我需要这个问题的答案 [英] i need some answers for this question

问题描述

我有3个下拉列表，第一个下拉列表是在选定的国家/地区，例如印度.然后第二个下拉列表是在选择州，第三个下拉列表是在选择区域na并显示相关的i 下拉列表中的信息.

i have three dropdownlist.first one dropdownlist am selected country for example india.and then second dropdown list am selecting state and third dropdownlist am i selecting district na showing relevant information in dropdownlist.

推荐答案

如果您正在讨论级联下拉列表，请检查这些

在级联下拉列表中动态选择值 [ ^ ]
如何使用另一个ddl填充下拉列表 [ ^ ]
层叠下拉菜单-国家/地区 [ ^ ]

ASP.NET级联下拉列表(CSASPNETCascadingDropDownList) [ CascadingDropDown演示 [在ASP.NET MVC中级联DropDownList [在ASP.Net中创建级联DropDownList [将CascadingDropDown与数据库一起使用 [

If you are talking about cascading dropdownlist then check these

Selecting value in cascading dropdown list dynamically[^]
How to populate a dropdown list with another ddl[^]
Cascading DropDown - Country to state[^]

ASP.NET cascading drop-down-list (CSASPNETCascadingDropDownList)[^]
CascadingDropDown Demonstration[^]
Cascading DropDownList in ASP.NET MVC[^]
Creating Cascading DropDownLists in ASP.Net[^]
Using CascadingDropDown with a Database[^]

<div class="fields">
                           <asp:DropDownList ID="ddreligion" runat="server" AutoPostBack="false" Width="150px">
                           </asp:DropDownList>
                       </div>
                       <div class="labels">
                           Caste
                       </div>
                       <div class="fields">

                               <asp:DropDownList ID="ddCast" runat="server">
                               </asp:DropDownList>


                       </div>

页面加载事件中的ddreligion loadin

使用jquery ajax调用我加载了第二个下拉列表

ddreligion loadin on page load event

using jquery ajax call i load cast second drop down list

('#<％ = ddreligion.ClientID

('#<%=ddreligion.ClientID%>').change(function () {

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