下拉列表第一项始终被选中 [英] dropdown list first item is always selected

问题描述

大家好，



我根据另一个ddl（1）的选择索引从sql填充ddl（2）。



问题是当我按动作按钮时，无论我手动选择什么，第一个ddl（2）的值总是被选中。

Hi all,

I populate a ddl(2) from sql based upon the selecteted index of another ddl(1).

The problem is that when i press the action button first value of ddl(2) is always what is selected no matter what I have manually selected.

<asp:DropDownList ID="ddlToSection" runat="server" CssClass="ddlLong" OnSelectedIndexChanged="ddlToSection_SelectedIndexChanged" AutoPostBack="false">

请建议

谢谢

pls suggest
thanks

推荐答案

似乎没有回发为AutoPostBack =false。

本教程的演练在ASP.Net中创建级联DropDownLists [ ^ ]

It seems that it did not postback as the AutoPostBack="false".
Walkthrough this tutorial Creating Cascading DropDownLists in ASP.Net[^]

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