下拉列表的Onselected索引已更改 [英] Onselectedindex changed.of Dropdownlist

问题描述

我有abc.aspx页面.
在同一页面中，我放置了iframe以在提交按钮单击时显示结果..在abc.aspx页面中，有两个下拉列表DDL1和DDL2 ..

在DDL1下拉列表中，我已从数据库中填充了国家/地区，对于所选国家/地区，我必须在DDL2中填充其状态....
但是当我将DDL1使用selectedindexedchanged事件..然后它会自动回发，并且iframe在同一abc.aspx中重复两次..

所以我必须避免...我的目标是在DDL1中填充国家/地区，然后在DDL2中填充该国家/地区的状态..并且单击提交按钮时，我必须在iframe页面中显示相对于所选国家/地区和国家/地区的结果(数据) ...

在Advanced中感谢

Hi,

I have abc.aspx page.
And in the same page i have put iframe for showing result on submit button click.. in abc.aspx page there are two dropdownlist DDL1 and DDL2..

In DDL1 dropdownlist i have populated countries from database and with respect to selected country i have to populated its state in DDL2....
but when i use selectedindexedchanged event for DDL1..then it autopostback and iframe is repeated twice ..in the same abc.aspx.

so i have to avoid it ...my target is populate country in DDL1 and onchange of that country populate state in DDL2..and onclick of submit button i have to show result(data) in iframe page with respect to selected country and state...

Thanks in Advanced

推荐答案

请参阅本教程

http://www.tamilcodes.com/document.aspx?content=Tutorials&id=36 [^ ]

See this tutorial

http://www.tamilcodes.com/document.aspx?content=Tutorials&id=36[^]

查看此链接

http://www.dotnetexpertsforum. com/how-to-to-change-the-data-in-dropdownlist-based-up-on-selection-t1903.html [

check out this link

http://www.dotnetexpertsforum.com/how-to-change-the-data-in-dropdownlist-based-up-on-selection-t1903.html[^]

将您的下拉列表放在更新面板中，这是避免刷新页面的最佳方法

place your dropdownlist in update panel this is best way to avoid refresh the page

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