如何通过xml文件填充下拉列表 [英] How to fill dropdown by xml file

问题描述

这是我的xml文件下拉菜单

this is my xml files dropdown

<?xml version="1.0" encoding="utf-8" ?>
<dropdowns>

  <dropdown name="DropDownLoc">
    <menu text="Select" value="-1" />
    <menu text="North" value="1200" />
    <menu text="South" value="1400" />
  </dropdown>

  <dropdown name="DropDownEsp">
    <menu text="Select" value="-1" />
    <menu text="Est" value="7" />
    <menu text="Ovest" value="9" />
  </dropdown>
</dropdowns>

现在这是我的设计页面::

now this is my design page::

<asp:DropDownList ID="DropDownList1" runat="server">
</asp:DropDownList>
<asp:XmlDataSource ID="XmlDataSource1" runat="server" datafile=&

</asp:XmlDataSource>

及以下是代码背后的代码

and below is code behind code

string path = Server.MapPath("~/XMLFile3.xml");
string whichDropDown = "DropDownEsp";
var query =
from dropDown in XDocument.Load(path).Descendants("dropdown")
where dropDown.Attribute("name").Value == whichDropDown

from name in dropDown.Descendants("name")
let text = name.Attribute("text").value
let value = name.Attribute("value").value

select new ListItem(text, value);

// Now we data bind the query result to the control
DropDownList1.DataSource = query;
DropDownList1.DataBind();

推荐答案

基本上您缺少DataValueField和DataTextField以获取更多详细信息，请参阅DropDownList Properties

绑定下拉菜单

尝试类似的东西

Basically You are missing DataValueField and DataTextField for more details see DropDownList Properties
To Bind a Dropdown
try Something Like that

DropDownList1.DataValueField = "value";
DropDownList1.DataTextField = "text";
DropDownList1.DataSource = query;
DropDownList1.DataBind();

这篇关于如何通过xml文件填充下拉列表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！