一、后台数据

1.定义ComboTree类

根据控件的属性来写

public partial class ComboTree    {        public string id { get; set; }        public string text { get; set; }        public string iconCls { get; set; }        public string state { get; set; }        public string parentid { get; set; }        public string attributes { get; set; }        public string children { get; set; }     }

 

2.扩展ComboTree方法

public partial class ComboTree    {        public string GetTreeString(List
     
       treeList)        {            StringBuilder sb = new StringBuilder();            sb.Append("[");            List
      
        parenTrees = treeList.Where(q => q.parentid == "0").ToList();   //赋权限每个角色都必须有父节点的权限，否则一个都不输出了            if (parenTrees.Count > 0)            {                foreach (var parentTree in parenTrees)                {                    sb.Append("{\"id\":\"" + parentTree.id + "\",\"text\":\"" + parentTree.text + "\",\"iconCls\":\"" + parentTree.iconCls + "\",\"children\":[");                    sb.Append(GetChildString(treeList, parentTree.id));                }                sb.Remove(sb.Length - 1, 1);                sb.Append("]");            }            else            {                sb.Append("]");            }            return sb.ToString();        }        public string GetComboTreeString(List
       
         comboTrees)        {            string sb = "[";            comboTrees.ForEach(f => sb += "{\"id\":\"" + f.id + "\",\"text\":\"" + f.text + "\",\"iconCls\":\"" + f.iconCls + "\"},");            sb = sb.Trim(",".ToCharArray());            sb += "]";            return sb;        }        private string GetChildString(List
        
          treeList, string parentId)        {            StringBuilder sb = new StringBuilder();            List
         
           childrenTrees = treeList.Where(q => q.parentid == parentId).ToList();            if (childrenTrees.Count > 0)            {                foreach (var childrenTree in childrenTrees)                {                    List
          
            childrens = treeList.Where(q => q.parentid == parentId).ToList();//childrenTreedt.Select(string.Format("parentid={0}", r_list[j]["id"].ToString()))); if (childrens.Count > 0) { sb.Append("{\"id\":\"" + childrenTree.id + "\",\"text\":\"" + childrenTree.text + "\",\"iconCls\":\"" + childrenTree.iconCls + "\",\"children\":["); sb.Append(GetChildString(treeList, childrenTree.id)); } else { sb.Append("{\"id\":\"" + childrenTree.id + "\",\"text\":\"" + childrenTree.text + "\",\"iconCls\":\"" + childrenTree.iconCls + "\",\"attributes\":{\"url\":\"" + childrenTree.attributes + "\"}},"); } } sb.Remove(sb.Length - 1, 1); sb.Append("]},"); } else //根节点下没有子节点 { sb.Append("]},"); //跟上面if条件之外的字符串拼上 } return sb.ToString(); } }
          
         
        
       
      
     

 

3.MVC调用

public ActionResult GetTree(){    List
     
       comboTrees = new List
      
       ();    var list = new List
       
        ();//获取列表数据    list.ForEach(f => comboTrees.Add(new ComboTree() { id = f.Id, text = f.Name, parentid = f.ParentId }));    string treeString = new ComboTree().GetTreeString(comboTrees);    return Content(treeString);}
       
      
     

 

二、前端运用

HTML

    部门：

 

脚本

function onLoadSuccess(node, data) {        if (data && data.length>0) {            $("#treeParentId").combotree('setValue', data[0].id);        }    }

function onSelect(record) {

　　console.log(record);

　　var id = record.id;

　　var text = record.text;

}

 PS: 当远程数据加载成功时触发onLoadSuccess

ZeroArr为过滤数组，包含相同的id选项不能选中.

function onBeforeSelect(node) {        var isZero = false;        ZeroArr.forEach(function (value, index) {            //console.log(node.id + "======" + ZeroArr[index].Id);            if (node.id === ZeroArr[index].Id) {                isZero = true;                return false;            }        });        if (isZero) {            $.msg_show("提示", "请选择下级节点");            return false;        }    }

 PS: 在请求加载数据之前触发onBeforeLoad，返回 false 则取消加载动作

 

相关说明

combobox和combotree是combo的扩展，相关中文教程：

http://www.jeasyui.net/plugins/168.html  combo 

http://www.jeasyui.net/plugins/169.html  comboBox

http://www.jeasyui.net/plugins/170.html   comboTree