使用AJAXPRO实现级联菜单,并获取下拉框的值

获取级联后值的方法是在   下拉框后面加一个TEXTBOX存贮他的值,要用的时候直接取他的值便可 还有就是在前台页码的PAGES中加入enableEventValidation="false".
HTML代码:
           <tr class="tc">
       <td class="tc">申&nbsp;請&nbsp;人：</td>
       <td style="WIDTH: 284px">
                                &nbsp;<asp:DropDownList ID="ddldept" runat="server">
                                </asp:DropDownList>&nbsp;
                              <%--  onchange="checkRePeo(this);"--%>
                                <asp:dropdownlist id="ddlRePeo" Runat="server"  onchange="change1(this)"></asp:dropdownlist>
                                <asp:TextBox ID="left1" runat="server" Width="0px"></asp:TextBox>
                                </td>
       <td class="tc">代&nbsp;理&nbsp;人：</td>
       <td><asp:dropdownlist id="ddlActPeo" Runat="server" onchange="change2(this)"></asp:dropdownlist>
       <asp:TextBox ID="right2" runat="server" Width="0px"></asp:TextBox>
       </td>
      </tr> 
JS代码:
     <script>   
   var uid = "<%=uid%>";
   var fno = "<%=fno%>";
   var sno = "<%=sno%>";
   itemEditPage = "Form.iedit.aspx";
   hs_width = "700";
   hs_height = "400";
   var timeunit = 0;
   var holiType = 0;
   var YearMax = "";
   var MinUnit = "";
   var MaxDays = 0;
   var IsFile = 0;
   var HoliName = "";
   var Cat1 = "";
   var Car2 = "";
   var Cat3 = "";
   var Cat4 = "";
   var RePeo = "";
   
         function change1(obj)
               {    
                    document.getElementById("left1").value = obj.options[obj.selectedIndex].value;    
               }
               function change2(obj)
               {    
                    document.getElementById("right2").value = obj.options[obj.selectedIndex].value;   
               }
             
    function getBid(s){
                return document.getElementById(s);
                }
      function getBmc(s){
                return document.getElementByName(s);
                }
          function showNext(sid,obj,obj2)
                {
                    if(sid==null || sid=="" || sid.length<1)return;
                    var slt =getBid(obj);
                    var slt2=getBid(obj2);
                 var v = SC.Modules.EForm_holi.Form.getNextClass(sid).value;
                 if (v != null){     
                 if(v != null && typeof(v) == "object" && v.Tables != null)
     {  
         slt.length = 0;
         slt2.length=0;
         slt.options.add(new Option("請選擇",0)); 
         slt2.options.add(new Option("請選擇",0)); 
      for(var i=0; i<v.Tables[0].Rows.length; i++)
               {
                 var EmpNo =v.Tables[0].Rows[i].EmpNo;   
                    var EmpName = v.Tables[0].Rows[i].EmpName;
                 slt.options.add(new Option(EmpName,EmpNo));
                 slt2.options.add(new Option(EmpName,EmpNo));
              }
     }
     } 
     return;
        }
  </script>

后台代码:

     [AjaxPro.AjaxMethod()]
        public DataSet getNextClass(string cid)
        {
            string sql = "select EmpNo, (EmpNo + '/' + CName ) as EmpName from HREmpM where deptNo = '"+cid+"'";
            try
            {
                DataSet ds = MySqlBase.GetVarsAsDataSet(sql);
                return ds;
            }
            catch
            {
                //throw;
                return null;
            }
        }