回发后，下拉列表会重置。 [英] Dropdownlist gets reset after postback.

问题描述

亲爱的所有人，



我使用js函数在dropdownlist中添加项目。所有项目都完美添加但是当我想在DB中添加选定的值时，点击按钮后，下拉列表会在回发时重置。



我该如何阻止这个。



请帮助。

寻找有价值的解决方案/建议你的，

提前谢谢

Supriya

Dear All,

I am using js function to add items in dropdownlist.All items are added perfectly but when I want to add selected value from that in DB,On clicking button the dropdownlist gets reset on postback.

How can I stop this.

Please help.
looking for valuable solutions/suggestion of yours,
Thanks in advance
Supriya

推荐答案

if(!Page.IsPostBack)
{
//bind your dropdown here
}

尝试这些链接



http://www.aspsnippets.com/Articles/Populate-Bind-DropDownList-using-JavaScript-and-ASP.Net-AJAX.aspx [ ^ ]





http://www.asp.net/ajaxlibrary/ AjaxControlToolkitSampleSite / CascadingDropDown / CascadingDropDown.aspx [ ^ ]

try these links

http://www.aspsnippets.com/Articles/Populate-Bind-DropDownList-using-JavaScript-and-ASP.Net-AJAX.aspx[^]


http://www.asp.net/ajaxlibrary/AjaxControlToolkitSampleSite/CascadingDropDown/CascadingDropDown.aspx[^]

这将解决您的问题。



http://forums.asp.net/t/1275211.aspx [ ^ ]

This will resolve your problem.

http://forums.asp.net/t/1275211.aspx[^]

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