从下拉列表中获取所选项目的值 [英] get the value of the selected item form a dropdownlist

问题描述

如何在下拉列表中实际获取所选项目的值.该下拉列表位于griw视图的项目模板中.
以下代码确实获取了值，但始终是下拉列表中的第一项:

 受保护的  void 视图文件(对象发​​件人，GridViewCommandEventArgs e)
   {
 如果(例如CommandName == " 跨度>)
        {
            如果(Page.IsPostBack)
            {
                 int 索引= Convert.ToInt32(e.CommandArgument);
                GridViewRow row = gvunclassified.Rows [Index];

                DropDownList Offices = row.FindControl(" ) as  DropDownList;
                字符串 deparmentname =(办公室是 DropDownList)吗? Offices.SelectedValue:空；

                
            }


        } 

谢谢

解决方案

尝试在gridview中设置autopostback = true

我也遇到了同样的问题.
然后我在页面中放置了一个隐藏字段，并更改了组合框obchnage事件的java脚本中的值

How to we actually get the value of the selected item in a dropdownlist.The dropdownlist is in an item template of a griw view.
The following code does gets the value but its always theh first item in the dropdownlist:

protected void viewfiles(object sender, GridViewCommandEventArgs e)
   {
 if (e.CommandName == "savefiles")
        {
            if (Page.IsPostBack)
            {
                int Index = Convert.ToInt32(e.CommandArgument);
                GridViewRow row = gvunclassified.Rows[Index];

                DropDownList Offices = row.FindControl("DDept") as DropDownList;
                String deparmentname = (Offices is DropDownList) ? Offices.SelectedValue : null;

                
            }


        }

thanks

解决方案

Try setting autopostback = true in gridview

I had also same problem.
then i have put a hidden field in the page and change the value in java script of obchnage event of combo box

这篇关于从下拉列表中获取所选项目的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！