无刷新二级Dropdownlist问题

Question

怎样取第二个dropdownlist的值呢
mydown2.SelectedItem.Value没有取得他的值.
用Request.Form["mydown2"].ToString()也没有,请问该怎样取得第二的dropdownlist的值呢?

Answer 1

可以取到呀
private void Button1_Click(object sender, System.EventArgs e) 
{ 
Response.Write(Request.Form["DropDownList1"].ToString()+"<br>"+Request.Form["DropDownList2"].ToString()); 
} 或者在前台把它放到hidden里
function getData()
{
                    var province=document.getElementById("DropDownList1");
                    var pindex = province.selectedIndex;
                    var pValue = province.options[pindex].value;
                    var pText  = province.options[pindex].text;
                    
                    var city=document.getElementById("DropDownList2");
                    var cindex = city.selectedIndex;
                    var cValue = city.options[cindex].value;
                    var cText  = city.options[cindex].text;                    
                  
                    document.Form1.hidprovince.value=pValue;
                    document.Form1.hidcity.value=cValue;
}<INPUT style="Z-INDEX: 106; LEFT: 8px; WIDTH: 160px; POSITION: absolute; TOP: 176px; HEIGHT: 22px" type="hidden" size="21" id="hidprovince" runat="server"><INPUT style="Z-INDEX: 107; LEFT: 184px; POSITION: absolute; TOP: 176px" type="hidden"
  id="hidcity" runat="server">string sql="insert into testgrid (province,city) ";
sql+="values('"+this.hidprovince.Value+"','"+this.hidcity.Value+"')";
Response.Write(sql);参考
http://singlepine.cnblogs.com/articles/265678.html