jstree的数据后台生成
jstree的数据后台生成
jstree在前台的HTML格式如:
<div id="demo1" class="demo" style="height:100px;">
<ul>
<li id="phtml_1">
<a href="#">Root node 1</a>
<ul>
<li id="phtml_2">
<a href="#">Child node 1</a>
</li>
<li id="phtml_3">
<a href="#">Child node 2</a>
</li>
</ul>
</li>
<li id="phtml_4">
<a href="#">Root node 2</a>
</li>
</ul>
</div>
后台生成这种格式的数据:(无限级,递归)
private string GetTreeString(int pid)
{
IEnumerable<Model.TreesModel> TreesModelList= TreesBLL.GetList();
return "<ul>" + AddTreeNodeString(0, "所有栏目", customClassList) + "</ul>";
}
private string AddTreeNodeString(int nodeId, string nodeName, IEnumerable<Model.TreesModel> list)
{
string nodeString = "";
//找出List 中以nodeId为ParentID的节点
IEnumerable<Model.TreesModel> childNodes = list.Where(i => i.PId== nodeId).OrderBy(i => i.SortNumber);
int nodeCount = childNodes.Count();
if (nodeCount == 0)
{
//如果没找到子节点,返回<li></li>
nodeString = "<li><a href='#'>" + nodeName + "</a></li>";
}
else
{
//如果找到子节点,增加<ul>
nodeString = "<li><a href='#'>" + nodeName + "</a><ul>";
//按子节点循环,每次掉自己增加一个节点的nodeString
foreach (var item in childNodes)
{
nodeString += AddTreeNodeString(item.Id, item.Name, list);
}
//增加</ul>
nodeString += "</ul></li>";
}
return nodeString;
}