public static List<TC_DictionaryInfo> DInfo = new List<TC_DictionaryInfo>();
/// <summary>
/// TreeView視圖
/// </summary>
/// <returns></returns>
public ActionResult May(string TypeCode,int parentId)
{
ViewBag.TypeCode = TypeCode;
ViewBag.ParentId = parentId;
return View();
}
[HttpPost]
public ActionResult GetTreeData(string TypeCode,int parentId)
{
List<TC_DictionaryInfo> DInfo = dbll.GetModelList("TypeCode="+TypeCode);
return Json(GetChildNodes(0,new NodeModel(){}, DInfo).nodes);
}
///<summary>
/// GetChildNodes方法，此方法使用遞歸
/// </summary>
/// <param name="parentId"></param>
/// <returns></returns>
public NodeModel GetChildNodes(int parentId,NodeModel childnodestr,List<TC_DictionaryInfo> DInfo)
{
List<TC_DictionaryInfo> DictionaryList = DInfo.Where(e => Convert.ToInt32(e.ParentId) == parentId).ToList();
for (int i = 0; i < DictionaryList.Count; i++)
{
NodeModel NewNode = new NodeModel();
NewNode.DicId = DictionaryList[i].DicId;
NewNode.text = DictionaryList[i].DICName;
NewNode.ParentId = DictionaryList[i].ParentId;
childnodestr.nodes.Add(NewNode);
GetChildNodes(NewNode.DicId, NewNode, DInfo);
}
return childnodestr;
}

<script type="text/javascript">
var typecode = @ViewBag.TypeCode;
var parentid = @ViewBag.ParentId;
$(function() {
$.ajax({
type: 'Post',
url: '/Type/GetTreeData',
data:{
TypeCode:typecode,
ParentId:parentid,
},
//data: para,
dataType: 'json',
async: false,
success: function (data) {
var defaultData = eval(data);
//var defaultData = data;
$('#treeview4').treeview({
color: "#428bca",
data: defaultData
});
},
error: function (err) {
alert('不好意思，數(shù)據(jù)忘記帶上了。。。');
}
});
</scipt>

public ActionResult May(string TypeCode,int parentId)
{
ViewBag.TypeCode = TypeCode;
ViewBag.ParentId = parentId;
return View();
} 
public ActionResult GetTreeData()
{
//創(chuàng)建jsondata對象
StringBuilder jsonData = new StringBuilder();
//拼接json字符串 開始{
jsonData.Append("[");
//調(diào)用GetChildNodes方法，默認(rèn)傳參試為0（0表示根節(jié)點(diǎn)菜單選項(xiàng)）
jsonData.Append(GetChildNodes(0));
//閉合Node子類數(shù)組 ]
jsonData.Append("]");
//返回json字符串
return Json(jsonData.ToString());
}
/// <summary>
/// GetChildNodes方法，此方法使用遞歸
/// </summary>
/// <param name = "parentId" ></ param >
/// < returns ></ returns >
public string GetChildNodes(int parentId)
{
//為DInfo賦值（DInfo承載頁面所需的值（間接將值傳給頁面）），查詢所有的數(shù)據(jù)
List<TC_DictionaryInfo> DInfo = dbll.GetModelList("");
//創(chuàng)建ChiidNodeStr變量
StringBuilder ChildNodeStr = new StringBuilder();
//查詢符合條件的數(shù)據(jù)（ParentId=0），DictionaryList接收數(shù)據(jù)
List<TC_DictionaryInfo> DictionaryList = DInfo.Where(e => Convert.ToInt32(e.ParentId) == parentId).ToList();
//循環(huán)DictionaryList為TreeView所需數(shù)據(jù)分層級（即子類、父類等節(jié)點(diǎn)分開）
for (int i = 0; i < DictionaryList.Count; i++)
{
//Nodes數(shù)組開始 {
ChildNodeStr.Append("{");
//實(shí)例化NewNode
NodeModel NewNode = new NodeModel();
//分別為字段賦值
NewNode.DicId = DictionaryList[i].DicId;
NewNode.text = DictionaryList[i].DICName;
NewNode.ParentId = DictionaryList[i].ParentId;
//將要顯示的字段拼接
ChildNodeStr.Append("text:'" + NewNode.text + "',");
//超鏈接地址（此處設(shè)置為空鏈接#）
ChildNodeStr.Append("href:'#parent1',");
ChildNodeStr.Append("tags:['0']");
//拼接完畢子類分層，去掉最后多余的符號（,）
string ChildNodes = GetChildNodes(NewNode.DicId).Trim(',');
//判斷父類下是否有子類，如果有子類放到Nodes里，如果沒有不讓他顯示為數(shù)組形式“[]”
if (ChildNodes != string.Empty)
{
//拼接Json字符串格式
ChildNodeStr.Append(",");
ChildNodeStr.Append("nodes:[");
ChildNodeStr.Append(ChildNodes);
ChildNodeStr.Append("]");
}
//結(jié)尾加上}, 
ChildNodeStr.Append("},");
}
//返回Json字符串，并將,去掉
return ChildNodeStr.ToString().Trim(',');
}

var defaultData = eval(data);