Question

我在尝试从具有2个不同后代的xml文件中提取数据时遇到了一些问题。

<?xml version="1.0" encoding="utf-8" standalone="yes"?>
<Male>
    <Person id="1" Name="Joe" Age="35" />
            ......  Some more data
    <Person id="6" Name="Hank" Age="55" />
</Male>

<Female>
    <Person id="4" Name="Jane" Age="28" />
    ......  Some more data
    <Person id="9" Name="Jude" Age="32" />
</Female>

所以我想只提取后代女性，所以这是我的代码。

private int personId;
private string personName;
private int personAge

private async void GetPersonDetails()
{
    try
        {
         string personDetail = "http://localhost/people/directory.xml";
         HttpClient httpClient = new HttpClient();
         HttpRequestMessage requestMessage = new HttpRequestMessage(HttpMethod.Get, personDetail 

        // Send the request to the server
        HttpResponseMessage response2 = await httpClient.SendAsync(requestMessage);

        // Just as an example I'm turning the response into a string here
        string responseAsString = await response2.Content.ReadAsStringAsync();

        System.Xml.Linq.XDocument _xdoc = System.Xml.Linq.XDocument.Parse(responseAsString);

var peopleData = from person in _xdoc.Descendants("Female")
    select new 
    {
         id = person.Attribute("id").Value,
         name = person.Attribute("Name").Value,
         age = person.Attribute("Age").Value      
     };

int peopleIdx = 0;
foreach (var pDetails in peopleData)
{
     personId = pDetails.id;
     personName = pDetails.name;
     personAge = pDetails.age;
     peopleIdx++; 
 }


        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message.ToString());
        }

    }

它还会提取男性细节。我怎样才能从女性后代那里获得所有数据？基本上，用户可以搜索男性或女性以获得结果。

Answer 1

您需要选择名为Person的元素，这些元素是Female的子元素。您可以使用Enumerable.SelectMany()获取Female元素的子元素，然后处理其数据：

var people = _xdoc.Descendants("Female")
    .SelectMany(e => e.Descendants("Person"))
    .Select(e => new
    {
        Id = e.Attribute("id").Value,
        Name = e.Attribute("Name").Value,
        Age = e.Attribute("Age").Value
    });

LINQ从2个不同的XML后代中选择特定数据

1 个答案: