="javascript:OnTreeNodeChecked()" AutoGenerateDataBindings="false" >
</asp:TreeView>
第一个问题解决了。
只剩下第二个问题。
回四楼的根本就没有任何后台事件，用ajax做什么，只是想点击节点的时候让页面没有任何反应。

JS文件:var parentNodeCount = 0;
var nodeCount = 0;function onParentNodeImageClick(node) {
    var divNode = document.getElementById(node.name.replace("parentNodeImage","parentNodeDiv"));
var imageNode = node; if (divNode.style.display == "none"){
imageNode.src = "minus.png";
divNode.style.display = "";
}
else {
imageNode.src = "plus.png";
divNode.style.display = "none";
}
}前台代码:
<link href="tree.css" rel="stylesheet" type="text/css" />
<script src="tree.js" type="text/javascript"></script><title>TreeView Example</title></head><body>
<div id="treeview"></div>
<script language="javascript">
addExpandCollapseAll(); addNode("WickedOrange.com","http://www.wickedorange.com","mainFrame"); startParentNode("Search Engines");
addNode("Google","http://www.google.com","mainFrame");
addNode("Yahoo","http://www.yahoo.com","mainFrame");
endParentNode(); startParentNode("Dev Sites");
   addNode("CodeProject","http://www.codeproject.com","mainFrame");
addNode("MSDN","http://www.msdn.com","mainFrame");
      startParentNode("Dev Sites");
   addNode("CodeProject","http://www.codeproject.com","mainFrame");
addNode("MSDN","http://www.msdn.com","mainFrame");
      startParentNode("Dev Sites");
   addNode("CodeProject","http://www.codeproject.com","mainFrame");
addNode("MSDN","http://www.msdn.com","mainFrame");
endParentNode();
endParentNode();
endParentNode();</script>
function onParentNodeTextClick(node) {
    var divNode = document.getElementById(node.name.replace("parentNodeText","parentNodeDiv"));
    var imageNode = document.getElementsByName(node.name.replace("parentNodeText","parentNodeImage"))[0]; if (divNode.style.display == 'none') {
imageNode.src = "minus.png";
divNode.style.display = '';
}
else {
imageNode.src = "plus.png";
divNode.style.display = 'none';
}
}function onNodeTextClick(node) {
    var imageNode = document.getElementsByName(node.name.replace("nodeText","nodeImage"))[0];
    setSelectedNode(imageNode);
}
function onNodeImageClick(node, url, target){
    var imageNode = node
    setSelectedNode(imageNode);
}function setSelectedNode(imageNode){
    for (index = 0; index < this.nodeCount; index++) {
document.getElementsByName("nodeImage" + index)[0].src = "page.png";
    }
    imageNode.src = "pageSelected.png";
}
function expandAll(){
for (index = 0; index < this.parentNodeCount; index++) {
document.getElementById("parentNodeDiv" + index).style.display = "";
        document.getElementsByName("parentNodeImage" + index)[0].src = "minus.png";
}
}
function collapseAll(){
for (index = 0; index < this.parentNodeCount; index++) {
document.getElementById("parentNodeDiv" + index).style.display = "none";
        document.getElementsByName("parentNodeImage" + index)[0].src = "plus.png";
}
}function startParentNode(text){
document.write('<table border="0" cellpadding="1" cellspacing="0">');
document.write('  <tr>');
document.write('    <td><img src="plus.png" name="parentNodeImage' + parentNodeCount + '" onclick="onParentNodeImageClick(this)" style="cursor:pointer;"/></td>');
document.write('    <td><a class="parentTreeNode" name="parentNodeText' + parentNodeCount + '" onclick="onParentNodeTextClick(this);" style="cursor:pointer;">');
document.write(text);
document.write('</a>');
document.write('  </td>');
document.write('  </tr>');
document.write('  <tr>');
document.write('    <td></td>');
document.write(' <td><DIV id="parentNodeDiv' + parentNodeCount + '" style="display:none">');
    this.parentNodeCount = this.parentNodeCount + 1;
}
function endParentNode(){
document.write('</DIV></td>');
document.write('  </tr>');
document.write('</table>');
}
function addNode(text, url, target){
document.write('<table border="0" cellpadding="1" cellspacing="0">');
document.write('  <tr>');
document.write(' <td>');
    document.write('<a href="' + url + '" target="' + target + '" onfocus="this.hideFocus=true;" style="outline-style:none;">');
document.write('<img src="page.png" border="0" name="nodeImage' + this.nodeCount + '" onclick="onNodeImageClick(this);" />');
    document.write('</a>');
document.write(' </td>');
document.write('    <td><a name="nodeText' + this.nodeCount + '" onclick="onNodeTextClick(this);" href="' + url + '" target="' + target + '" class="normalTreeNode" onfocus="this.hideFocus=true;" style="outline-style:none;">' + text + '</a></td>');
document.write('  </tr>');
document.write('</table>');
    this.nodeCount = this.nodeCount + 1;
}
function addExpandCollapseAll(){
document.write('<table width="100%" border="0">');
document.write('  <tr>');
document.write('    <td align="right" width="50%"><a onclick="expandAll();" class="expandCollapse" style="cursor:pointer;">Expand All</a></td>');
document.write('    <td alight="left" width="50%"><a onclick="collapseAll();" class="expandCollapse" style="cursor:pointer;">Collapse All</a></td>');
document.write('  </tr>');
document.write('</table>');
}

cs:
    protected void Page_Load(object sender, EventArgs e)
    {
        this.TreeView1.Attributes.Add("onclick", "CheckEvent()");
    }
js:
      <script language="javascript">
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);
    }
}
    </script>
把 js这部分放在aspx中，就可以了。刚才我还以为你会在后台进行操作呢 ^-^

楼上的不行有错误，而且我已经用onclick()调用一个脚本解决第一个问题了！
有没有什么办法让节点的文字不能点击！

现在还想实现一个节点的checkbox始终是选中的状态不可更改怎么实现！

调试易

treeview有关的几个问题？

解决方案 »