如果有人在下拉列表中选择了某个项目，如何禁用下拉列表？ [英] How to disable a Dropdownlist once someone has selected an item in the Dropdownlist?

问题描述

如果有人在下拉列表中选择了某个项目，如何禁用下拉列表？

How to disable a Dropdownlist once someone has selected an item in the Dropdownlist?

推荐答案

您是否尝试过使用j-query？

have u tried it using j-query?

On DropDownChange事件确实

Dropdownlist1.Enable = false;

并设置Autopostbackvalue = true;

On DropDownChange Event do
Dropdownlist1.Enable=false;
and set Autopostbackvalue=true;

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
   {
       DropDownList1.Enabled = false;
   }

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