使用Ext的树形控件来加载部门信息

 string departmentid = "";
    string urlPage = "";
    string paramname = "id";
    string target = "";
    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.Params["urlPage"] != null)
        { 
            urlPage=Request.Params["urlPage"].ToString();
        }
        if (Request.Params["paramname"] != null)
        {
            paramname = Request.Params["paramname"].ToString();
        }
        if (Request.Params["target"] != null)
        {
            target = Request.Params["target"].ToString();
        }
        if (Request.Params["departmentid"] != null)
        {
            departmentid = Request.Params["departmentid"].ToString();
        }
        Response.Write(GetNodeString("","")+"]");
    }

    private string GetNodeString(string departmentid,string json)
    {
      
        DepartmentList dl = DepartmentList.GetDepartmentList(departmentid, CommonStatusFlag.正常);
        if (json == "")
        {
            json = "[";
        }
        foreach (DepartmentInfo di in dl)
        {
            if(json.Substring(json.Length - 1, 1) == "[")
            {
                json += "{text:'" + di.Name + "',qtip:'" + di.Name + "',href:'"+ urlPage + "?" + paramname + "="+  di.ID +"',hrefTarget:'"+target+"'";
            }
            else 
            {
                json += ",{text:'" + di.Name + "',qtip:'" + di.Name + "',href:'" + urlPage + "?" + paramname + "=" + di.ID + "',hrefTarget:'" + target + "'";
            }          
   
            if (HaveChild(di.ID))
            { 
                json += ",children:[";
                json=  GetNodeString(di.ID, json) + "]";
                json += "}";
            }
            else
            {
                json +=",leaf:true}";
            }           
        }

        return json;
    }
    private bool HaveChild(string departmentid)
    {
        DepartmentList dl = DepartmentList.GetDepartmentList(departmentid, CommonStatusFlag.正常);
        if (dl.Count > 0)
        {
            return true;
        }
        return false;
    }

 

调用页面代码

 

    <link type="text/css" rel="stylesheet" href="../ext/resources/css/ext-all.css" />   
    <script language="javascript" type="text/javascript" src="../ext/adapter/ext/ext-base.js"></script>
    <script language="javascript" type="text/javascript" src="../ext/ext-all.js"></script>
    <script language="javascript" type="text/javascript" src="../ext/src/locale/ext-lang-zh_CN.js" ></script>    
    <script language="javascript" type="text/javascript">
                Ext.onReady(function(){
                        var urlPage="DepartmentView.aspx"; //点击跳转的页面
                          var paramname="id"
                        var target="";
                        
                     var tree=new Ext.tree.TreePanel({
                                el:'tree',
                                loader:new Ext.tree.TreeLoader({dataUrl:'GetData.aspx?urlPage='+ urlPage + '&paramname='+paramname +'&target='+target })
                            });
                        var root=new Ext.tree.AsyncTreeNode({
                                id:'0',                    
                                text:'部门管理'
                            });
                        
                        tree.setRootNode(root);
                        tree.render();
                        
                        root.expand(true,false);

                    });        
            </script>