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前端页面js：就是这么简单暴力

///获取combotree的方法

function GetTree() {

$("#tree").combotree({

width: 175,

url: '/OrganizationManager/Permission/GetTree',

valueField: 'id',

textField: 'text',

editable: false

});

}

控制器以及数据访问层：

public JsonResult GetTree()

{

string parentNodeId = Request["id"] ?? null;//easyui 会每展开一个节点，往后端传一个·id

if (string.IsNullOrEmpty(parentNodeId))

{

parentNodeId = "0";

}

List<Model.RunUI.TreeModule> Toptree = bllper.GetSubNodes(parentNodeId);

return Json(Toptree, JsonRequestBehavior.AllowGet);

}

/// <summary>

/// * 获取菜单的树的方法*

/// </summary>

/// <param name="parentNodeId"></param>

/// <returns></returns>

public List<Model.RunUI.TreeModule> GetSubNodes(string parentNodeId)

{

string sql = "select * from Per_Module ";

DataTable dt = DbHelperSQL.Query(sql).Tables[0];

List<Model.RunUI.TreeModule> Tree = new List<Model.RunUI.TreeModule>();

Model.RunUI.TreeModule TM = null;

if (dt != null && dt.Rows.Count > 0)

{

DataRow[] rows = dt.Select("ParentModuleID ='" + parentNodeId + "'");

foreach (DataRow item in rows)

{

string id = item["ModuleID"].ToString();

string text = item["Name"].ToString();

TM = new TreeModule();

DataRow[] IsNulRows = dt.Select("ParentModuleID ='" + id + "'");

if (IsNulRows.Length > 0)

{

TM.state = "closed";//这个很关键，此节点为closed状态，才可以展开，才能往后台传你点击的id  看到Combotree的异步加载Demo，发现treegrid_data.json中 state="closed" 属性能把点击展开的节点Id传到后台中

}

TM.id = id;

TM.text = text;

Tree.Add(TM);

}

}

return Tree;

}

 

model：类：

public class TreeModule

{

public string id { get; set; }

public string text { get; set; }

public string state { get; set; }

}

就是这么简单暴力

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