如何使用回发获取dropdownlist值 [英] How to get dropdownlist value with out using postback

问题描述

我有两个下拉列表如下



国家/地区下拉列表1

州下拉列表2



当我点击国家dropdownlsit1时，状态dropdownlist2将显示相应的状态。



表示如何使用autopostback



我尝试过的事情：

i have two dropdownlist as follows

Country dropdownlist1
State dropdownlist2

when i click the country dropdownlsit1, in state dropdownlist2 corresponding state will display.

for that how to do with out using autopostback

What I have tried:

 i have two dropdownlist as follows

  Country      dropdownlist1
  State        dropdownlist2

 when i click the  country dropdownlsit1, in state dropdownlist2 corresponding state will display.

for that how to do with out using autopostback

推荐答案

使用 UpdatePanel

参考这些文章

使用更新面板级联下拉列表 [ ^ ]

使用Asp .Net级联DropDownList [ ^ ]

use UpdatePanel
refer these articles
Cascading dropdown using update panel[^]
Cascading DropDownList with Asp .Net [^]

这篇关于如何使用回发获取dropdownlist值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！