asp.net MVC2 初探十四

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Web.Mvc; 
using Spring.Context; 
using Spring.Context.Support; 
 
namespace Dao 
{ 
         public  class Common 
        { 
                 public  delegate List<dynamic> ItemList( string hql); 
 
                 /// <summary> 
                 ///    获取下拉列表的项 
                 /// </summary> 
                 /// <param name="hql">传递的hql语句</param> 
                 /// <param name="dataValueField">下拉列表Value值</param> 
                 /// <param name="dataTextField">下拉列表文本值</param> 
                 /// <param name="optionLabel">下拉列表默认值</param> 
                 /// <param name="GetItemlist">委托返回list泛型</param> 
                 /// <returns>下拉列表项</returns> 
                 public SelectList GetListItem( string hql,  string dataValueField,  string dataTextField,  string optionLabel, ItemList GetItemlist) 
                { 
                        IEnumerable<dynamic> iEnumerable = GetItemlist(hql).AsEnumerable(); 
                        SelectList selectList =  new SelectList(iEnumerable, dataValueField, dataTextField, optionLabel); 
                         return selectList; 
                } 
 
                 /// <summary> 
                 /// 根据Id获取spring容器加载的对象 
                 /// </summary> 
                 /// <param name="objId">对象映射Id</param> 
                 /// <returns></returns> 
                 public  object GetClass( string objId) 
                { 
                        IApplicationContext context = ContextRegistry.GetContext(); 
                         return context.GetObject(objId); 
                } 
        } 
} 

 SS_CodeDao sc = common.GetClass( "CodeDao")  as SS_CodeDao; 
                                SelectList list = common.GetListItem( " from SS_CODE",  "C_DATA",  "C_ENAME",  "---选择---", sc.Select);