DropdownList SelectedIndex不起作用 [英] DropdownList SelectedIndex Not Working

问题描述

你好，


我已经使用了两个dropdownlist，其中我想将第一个dropdownlist的selectedindexchanged的值转换为第二个dropdownlist.但是问题是，aspx页面上没有selectedindexchanged事件.

hello,


I have used two dropdownlist,in which i want to get value on selectedindexchanged of first dropdownlist into second dropdownlist.but the problem is selectedindexchanged event is not coming on aspx page.

how to solve this problem???

推荐答案

Hi,

     You have to add this event in source like  <asp:dropdownlist id="DropDownList1" runat="server" onselectedindexchanged="DropDownList1_SelectedIndexChanged" xmlns:asp="#unknown">
        </asp:dropdownlist>

otherwise you can find in properties window. There will be yellow icon. If you choose that you can see this event in Action node. Just Click that.

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