列表框控件属性 [英] ListBox Control Properties

问题描述

嗨
我只想在列表框中选择两个值，但通过多次选择没有选择的限制.

Hi
I want to select only two value in listbox but by multiple selection there is no limit of selection.

推荐答案

您可以在onchange事件中编写javascript可以计算元素在选择了2个元素之后选择了哪个，您可以禁用该列表框
这对您有帮助
http://stackoverflow.com/questions/1380148/等效于onselect-javascript-hook-in-multi-select-asp-listbox [

You can write javascript in that onchange event You can count the elements which selected after 2 elements selected you can disable that listbox
this will help you
http://stackoverflow.com/questions/1380148/equivalent-of-onselect-javascript-hook-in-multi-select-asp-listbox[^]

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