C＃将XML加载到组合框

Question

我是C＃的新手，正在尝试将xml结构中的数据从xml加载到带有文本和值的组合框项目

<?xml version="1.0" encoding="UTF-8"?>
<roomsgg id="1">
  <rooms id="1">
    <roomtype id="1" name="standard">
      <roomtimeprice id="5">
        <rtid>5</rtid>
      </roomtimeprice>
      <roomtimeprice id="6">
        <rtid>6</rtid>
      </roomtimeprice>
    </roomtype>
    <roomtype id="2" name="sweet">
      <roomtimeprice id="7">
        <rtid>7</rtid>
      </roomtimeprice>
      <roomtimeprice id="8">
        <rtid>8</rtid>
      </roomtimeprice>
      <roomtimeprice id="9">
        <rtid>9</rtid>
      </roomtimeprice>
    </roomtype>
    <roomtype id="3" name="gfgfgfgfgfgf">
      <roomtimeprice id="10">
        <rtid>10</rtid>
      </roomtimeprice>
      <roomtimeprice id="11">
        <rtid>11</rtid>
      </roomtimeprice>
      <roomtimeprice id="12">
        <rtid>12</rtid>
      </roomtimeprice>
    </roomtype>
  </rooms>
</roomsgg>

我想用房型文本填充组合框并将ID设置为项目的值

public class ComboboxItem
{
    public string Text { get; set; }
    public string Value { get; set; }


    public override string ToString()
    {
        return Text;
    }
}
public frmChangeRoom(string hotel_id2)
{
    InitializeComponent();
    hotel_id3 = hotel_id2;
    fillCombo();
}

//view data select type rooms 
void fillCombo()
{
    string mvalue = "1";

    XDocument readrooms = XDocument.Load("http://www.website.com/api/api.php?action=getrooms&hotel_id=" + hotel_id3);
    var mnodes = (from z in readrooms.Descendants("rooms").Where(e => e.Parent.Attribute("id").Value == mvalue)
                  select new
                  {
                      roomtypemainid = (string)z.Element("roomtype").Attribute("id").Value,
                      roomtypemainname = (string)z.Element("roomtype").Attribute("name").Value

                  }).ToList();
    foreach (var z in mnodes)
    {
        ComboboxItem itemz = new ComboboxItem();
        itemz.Text = z.roomtypemainname;
        itemz.Value = z.roomtypemainid;
        sel_typeRoom.Items.Add(itemz);
    }

问题是只有第一个想要的元素出现了，这是任何想法的标准吗？

解决了 ：

 XDocument readrooms = XDocument.Load("http://www.website.com/api/api.php?action=getrooms&hotel_id=" + hotel_id3);
            readrooms.Descendants("roomtype").Select(p => new
            {
                roomtypename = p.Attribute("name").Value,
                roomtypeid = p.Attribute("id").Value
            }).ToList().ForEach(p =>
            {
                ComboboxItem itemz = new ComboboxItem();
                itemz.Text = p.roomtypename;
                itemz.Value = p.roomtypeid;
                sel_typeRoom.Items.Add(itemz);

            });

Answer 1

问题是您选择的元素只有一个： "rooms" 。 后代方法不会返回您给定的元素的后代列表，而是返回该类型的后代元素列表。

像这样更改您的链接：（ 请参见select已创建您的自定义类型 ）

XDocument readrooms = XDocument.Load("http://www.wiseuo.com/api/api.php?action=getrooms&hotel_id=" + hotel_id3);
var mnodes = (from x in readrooms.Descendants("roomsgg")
              where x.Attribute("Id").Value == mvalue
              from z in x.Descendants("roomtype")
              select new ComboboxItem 
              {
                  Value = (string)z.Attribute("id").Value,
                  Text = (string)z.Attribute("name").Value
              }).ToList();

通过在parent元素上添加选择以检查id ，然后获取其下的所有项，就像在方法语法中使用SelectMany方法一样