多级下拉菜单 （小山）

-------------------------------------
源代码下载/Files/singlepine/topmenu.rar

public   class  TopMenu : System.Web.UI.Page
{
    protected DataRow[] father;
    protected DataRow[] first;
    protected DataRow[] second;
        private void Page_Load(object sender, System.EventArgs e)
        {
            
        }
    public static string ConnectionString=System.Configuration .ConfigurationSettings .AppSettings["ConnectionString"];
    
        GetDataSet#region GetDataSet
        public static DataSet GetDataSet(string sql)
        {
            SqlDataAdapter    sda =new SqlDataAdapter(sql,ConnectionString);
            DataSet ds=new DataSet();
            sda.Fill(ds);
            return ds;
        }
        #endregion
        Web Form Designer generated code#region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /**//**//**//// 

        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// 

        private void InitializeComponent()
        {    
            this.Load += new System.EventHandler(this.Page_Load);
        }
        #endregion
    LoadTopMenu#region LoadTopMenu
    protected string LoadTopMenu()
    {
        //IsBoot设置菜单级别,0一级,1二级,2三级,依此类推.
        string sqlFather="select * from topmenu order by IsBoot";
        DataSet dsFather=GetDataSet(sqlFather);
        father=dsFather.Tables[0].Select("IsBoot=0","IsBoot");
        string menu="";            
        int one=0;
        int two=1;
        int three=1;
        foreach(DataRow drfather in father)
        {                
            menu+="mpmenu"+one+"=new mMenu("+"'"+drfather["text"]+"'"+",'/','self','','','','');";
            first=dsFather.Tables[0].Select("ParentID='"+Convert.ToInt32(drfather["ID"])+"' and IsBoot=1","IsBoot");
            foreach(DataRow drfirst in first)
            {
                second=dsFather.Tables[0].Select("ParentID='"+Convert.ToInt32(drfirst["ID"])+"' and IsBoot=2","IsBoot");
                if(second.Length==0)
                {
                    menu+="mpmenu"+one+".addItem(new mMenuItem("+"'"+drfirst["text"]+"'";//description
                    menu+=","+"'"+drfirst["url"]+"'"+",";//url
                    menu+="'"+drfirst["target"]+"'"+",";//target
                    menu+=""+drfirst["visible"]+",";//是否可见,false可见,true不可见
                    menu+="'"+drfirst["status"]+"'"+",";//状态条
                    menu+="null,'','','',''));";
                }
                foreach(DataRow drsecond in second)
                {    
                    menu+="msub"+two+"=new mMenuItem("+"'"+drfirst["text"]+"','',"+"'"+drfirst["target"]+"'";
                    menu+=","+drfirst["visible"]+",";//是否可见,false可见,true不可见
                    menu+="'','1','','','','');";

                    menu+="msub"+three+".addsubItem(new mMenuItem("+"'"+drsecond["text"]+"'";//description
                    menu+=","+"'"+drsecond["url"]+"'"+",";//url
                    menu+="'"+drsecond["target"]+"'"+",";//target
                    menu+=""+drsecond["visible"]+",";//是否可见,false可见,true不可见
                    menu+="'"+drsecond["status"]+"'"+",";//状态条
                    menu+="null,'','','',''));";
                    menu+="mpmenu"+one+".addItem(msub"+two+");";//addItem
                    three++;
                }
                two++;
            }
            one++;
        }
        return menu;
    }
    #endregion
}

3.数据库脚本
 

-- 建表
if   exists  ( select   *   from  dbo.sysobjects  where  id  =   object_id (N ' [dbo].[topmenu] ' )  and   OBJECTPROPERTY (id, N ' IsUserTable ' )  =   1 )
drop   table   [ dbo ] . [ topmenu ]
GO

CREATE   TABLE   [ dbo ] . [ topmenu ]  (
     [ ID ]   [ int ]   NOT   NULL  ,
     [ parentId ]   [ int ]   NOT   NULL  ,
     [ text ]   [ nvarchar ]  ( 255 ) COLLATE Chinese_PRC_CI_AS  NULL  ,
     [ url ]   [ nvarchar ]  ( 255 ) COLLATE Chinese_PRC_CI_AS  NULL  ,
     [ target ]   [ nvarchar ]  ( 50 ) COLLATE Chinese_PRC_CI_AS  NULL  ,
     [ IsBoot ]   [ int ]   NULL  ,
     [ visible ]   [ nvarchar ]  ( 50 ) COLLATE Chinese_PRC_CI_AS  NULL  ,
     [ status ]   [ nvarchar ]  ( 50 ) COLLATE Chinese_PRC_CI_AS  NULL  
)  ON   [ PRIMARY ]
GO

-- 插入测试数据
insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 1 , 0 , ' 深圳 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 0 , ' false ' , ' 深圳 ' )

insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 2 , 1 , ' 南山 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 1 , ' false ' , ' 南山 ' )

insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 3 , 1 , ' 福田 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 1 , ' false ' , ' 福田 ' )

insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 4 , 2 , ' 科技园 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 2 , ' false ' , ' 科技园 ' )

insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 5 , 3 , ' 塞格 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 2 , ' false ' , ' 塞格 ' )

insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 6 , 0 , ' 广州 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 0 , ' false ' , ' 广州 ' )

insert   into  topmenu( [ ID ] , [ parentId ] , [ text ] , [ url ] , [ target ] , [ IsBoot ] , [ visible ]  , [ status ] )
values ( 7 , 6 , ' 广州火车站 ' , ' http://singlepine.cnblogs.com/articles/259955.html ' , ' self ' , 1 , ' false ' , ' 广州火车站 ' )